Models 575B & 578B

Source Locking CW Microwave

Frequency Counters

Operation Manual

575B CCN 1419/1822

578B CCN 1518/2021

Manual Assy Part Number 5585047-07

Manual Text Part Number 5580056 -07
Printed in USA
 575B/578B

Warranty
Phase Matrix, Inc. warrants this product to be free from defects in material and workmanship for
one year from the date of delivery. Damage due to accident, abuse, or improper signal level is not
covered by the warranty. Removal, defacement, or alteration of any serial or inspection label,
marking or seal may void the warranty. Phase Matrix, Inc. will repair or replace, at its option, any
components of this product which prove to be defective during the warranty period, provided the
entire unit is returned COLLECT to Phase Matrix, Inc. or an authorized repair facility. Please visit
our web site at: www.phasematrix.com for up-to-date return information. In warranty units will be
returned freight prepaid; out of warranty units will be returned freight COLLECT. No other
warranty other than above is expressed or implied.

Certification
Phase Matrix, Inc. certifies this instrument to be in conformance with the specifications noted herein at
time of shipment from the factory. Phase Matrix, Inc. further certifies that its calibration measurements
are traceable to the National Institute of Standards and Technology (NIST).

Manual Change Information

As Phase Matrix, Inc. continually improves and updates its products, changes to the material covered by
the manual will occur. When a part or assembly in a Phase Matrix, Inc. instrument is change to the
extent that it is no longer interchangeable with the earlier part, the configuration control number (CCN)
of the instrument, shown on the title page of the manual, will change, and a new edition of the manual
will be published.

To maintain the technical accuracy of the manual, it may be necessary to provide new or additional
information with the manual. In these cases, the manual is shipped with a Manual update. Please be
sure to incorporate the information as instructed in the Manual update.

iii
 575B/578B

SAFETY
The Phase Matrix, Inc. Models 575B & 578B are designed and tested according to international
safety requirements, but as with all electronic equipment, certain precautions must be observed. This
manual contains information, cautions, and warnings that must be followed to prevent the
possibility of personal injury and/or damage to the instrument.

SAFETY AND HAZARD SYMBOLS

WARNING
A WARNING denotes a hazard to personnel. It calls attention to a
procedure or practice, which, if not correctly performed or adhered
to, could result in personal injury.

CAUTION
A CAUTION denotes a hazard to the equipment. It calls attention to
an operating procedure or practice, which, if not correctly performed
or adhered to, could result in damage to or destruction of part or all
of the product.

This is a general warning that appears whenever care is necessary to

prevent damage to the equipment.

Dangerous Voltage

Toxic Substance

Static-Sensitive Component

Fire Hazard

iv
 575B/578B

OVERALL SAFETY CONSIDERATIONS

WARNING
Before this instrument is switched on, it’s protective earth terminals
must be connected to the AC power cord’s protective conductor. The
main plug must only be inserted in a socket/outlet that has a
protective earth contact. The protective action must not be negated
by using an extension cord (power cable) or adapter that does not
have a protective earth (grounding) conductor.

WARNING
Use only fuses of the type specified with the required current and
voltage ratings. Never use repaired fuses or short-circuited
fuse holders, as doing so causes shock and/or fire hazard.

WARNING
Whenever it is likely that electrical protection is impaired, the
instrument must be made inoperative and be secured against any
unintended operation.

WARNING
All protective earth terminals, extension cords, autotransformers,
and other devices connected to this instrument must be connected
to a socket/outlet that has a protective earth contact. Any
interruption of the protection causes a potential shock hazard that
can result in personal injury.

WARNING
The power supply is energized whenever AC power is connected to
this instrument. Disconnect the AC power cord before removing the
covers to prevent electrical shock. Internal adjustments or servicing
that must be done with the AC power cord connected must be
performed only by qualified personnel.

v
 575B/578B

WARNING
Since the power supply filter capacitors may remain charged after
the AC power cord is disconnected from the equipment,
disconnecting the power cord does not ensure that there is no
electrical shock hazard.

WARNING
Some of the components used in this instrument contain resins and
other chemicals that give off toxic fumes if burned. Be sure to
dispose of these items properly.

WARNING
Beryllia (beryllium oxide) is used in the construction of the YTF
assembly. This material, if handled incorrectly, can pose a health
hazard. NEVER disassemble the microwave counter assembly.

CAUTION
Static sensitive components are used in the YTF Assembly. These
components can be damaged if handled incorrectly.

CAUTION
Before connecting power to the instrument, ensure that the correct
fuse is installed and the voltage-selection switch on the instrument’s
rear panel is set properly. Refer to INSTALLATION Section 2,
Installation.

CAUTION
Excessive signal levels can damage this instrument. To prevent
damage, do not exceed the specified damage level. Refer to the
instrument specifications in Section 1 of this manual.

vi
 TABLE OF CONTENTS

TABLE OF CONTENTS
Warranty . . iii
Certification . · .. iii
Manual Change Information · .. iii
Customer Suggestion Form · .. iii
Safety . . iv

SECTION 1
GENERAL INFORMATION

Description . . . . . . . . 1--1
Specifications . . . . . . . 1--2
Options And Accessories 1--8
Declaration of Conformity. . 1--9

SECTION 2
INSTALLATION
Unpacking and Initial Inspection . . 2--1
Storage . 2--1
Operating Conditions 2--1
Ventilation . . . . . . . . . . 2--1
Installation . . . . . . 2--2
Preparation For Use . 2--2
Voltage Selection 2--2
Fuse Replacement 2--2
Incoming Operational Checkout 2--3
Service Information . . . . . 2--4
Periodic Maintenance 2--4
Counter Identification 2--4
Factory Service . . . . 2--4
Shipping Instructions 2--4
SECTION 3
OPERATION
Introduction . 3--1
Front Panel Controls, Connectors, And Indicators 3--1
Status Display . . . . . 3--2
Signal Input . 3--3
Rear Panel Controls And Connectors 3--4
Instrument Default Settings . . . . . . . 3--4

vii
 575B/578B
...............................................................................................................................................................................................................................................................................................................................................

TABLE OF CONTENTS (Continued)

SECTION 3
OPERATION (Continued)
Keyboard . 3,5
Reset/Local . . . . . . 3,5
Units (MHz/GHz) .. 3,5
Clear Data/Clear Display .. 3,5
Counter Control Functions . . . . . 3,6
Band Selection . 3,6
Resolution/Gate Time Selection 3,6
0.1 Hz Resolution . . . . . . 3,7
Frequency Limits . . . . . . . . . 3,8
To Input Frequency Limits . . . 3,8
To Display Stored Limits . . 3,8
To Clear Frequency Limits . . . 3,9
Data Manipulation Functions .. 3,9
Frequency Offset . . . . . . . 3,9
To Input Frequency Offsets . 3,9
To Display Stored Offset . . 3,10
To Clear Frequency Offsets . 3,10
Multiply Function . . 3,10
To Enter Multiplier . . . . . 3,10
To Display Multiplier . . . . . . . . . . . . 3,11
To Clear Multiplier . 3,11
mX±B . 3,11
Source Locking Functions . . . . . . . . 3,11
Phase Lock Frequency . . . . . . . . 3,11
To Enter Phase Lock Frequency . . 3,12
To Display Phase Lock Frequency . . . . . . . . . 3,12
To Clear Phase Lock Frequency . . . . . . . . . . . . . . . . . . . . . . 3,12
Phase Lock . 3,13
Bandwidth . 3,13
To Display Stored Bandwidth . 3,14
Store . 3,14
Recall . 3,14
To Display a Stored Phase Lock Frequency . . . . . . . . . . . . . . . . 3,15
To Phase Lock to a Stored Phase Lock Frequency . . . . . . 3,15
To Clear a Stored Phase Lock Frequency . 3,15
DAC . 3,15

viii
 TABLE OF CONTENTS

TABLE OF CONTENTS (Continued)

SECTION 3
OPERATION (Continued)
Description . . . . . . 3.. 15
Keyboard Operation ...... 3.. 16
Power Meter . . . . . . . 3.. 16
Description . . . . . . 3.. 16
Keyboard Operation . 3.. 16
Test Selections . . . . 3.. 17
Power.. on Tests . . . . · .... 3.. 17
Test Functions . . . . · ..... 3.. 17
Test 01 -... 200 MHz Self.. Test. · ..... 3.. 17
Test 02 -... Light Display Segments Test · ..... 3.. 18
Test 03 -... Scan Display Segments Test · ..... 3.. 18
Test 04 -... Scan Display Digits Test . ...... 3.. 18
Test 05 - Keyboard Test . · .... 3.. 18
Test 06 - Converter Ramp Test . · ..... 3.. 19
Test 07 -... Sweep veo Test . 3.. 19
Test 08 -... Power Meter Offset Test . 3.. 19
Test 09 -... Power Meter Gain Test . . 3.. 19
Test 10 - . . Memory Read/Alter Routine 3.. 20
Test 90 -... Display and/or Alter GPIB Address ..... 3.. 20
Test 91 - . . YIG DAC Automatic Calibration 3.. 20
To Exit Tests . 3.. 20
Mutually Exclusive Functions . . . . . . . . 3.. 21
Signal Measurements with the 575B/578B . · .... 3.. 21
Automatic Frequency Measurements . . 3.. 21
Multiple Signal Measurements . . . 3.. 21
Source Locking . . . . . . . . . . . . . . 3.. 22
Options . 3.. 23
Millimeter wave Measurements . · .... 3.. 23
Operation . . . . . 3.. 24
Error Messages . . . 3.. 24
Operator Errors. . 3.. 24
Counter Errors . . 3.. 24

ix
 575B/578B
...................................................................................................................................................................................................................................................................................................................................................

TABLE OF CONTENTS (Continued)

SECTION 4
PROGRAMMING

GPIB Functions Implemented . . 4,1

Remote/Local Function . 4,1
Device Clear Function .. 4,2
Device Trigger Function. 4,2
GPIB Address Selection . 4,2
Talk Only Modes . 4,2
GPIB Instruction Format . 4,3
Formal Definition Of Instructions 4,4
Program Code Set 4,4
Display .. 4,4
Band . . . . . 4,4
Resolution .. 4,4
Measurement Functions 4,5
Data Manipulation Functions . . 4,5
Power Meter . . . . . . . . . 4,5
Frequency Limits . . . . . . . 4,5
Source Locking Functions .. 4,5
Self,Test Function 4,6
Data Format . . . 4,6
Data Output . . . 4,6
Service Request 4,6
DAC Option . . . 4,6
Description Of Available Commands . . 4,6
Display .. 4,6
Band . 4,6
Resolution . 4,7
Measurement Functions . . . 4,7
Data Manipulation Functions .. 4,7
Power Meter . . . . . 4,7
Frequency Limits . . . . . . . 4,8
Self,Test Functions . . . . . 4,8
Source Locking Functions . . 4,8
Data Format 4,9
Data Output . . . 4,9
DAC Option . 4,9
Service Request . 4,9

x
 TABLE OF CONTENTS

TABLE OF CONTENTS (Continued)

SECTION 4
PROGRAMMING (Continued)
Service Request Mask . . . . . . . . . . . . . . . . . . 4,10
Data Output Format . . . . . . . . . . . . . . . . . . . . . 4,11
Program Examples . . . . . . . . . . . . . . . . . . . . . . 4,12
Reading a Measurement . . . . . . . . . . . . . . . . . . . 4,13
Input Speed. . . . . . . . . . . . . . . . . . . . . . . . . . 4,13

SECTION 5
OPERATIONAL VERIFICATION TESTS
Introduction . 5,1
Equipment Requirements . . . . . . . . . 5,1
Source Locking Setup . . . . . . . . . . . . . . . . . . . . .. . . . . . 5,2
Operational Verification Test Procedures . . . . . 5,3
Band 1 Range And Sensitivity Test (10 Hz To 10 MHz) . . . . . . 5,3
Band 1 Range And Sensitivity Test (20 MHz To 100 MHz) 5,4
Band 2 Range And Sensitivity Test .. . . . . . . . . . 5,5
Band 3 Range And Sensitivity Test 5,6
Band 3 Amplitude Discrimination Test 5,7
Band 4 Subband 1 Range And Sensitivity Test (578B Option 06 Only) . . . . 5,8
Operational Test Record 5,9

xi
 575B/578B
...........................................................................................................................................................................................................................................................................................................................................................

LIST OF ILLUSTRATIONS
Figure Page

2,1 . Rear Panel Fuse and Voltage Select Locations 2,3

3,1 Front Panel (Model 578B) 3,1

3,2 Status Display 3,2
3,3 Signal Input Connectors (Model 578B) 3,3
3,4 Rear Panel 3,3
3,5 Keyboard 3,5
3,6 Frequency Limits 3,21
3,7 Source Locking Setup 3,22
3,8 Equipment Setup for Band 4 Operation (Option 06) 3,23

5,1 Source Locking Setup 5,3

5,2 Band 1 Range and Sensitivity Test Setup (10 Hz to 10 MHz) 5,4
5,3 Band 1 Range and Sensitivity Test Setup (20 MHz to 100 MHz) 5,5
5,4 Band 2 Range and Sensitivity Test Setup 5,6
5,5 Band 3 Range and Sensitivity Test Setup 5,6
5,6 Band 3 Amplitude Discrimination Test Setup 5,7
5,7 Band 4 Range and Sensitivity Test Setup (Model 578B, Option 06) 5,8

xii
 l/GENERAL INFORMATION

GENERAL INFORMATION
DESCRIPTION
The Model 575B and Model 578B Source Locking Counters are multi.. function microprocessor
based devices. These counters are not only able to perform frequency and (optionally) power
measurement, but can also tune' and phase lock an external signal source over a wide frequency
range. The basic frequency range of the 575B is 10 Hz to 20 GHz, while the 578B extends to
26.5 GHz. When the 578B is equipped with Frequency Extension Capability (Option 06) and
used with the Model 590 and a Remote Sensor, the counter is capable of operating up to 110
GHz.

Frequency counting is divided into four bands. Band 1 is a high impedance input (1 MQ/20
pF) and covers 10 Hz to 100 MHz. Band 2 is a 50Q input operating from 10 MHz to 1 GHz.
Band 3 is also a 50Q input and covers the range of 1 GHz to 20 GHz using the 575B, and 1
GHz to 26.5 GHz using the 578B. Band 4 is an optional band and covers 26.5 to 110 GHz
and is subdivided into 4 frequency ranges.

Band 4 1 26.5 . . 40 GHz

Band 4 2 40 60 GHz
Band 4 3 60 90 GHz
Band 4 4 90 110 GHz

An optional power measurement capability (Option 02) is available to supplement Band 3.

With this option, the counter can simultaneously display frequency to 100 kHz resolution, and
power to 0.1 dB resolution from minimum sensitivity up to + 10 dBm.

The other major feature of the 57XB counters is the ability to tune and phase lock virtually
any frequency source that is capable of being electronically tuned. Two output ports are provided,
one for coarse tune and one for phase lock With these outputs a source can be locked from
10 MHz up to the maximum operating frequency of the counter. Frequencies can be selected
to a resolution of 10 kHz and maintain the long term accuracy and stability of the internal
timebase crystal oscillator.

1.. 1
 . . . . ~.Z~.?/~.Z§~ .

SPECIFICAnONS
General

Resolution Front panel keyboard input select 0.1 Hz to 1 GHz

(0.1 Hz resolution in Band 1 only; no frequency offset
or multiplier in 0.1 Hz resolution).
Gate Time 1 ms for 1 kHz resolution; 1 s for 1 Hz resolution
Display 12 digit LED, sectionalized
Accuracy ±1 count ±time base error
Test Front panel selected diagnostics
Sample Rate Controls time between measurements variable from
100 ms type to 10 s. Switchable Hold position freezes
display indefinitely.
Reset Resets display to zero and initiates new reading
Offsets Keyboard control of frequency offsets (standard) and
power offsets (standard with power measurement Option
02). Displayed frequency (power) is offset by entering
value to 1 Hz resolution (0.1 dB power).
Operation Temp. o to 50°C
Power 100/120/220/240 VAC ±10% (selectable) 50 to 60 Hz
Weight, Net 26 Ib (11.8 kg)
Weight, Shipping 32 Ib (14.5 kg)
Size (H x W x D) 3.5" x 16.75" x 14" (89 mm x 425 mm x 356 mm)
Accessories Furnished Power Cord and Operation Manual

Band 1

Frequency Range 10 Hz to 100 MHz

Sensitivity 25 mV rms
Impedance 1 MQ/20 pF
Connector BNC (female)
Max. Input Level 1 V rms
Damage Level 150 V rms (above 1 kHz, damage level will decrease at
6 dB/octave down to 3.0 V rms)

Band 2

Frequency Range 10 MHz to 1 GHz

Sensitivity --20 dBm
Dynamic Range 30 dB
Impedance 50 Q nominal
Connector BNC (female)
Max. Input Level +10 dBm

1--2
 l/GENERAL INFORMATION

Band 2 (Continued)

Damage Level +27 dBm

Acquisition Time <50 ms

Band 3

Frequency Range 1 GHz to 20 GHz (26.5 GHz for Model 578B)

Sensitivity ,30 dBm (1 GHz to 12.4 GHz)
,25 dBm (12.4 GHz to 20 GHz)
,20 dBm (20 GHz to 26.5 GHz)
Dynamic Range 40 dB (1 GHz to 12.4 GHz)
35 dB (12.4 GHz to 20 GHz)
30 dB (20 GHz to 26.5 GHz)
Impedance 50 Q nominal
Connector Precision Type N (female) (Model 575B)
APC 3.5 (female) (Model 578B)
Max. Input Level ±10 dBm
Damage Level 30 watts (+45 dBm)
Acquisition Time < 200 ms independent of frequency
Amplitude Discrimination 10 dB, if < 10 dB, will count one signal accurately if
separated by > 200 MHz
FM Modulation 20 MHz p'p up to 10 MHz rate
VSWR <2.5:1 typical
Frequency Limits Keyboard control of desired limits (standard). Counter
will measure largest signal within programmed limits.
Signal outside operating band must be separated by at
least 100 MHz from either limit. For signal more than
10 dB above desired signal, required separation is
typically 200 MHz.

TCXO Timebase

Frequency 10 MHz
Aging Rate < 1 x 10-7 per month, < 1 x 10-6 per yea
Short Term < 1 x 10--9 nus for one second averaging time
Temperature < 1 x 10--6 0 to 50°C when set at 25 °C
Line Variation <1 x 10-- 7 ±10% change
Warm,up Time 30 minutes
Output Frequency 10 MHz, square-wave, 1 V p'p minimum into 50 Q
Ext. Timebase Requires 10 MHz 1 V p'p minimum into 300 Q
Phase Noise ,95 dBc/Hz at 10 Hz from carrier

1,3
 . . . . ?Z??./~.Z§!?. .

Source Lock

Frequency Range 10 MHz (to maximum capability of counter)

Resolution 10 kHz for phase lock frequency ~50 MHz
2.5 kHz for phase lock frequency <50 MHz
Accuracy Equal to counter's timebase
Long Term Stability Equal to counter's timebase
Min. Phase Lock Signal Level Equal to counter's sensitivity
Polarity Automatically selected
Bandwidth User selectable (10 kHz, 2 kHz, or 500 Hz) or
automatically selects widest bandwidth capable of locking
Lock Time (Typ)
Coarse Tune 50 ms + 1 counter acquisition time for source bandwidth
greater than 100 Hz. Limited by source tuning speed
below 100 Hz.
Phase Lock 20 ms
Recalling Stored Data 1 counter acquisition + 100 ms limited by source tuning
speed
Output Drive (Max)
Coarse Tune Output + 10 V into 5KQ min.
Phase Lock Output
Voltage Driven ± 10 V into 5KQ min. for source gain constant
<64 MHzN
±.6 V into 5KQ min. for source gain constant
~64 MHzN
NOISE
REDUCTION
(d8)
70

60
..........
~ .........

50 " "" "-.-.

40
r-..... ........
~~~
-, "" 7.. •
~ "',o~

30
, ~
~
,~
~
-"'~..f
,~~
I' ~~I)~~.
~

" ~~. ~ ~~ -.
20
,~
'-.~~~ ~ r-,
~~.I ,~ "'~
~~ ,~
~
",
10
"" '~ "'- ,~ ,~
~
~~ -l- '-...... ~~
o ............ ~~ ~~
I- .........

10Hz 100Hz 1 kHz 10kHz 100 kHz

MODULATION FREQUENCY (SINEWAVE)

1,4
 l/GENERAL INFORMATION

Source Lock (Continued)

Current Driven ±75 MA into 10 Q max. for source gain constant

<3.2 MHz/MA
±4.5 MA into 10 Q max. for source gain constant
~.2 MHz/MA
Capture Range
Coarse Tune Entire range of selected counter band limited by
maximum output drive
Phase Lock Source gain constant X maximum output drive
Output Connector Rear panel BNC (female)
Phase Locked Spectrum
Noise Floor vs Input Frequency The noise floor extends from the carrier to approximately
the loop bandwidth. Beyond this, the noise floor decreases
12 dBlbandwidth octave. The noise floor is the greater of:

1. NOISE FLOOR = --70 dBclHz

2. NOISE FLOOR = [(20 log F) --6] dBclHz
(where F = input frequency in GHz)

MODULATION
AMPLITUDE
(Hz)
~ IIIII

,10~Jf;~ I
10 .near u
II
I
I

kJf~ AI. . I ''hit

10M
•

<k . ,near(.
I ~ • '."
kit~ (io'se ('mt
L-J e _ I
r ~
I --t-

'Jt~ ~ .' ''hit

...........
I
~
,
~ ........ ~~
I I I I I' "
I '" ~, ~ ~

SOOJf~. I I :::::
o/se L: :
~~ ~~ ~ ... ....
l'hlt
~ ~ ~ ........ ......
~ ... .... ~ ~ ........
1M - 500 It Llneqr L'
~ tvOis .''hit
I --, ~ ~~
~
... .... i 'r--.. ......
-..~
...... ~
~
...... .... '" .....
~~
-"f'!II llIl~
e (''hit '" ~
~ ........ ...... --~ ~- ::::: ~
~
........ ..... ............
illll

....... ..... ....

-..~ ...... ...., ..... ... .... ...
~~ ~
~ ...... ~~
100K ........ ..... -
..... ....... ~-. ~
. .......... ...... ...... ~~ ~ ~ .... ~
.........

~ ...
-.. :::::: ........ ......
"'' ~ .......... ~
-- .."' .
......
" ,
~~
~
~
~ ........
...... ~ ...... ....
~~
-..- .... ~ ...... !II
~ ==
10K ~
-ilIl - "'llIll"
~ -.... ~ .... ~
,
o --~ illIIlIl8~
1 Hz 10 Hz 100 Hz 1 kHz 10 kHz

SINUSOIDAL MODULATION FREQUENCY (Hz)

1--5
 . . . . ~.z~.~.(~.z§~ .

Source Lock (Continued)

Source Characteristics (required)

Coarse Tune Input
Bandwidth 5 Hz minimum
Tuning Sensitivity 10 MHzN minimum
10 GHzN maximum
Phase Lock (FM) Input
Bandwidth 2 kHz minimum
Tuning Sensitivity
Voltage Driven Input ± 2 MHzN minimum
±1000 MHzN maximum
Current Driven Input ±0.1 MHz/rnA minimum
±50 MHz/rnA maximum
Maximum FM The counter will still frequency stabilize if maximum FM
is exceeded, but accuracy and long term stability will not
equal the counter's time base.

Option 01 -- Digital to Analog Converter

Output Voltage 0.000 V to 0.999 V

Accuracy (25°C) ±0.5% ±1 mV
Temp. Stability (0 to 50°C) ±O.Ol%fC
Resolution 1 mV
Load Impedance 1 KQ minimum
Connector BNC female (on rear panel)
Protection ± 10 V ac or de applied to output connector will not
cause damage. No damage will occur by any load.

Option 02 ' Power Meter

Range Entire operating range of Band 3

Accuracy ± 1.2 dB typical 0 to 50°C
±0.5 dB typical 25°C
Resolution 0.1 dB from sensitivity to ,10 dBm
0.2 dBm to maximum input
Power Offset Math function. Allows displayed reading to be offset to
0.1 dB resolution.Selectable from front panel or via GPIB.
Conversion Time 1 gate time + 50 ms

1,6
 l/GENERAL INFORMATION

Option 05 ' Ovenized High Stability Time Base (SC,Cut)

Frequency 10 MHz
Aging Rate <5 x 10.. 10/24 hrs (after 1 hour warm-up), 1 x 10.. 7/year
Short Term Stability (1 sec avg) < 1 x 10.. 10 rms
o to + 50 °C Temperature Stability <3 x 10..8
± 10% Line Voltage Change <2 x 10.. 10
Warm,up Time (at 25°C) Within ::;;5 x 10.. 9 of final value 10 min after turn-on
Within 1 x 10.. 9 of final value 30 min after turn-on
Phase Noise ,120 dBclHz at 10 Hz from carrier

Option 06 ' Frequency Extension (578B Only)

Frequency Range 26.5 GHz to 110 GHz

Sensitivity ,25 dBm
Dynamic Range 30 dB
Connector As required by remote sensor
Max. Input Level +5 dBm
Damage Level +10 dBm
Amplitude Discrimination 20 dBm
A couismon T"nne <1 s
Remote Band Frequency Waveguide Waveguide Power Damage
Sensor Range Size Flange Range Level
(GHz) (dBm) (dBm)

91 4-1 26.5 - 40 WR-28 UG-599/U -25/-20 to+5 +10

92 4-2 40 - 60 WR-19 UG-383/U -25 to +5 +10
93 4-3 60 - 90 WR-12 UG-387/U -25 to +5 +10
94 4-4 90 - 110 WR-10 UG-387/U -25 to +5 +10
95 4-2 or 4-3 50 - 75 WR-15 UG-385/U -25 to +5 +10
96 4-1 or 4-2 33 - 50 WR-22 UG-383/U -25 to +5 +10
97 4-1 or 4-2 26.5 - 50 K-Connector* N/A -25 to +5 +10

* K,Connector is a registered trademark of the Wiltron Corporation.

Option 09 ' Rear Panel Input Connectors

Band 1 Connector BNC (female)

Band 2 Connector BNC (female)
Band 3 Connector Precision Type N (female) (Model 575B)
APC 3.5 (female) (Model 578B)
 . . . . ~.z~.~.(?z§~ .

OPTIONS AND ACCESSORIES

OPTIONS DESCRIPTION

01 DAC Output
02 Power Measurement
05 SC-cut Ovenized High Stability Timebase (Aging Rate: 5 x 10,10/dav)
06 Band 4 Frequency Extension Module. Available on Model 578B only.
Required for frequencies between 26.5 GHz and 110 GHz. Frequency
Extension Cable Kit (590) and remote sensor are also required.
09 Rear Input Configuration
10 Chassis Slides

ACCESSORIES DESCRIPTION

590 Frequency Extension Cable Kit

091 Remote Sensor 26.5 ' 40 GHz
092 Remote Sensor 40 ' 60 GHz
093 Remote Sensor 60 ' 90 GHz
094 Remote Sensor 90 ' 110 GHz
095 Remote Sensor 50 ' 75 GHz
096 Remote Sensor 33 ' 50 GHz
097 Remote Sensor 26.5 ' 50 GHz

The accessories listed above are used in conjunction with Model 578B and require Option 06.

010 Transit Case

020 Rack Mount Kit
031 Operation Manual (one supplied with each instrument)
032 Service Manual (includes Operation Manual)
040 Service Kit
050 Sof-Pac Carrying Case

1,8
575B/578B

DECLARATION OF CONFORMITY

Application Of Council Directive 89/336/EEC

Standards to which Conformity is Declared:

EMC: EN50011
EN50082-1

Standards to which Compliance is Declared:

Safety: IEC 1010-1 (1990)

Manufacturer's Name: EIP/Phase Matrix, Inc.

Manufacturer's Address: 109 Bonaventura Dr.

San Jose, CA 95134

Type of Equipment: Frequency Counter

Model Name(s): 575B/578B

Tested By: Rockford Engineering Services, Inc.

9959 Calaveras Road
Sunol, CA 94586 USA

Project Engineer: Mr. Bruce Gordon and Leo Hernandez

Reviewer: Mr. Michael Gbadebo, P .E.

I, the undersigned, hereby declare that the equipment specified

above conforms to Directives and Standards listed.

For: Phase Matrix, Inc.

Name: Mark Espinosa

Title: QA Manager

Signature: litw.L-. ~
Date: I\/ 0 \ (2..00 t-f_
. . . . ?z.?.~.(~.z§!?. .

This Page Intentionally Left Blank.

1--10
 2/INSTALLATION

INSTALLATION
UNPACKING AND INITIAL INSPECTION
If the shipping container or cushioning material is damaged, it should be kept until the contents
of the shipment have been checked for completeness and the instrument has been checked
mechanically and electrically If the contents are incomplete, if there is mechanical damage or
defect, or if the instrument does not pass the electrical performance tests, notify EIP in care of
the address shown on the title page. If the shipping container is damaged, or the cushioning
material shows signs of stress, notify the carrier as well as EIP. Keep the shipping materials for
carrier's inspection. EIP will arrange for repair or replacement of the instrument without waiting
for claim settlement.

STORAGE
Store the instrument in an environment that is protected from moisture, dust, and other
contaminants. Do not expose the instrument to temperatures below . . 55 "C or above 75°C,
nor to altitudes above 40,000 ft. (12,000 m).

OPERATING CONDITIONS
This instrument is designed to be operated at temperature not exceeding 0 to 50°C at relative
humidity not to exceed 95% (75% over 25 °C; 45% over 40°C). This instrument will perform
to specifications at altitudes not exceeding 10,000 ft. (3050 m) and will tolerate vibration not
exceeding 2 g. It is fungus resistant. The chassis is not designed to provide protection from
mechanical shock or falling water particles and is intended for normal bench use in an
environmentally clean area. .

VENTILATION
Air circulates through the vents in the rear panel of the counter. These vents must not be
obstructed or the temperature inside the counter may increase enough to reduce counter stability
and shorten component life.

2.. 1
 . . . . ?Z?~./~.Z§.!? .

INSTALLATION
There are no special installation instructions for the EIP 575B or 578B frequency counter. These
units are self-contained bench or rack mounted instruments that only require connection to a
standard, single.. phase power line for operation.

PREPARATION FOR USE

VOLTAGE SELECTION

CAUTION
Disconnect ac power cord before changing voltage selection switch.

The voltage select switch should be set to the proper line voltage. (See Figure 2.. 1.) To change
the line voltage, proceed as follows:

1. Disconnect the counter from the power line.

2. Using a screwdriver, turn the slotted voltage indicator to the desired position.

FUSE REPLACEMENT

WARNING
Disconnect ac power cord before replacing fuse.

The fuse for the counter is located on the rear panel above the line voltage socket. The type
of fuse used in your counter depends upon the primary power, as follows:

Line Voltage Fuse Type

100/120 Vac 1.5 A Slow-blow MOL
200/220 Vac 0.8 A Slow-blow FST

To release the fuse, use a screwdriver to rotate the slotted cap counterclockwise. To reinstall
the fuse, press the fuse and slotted cap assembly into the fuse cavity and turn cap clockwise
until it locks into place.

CAUTION
To avoid damage to the counter, always be sure that the fuse used
is the type and value specified, and that the voltage select switch
is set to correspond to the ac power input voltage. (See Figure
2-1.)
 2/INSTALLATION

100/120 VAC - 1.5A SB

220/240 VAC - .BOA SB

D~
~--e
V.A.C.
50/60 Hz

Figure 2~1. Rear Panel Fuse and Voltage Select Locations.

INCOMING OPERATIONAL CHECKOUT

The following tests are designed to provide a basic operational check of the instrument. If more
extensive testing is required, refer to Section 5.

1. Before connecting power to the instrument, check the rear panel to make sure the correct
fuse is installed and the V.A.C. switch is set properly.

2. Connect the power cord to the appropriate single-phase power source. The ground terminal
on the power cord plug must be properly grounded.

3. Turn the POWER switch to ON. Dashes will be displayed for about one second. The
counter should then display all zeros indicating that the automatic self-check has been successfully
completed.
TEST
4. PRESS: 0 8 8 Display should read 200 000 000 ±1.

TEST
5. PRESS: 0 8 0 Display should read all 8's and all annunciators should be lit.

TEST
6. PRESS: 0 8 0 Each display segment should light in turn.

TEST
7. PRESS: 0 8 GJ Each digit should light in turn.

This completes the incoming operational check.

 . . . . ?z?..~.(~.Z?~ .

SERVICE INFORMATION
PERIODIC MAINTENANCE
No periodic preventive maintenance is required. To maintain accuracy, it is recommended that
the counter be recalibrated every 12 months. For further information, refer to the service manual.

CAUTION
Do not attempt repair or disassembly of the Microwave Converter,
Millimeter Wave Converter, or Time Base Oscillator assemblies. Such
action will void the warranty of the counter. Contact EIP or your
sales representative if these units require servicing.

COUNTER IDENTIFICATION
This counter is identified by three sets of numbers the model number (575B or 578B), serial
number, and a configuration control number (CCN). They are located on a label affixed to the
frame at the rear of the counter. These numbers must be included in any correspondence regarding
your counter.

FACTORY SERVICE
If the counter is being returned to EIP for service or repair. be sure to include the following
information with the shipment.

• Name and address of owner.

• Model number, serial number, and configuration control number of the Counter (listed on
the reat panel of the counter).
• A complete description of the problem. (E.g., under what conditions did the problem occur?
What was the signal level? What equipment was attached or connected to the counter? Did
that equipment experience failure symptoms?)
• Name and telephone number of someone familiar with the problem who may be contacted
by EIP for any further information if necessary.
• Shipping address to which the counter is to be returned. Include any special shipping instructions.

Pack the counter for shipping as detailed below.

SHIPPING INSTRUCTIONS
Wrap the counter in heavy plastic or kraft paper, and repack in original container if available.
If the original container cannot be used, use a heavy (275 pound test) double-walled carton
with approximately four inches of packing material between the counter and the inner carton.
Seal carton with strong filament tape or strapping. Mark the carton to indicate that it contains
a fragile electronic instrument. Ship to EIP Microwave, Inc. at the address shown an the front
cover.

2,4
 3/0PERATION

OPERATION
INTRODUCTION
This section lists the counter controls, connectors, and indicators, explains how each counter
function operates, and provides some general measurement considerations.

;" ""'" -, " ",' -, "'" -, -, '" -, EXT REF FRO LMT BND 1
>' -, ~ dBm DAC LOW HI 2 3
~ ~ LCK BW OFFSET 41 42
~~GHi. ~J4ff§g§#ff"MfJ,:!Af4A4#¥~J4Z444#a ~ ~~, Nt ~: RMT MLT FRO PWR 43 44

DIiJDljJI MODEL5788 SOURCELOCKING MICROWAVE COUNTER

SAMPLERATE

OFF.RON 0 • GATE POWERMETER

•••
onIoff offset dB

HOLD • SEARCH [!!]

Figure 3,1. Front Panel (Model 578B)

FRONT PANEL CONTROLS, CONNECTORS, AND INDICATORS

• POWER switch ' turns counter on.
• SAMPLE RATE/HOLD control -- varies time between measurements from 0.1 to 10 seconds
(nominal), (Gate time is added to sample time, thus the minimum reading for 1 Hz resolution
is 1.1 seconds.) The last reading is retained indefinitely in HOLD until Reset is issued.
• GATE indicator ' lights when the signal gate is open and a measurement is being made.
• SEARCH indicator ' lights when the counter is not locked to an input signal.
• Data display -- The 12 digit LED display provides a direct numerical readout of a measurement
or of an input frequency. The frequency readout is displayed in a fixed position format that
is sectionalized in GHz, MHz, kHz and Hz. Power information is displayed in dBm to 0.1 dB

3--1
 . . . . ~.z~.?(?.z§~ .

resolution, on the three right..most digits. When both power and frequency are displayed,
frequency resolution is limited to 100 kHz.
• Status display .. a series of annunciators provided to indicate current operating status of the
counter.
• Keyboard .. both data entry and function selection are controlled through the keyboard (see
Keyboard Section on page 3..5).

Figure 3..2. Status Display.

STATUS DISPLAY

• EXT REF .. lights to indicate the counter is set to an external time base reference.

CAUTION
When EXT REF lights it does NOT indicate that correct signal level
has been applied.

• dBm .. lights to indicate that the Power Meter (Option 02) is active.
• LCK .. lights when the counter has phase locked an external source.
• RMT .. lights to indicate that front panel controls are disabled, and that the counter is being
controlled through the GPIB interface.
• DAC .. lights to indicate that that the Digital..to..Analog Converter (Option 01) is active.
• BW .. lights to indicate a phase lock loop bandwidth has been selected.
• MLT .. lights to indicate the multiplier function is active.
• FRQ LMT LOW . . lights when Band 3 frequency limit low is active.
• FRQ LMT HI .. lights when Band 3 frequency limit high is active.
• OFFSET FRQ . . lights when frequency offset is active.
• OFFSET PWR .. lights when power offset is active.
• BND 1, 2, 3, 41, 42, 43, or 44 .. lights to indicate which operating range has been selected.
When any Band 4 annunciator is lit it indicates that the Extended Frequency Capability,
Option 06, has been selected (578B only).

3..2
 3LOPERATION

\
I
BAND1 BAND4
10 Hz-100 MHz
REMOTE

G
1 MEGI20pF
SENSOR

o
W
BAND3
1 GHz-26.SGHz
BAND2
10MHz-1 GHz

G
@-t-TOBAND3
50 OHM
-e
, SO OHM

Figure 3--3. Signal Input Connectors (Model S78B).

SIGNAL INPUT

• BAND 1 input connector (BNC female) -- has a nominal input impedance of 1 MQ, shunted
by 20 pF. It is used for measurements in the range of 10 Hz to 100 MHz.
• BAND 2 input connector (BNC female) -- has a nominal input impedance of 50 Q. It is used
for measurements in the range of 10 MHz to 1 GHz.
• BAND 3 input connector (precision type N female for the Model 575B, APC--3.5 female for
Model 578B) -- has a nominal input impedance of 50 Q. It is used for measurements in the
range of 1 GHz to 20 GHz (26.5 for Model 578B).
• BAND 4 (Option 06, Model 578B only) -- is a Selectro quick connect connector with a
nominal input impedance of 50 Q. It is used for measurements in the range of 26.5 GHz to
110 GHz. This input is used in conjunction with the Model 590 Frequency Extension Cable
Kit and a remote sensor.

IIIIIIIIIIIIIIIIIIII! ~J4 • • G.P.I.B.

®
J6 F1
1OM20 VK; -1.5A
22Ql24O VK; - .BOA

BAND 3
TORMT~
SENSOR-..,
A J111
_
• <I>
INT
OUT
(!)
e J2 o LOCKOUT
J7

J113
BAND 4 J114 B BAND 1 EXT J
10 MHz
J3
IEEESTD.488-1978
(8H1,AH1,T&,LA,8R1, RL1,001, DT1)
®
~~TO~D3T J::t IIiii 11111--------_ _
_ COARSE
TUNEOUT
VAC.
5Qf80Hz
-----a 8

Figure 3--4. Rear Panel.

3--3
 . . . . ~.z~.~.(~.z§!? .

REAR PANEL CONTROLS AND CONNECTORS

• Spaces labeled BAND 1, BAND 2, BAND 3, BAND 4, and TO RMT SENSOR, are used
on instruments equipped with Option 09, Rear Panel Input.
• TIME BASE ADJUST control, is used with options 03,04, or 05 only. Screwdriver adjustment
allows precise setting of the internal oven oscillator.
• TIME BASE INT/EXT switch, selects either the internal time base or an external 10 MHz
reference.
• TIME BASE connector (BNC female) , allows monitoring of internal 10 MHz time base or
input of an external 10 MHz reference.
• DAC OUT connector (BNC female) , provides an analog voltage proportional to any specified
three digits of frequency displayed, in instruments equipped with Option 01, Digital to Analog
Converter.
• G.P.I.B. connector, is used for remote operation with the IEEE 488 ' 1978 General Purpose
Interface Bus.
• 0 LOCK OUT connector (BNC female) , provides control signal for phase locking an electrically
tunable signal source.
• COARSE TUNE OUT connector (BNC female) , provides control signal for coarse tuning
an electrically tunable signal.
• F1 fuse ' provides current overload protection.
• V.A.C. switch, sets the operating voltage of the counter to match power line voltage.

CAUTION
Switch setting and fuse rating must match power line voltage. Refer
to Installation Section for more information.

• AC power connector, accepts the power cord supplied with the counter.

INSTRUMENT DEFAULT SETTINGS

When the counter is initially turned on the state of the counter is determined by a set of default
values which are stored in memory. The factory-set values are listed below.

Parameter Default Value

Band 3 (Microwave Band)
Subband 1
Resolution o (1 Hz)
Frequency Multiplier 01
Frequency Offset o Hz
Frequency Limit Low 950 MHz
Frequency Limit High 20.5 GHz (Model 575B)
26.7 GHz (Model 578B)
Frequency Display On

3,4
 3/0PERATION

••• 11III
BAND RES TEST

..
MHz

UNITS

-" ..
OFFSEl FREQ LIMIT

IIJI
FREQ
low 19 GHz

iii •• 11II
B.W. LOCK DATA

MULT FREQ
CLEAR
I.DAC I e LOCK
•••
STORE RCL
on/offPOWER METER dB

•••
offset
[ iii]
LOCAL
DISPLAY

Figure 3,5. Keyboard.

KEYBOARD
The keyboard consists of 16 push button keys that control the major functions of the counter.
Twelve keys are used for numerical data entry-the digits 0 through 9, the decimal point and
the change sign (±) . Two keys (MHz and GHz) act as terminators for the input of frequency
offset, frequency limits, or phase lock frequency. The CLEAR DATA and CLEAR DISPLAY
keys are used to clear stored or displayed data. Twelve of the keys are also used to select the
band, resolution, test function, frequency offset, frequency multiplier, frequency limits, band
width, lock frequency, phase lock, store, and recall function.

RESET/LOCAL
RESET/LOCAL is a dual function key. When the counter is in remote, pressing the
RESET/LOCAL key once causes the counter to return to local. When in local, pressing the
RESET/LOCAL key resets the counter and converter and initiates a new measurement.

UNITS (MHz/GHz)
The MHz and GHz keys are terminators for the input of frequency offset, frequency limits, and
phase lock frequency.

CLEAR DATA/CLEAR DISPLAY

Keyboard Examples:
DATA

PRESS: 0
CLEAR
to return data of selected function to default state. Clears limits, offsets, DAC,
multiplier, bandwidth, lock frequency, and stored phase lock information.
CLEAR

PRESS: 0
DISPLAY
to clear display. Does not affect stored data. Restores counter to display
measurement. Clears entry if counter is in data entry mode.

3,5
 . . . . ~.z~.~.(~.z§.~ .

COUNTER CONTROL FUNCTIONS

BAND SELECTION

The BAND key followed by a numeric key selects the desired band.

Keyboard Examples:
BAND
PRESS: 0 0 to select Band 1.

BAND
PRESS: 0 0 to select Band 2.

BAND
PRESS: 0 0 to select Band 3.

GPIB Examples:

Enter: OUTPUT 719;"B1" to select Band 1.

Enter: OUTPUT 719;"B2" to select Band 2.

Enter: OUTPUT 719;"B3" to select Band 3.

On the Model 578B equipped with Option 06, four additional frequency bands may be selected
(Band 41 thru 44).

Keyboard Examples:
BAND
PRESS: 0 8 0 where X is a number between 1 and 4.

BAND
PRESS: 0 8 0 to select Band 42.

GPIB Examples:

Enter: OUTPUT 719;"41" to select Band 41.

Enter: OUTPUT 719;"44" to select Band 44.

RESOLUTION/GATE TIME SELECTION

The RES key followed by a numeric key between 0 and 9 set the least significant digit of the
display as a power of 10, thereby selecting measurement resolutions from 1 Hz to 1 GHz. Since
the gate time is determined by the selected resolution, this key also (indirectly) selects the gate
time.

3--6
 3/0PERATION

Keyboard Examples:
RES
PRESS: 00 to select a 1 Hz resolution (1 second gate time).

RES
PRESS: 08 to select a 10 Hz resolution (.1 second gate time).

RES
PRESS: 00 to select a 100 Hz resolution (.01 second gate time).

RES
PRESS: OGJ to select a 1 kHz resolution (1 ms gate time).

RES
PRESS: 08 to select a 10 kHz resolution (1 ms gate time).

RES
PRESS: OGJ to select a 1 GHz resolution (1 ms gate time).

GPIB Examples:

Enter: OUTPUT 719;"RO" to select a 1 Hz resolution.

Enter: OUTPUT 719;"R1" to select a 10 Hz resolution.

Enter: OUTPUT 719;"R6" to select a 10 MHz resolution.

Enter: OUTPUT 719;"R9" to select a 1 GHz resolution.

0.1 Hz Resolution

In Band 1 only, the counter also provides a 0.1 Hz resolution. When 0.1 Hz is selected in
Band 1, the significance of the digits on the front panel display is shifted left 3 digits. For
example, a 9 MHz signal input is displayed as 9 GHz. One digit is displayed to the right of the
decimal, and the two right-most digits are blanked out. The display digit to the right of the
decimal will be zero until the measurement is updated at the end of the 10 second gate interval.

Keyboard Examples:
BAND

PRESS: 0 8 to select Band 1.

RES
PRESS: 0 0 8 toselectaO.1 Hz resolution.

GPIB Examples:

Enter: OUTPUT 719;"B1" to select Band 1.

Enter: OUTPUT 719;"R.1" to select a 0.1 Hz resolution.

3,7
 . . . . ~.Z~.~./~.Z§~ .

FREQUENCY LIMITS

The frequency limit keys enable entry of low and/or high frequency limits to 10 MHz resolution
in Band 3. The converter is reset after the entry sequence.

To Input Frequency Limits

Keyboard Examples:
FREQ LIMIT

PRESS: o low
to display the low frequency limit last entered. (Notice flashing annunciator.)

PRESS: o (the corresponding number key) to select desired frequency low limit to
10 MHz resolution.
MHz GHz

PRESS: DorD to terminate the input sequence. (Notice FRO LMT LOW
annunciators solidly lit after terminator key is released.)
FREQ LIMIT GHz

PRESS: 0 0 0
low
to set a low frequency limit of 2 GHz.

FREQ LIMIT

PRESS: 0 high
to display the high frequency limit last entered.
annunciator.)
(Notice flashing

PRESS: 0 (the corresponding number key) to select desired frequency high limit to
10 MHz resolution.
MHz GHz

PRESS: DorD to terminate the input sequence. (Notice FRO LMT HI

annunciators solidly lit after terminator key is released.)
FREQ LIMIT GHz

PRESS: 0 0 0
high
to set a high frequency limit of 6 GHz.

GPIB Examples:

Enter: OUTPUT 719;"FL2GHZ" to select a low frequency limit of 2 GHz.

Enter: OUTPUT 719;"FH6GHZ" to select a high frequency limit of 6 GHz.

To Display Stored Limits

Keyboard Examples:
FREQ LIMIT FREQ LIMIT

PRESS: 0 low
or 0 high
to display stored frequency low/high limit.

CLEAR

PRESS: 0 to return counter to measurement display mode.

DISPLAY

3,8
 3/0PERATION

To Clear Frequency Limits

Keyboard Example:
FREQ LIMIT CLEAR FREQ LIMIT

o o
CLEAR

PRESS: 0 low
o
DATA
or
high DATA

NOTE
High and low limits should be separated by at least 100
MHz.

GPIB Examples:

Enter: OUTPUT 719;"FLP" to reset low frequency limit to factory default.

Enter: OUTPUT 719;"FHP" to reset high frequency limit to factory default.

DATA MANIPULATION FUNCTIONS

FREQUENCY OFFSET

Frequency offset function enables the entry of a positive or negative frequency offset to 1 Hz
resolution. The offset will be incorporated into the frequency measurement after the next gate.

To Input Frequency Offsets

Keyboard Examples:
FREQ

PRESS: o
OFFSET
to display frequency offset last entered. (Notice flashing annunciator.)

PRESS: 8 (the corresponding number key) to select desired offset frequency to 1 Hz

resolution.
MHz GHz

PRESS: DorD to terminate the input sequence. (Notice FRO OFFSET annunciators solidly
lit after terminator key is released.)
FREQ GHz

PRESS: 0 0 0 to set a frequency offset of 2 GHz.

OFFSET

GPIB Examples:

Enter: OUTPUT 719;"F02GHZ" to select 2 GHz frequency offset.

Enter: OUTPUT 719;"FOP" to clear frequency offset.

3,9
 . . . . ~.z~.~.(~.z§~ .

To Display Stored Offset

Keyboard Examples:
FREQ

PRESS: 0 to display stored offset.

OFFSET
CLEAR

PRESS: 0 to return counter to measurement display mode.

DISPLAY

To Clear Frequency Offsets

Keyboard Example:
FREQ CLEAR FREQ GHz FREQ GHz
PRESS: ODor 000 or DO
OFFSET DATA OFFSET OFFSET

GPIB Example:

Enter: OUTPUT 719;"FOP" to remove frequency offsets.

MULTIPLY FUNCTION
The multiply function multiplies the measured frequency by a positive integer between 1 and
99. The result is displayed to 1 kHz resolution. The multiplier will be incorporated into the
frequency measurement after the next gate.

To Enter Multiplier

Keyboard Examples:
FREQ

PRESS: 0 to display multiplier last entered. (Notice flashing annunciator.)

MULT

PRESS: 8 0 {the corresponding number keys} to select desired multiplier. (Notice

MLT annunciator solidly lit after second key is released.)
FREQ
PRESS: 0 8 8
MULT
to set a frequency multiplier of 2.

GPIB Examples:

Enter: OUTPUT 719;"ML02" to set a frequency multiplier to 2.

Enter: OUTPUT 719;"ML99" to set a frequency multiplier to 99.

3--10
 3/0PERATION

To Display Multiplier

Keyboard Examples:
FREQ

PRESS: 0 to display stored frequency multiplier.

MULT
CLEAR

PRESS: 0 to return counter to measurement display mode.

DISPLAY

To Clear Multiplier

Keyboard Example:
FREQ CLEAR FREQ

PRESS: DOor
MULT DATA
DGJGJ
MULT

GPIB Example:

Enter: OUTPUT 719;"MLP" to clear the multiplier function.

mX±B
By using the frequency offset and multiply functions the counter can automatically perform
mX±B calculations.

The equation for the function performed is:

Displayed Reading = mX±B where m= Multiplier (00 to 99) entered from the keyboard.
x= Input frequency.
±B= Frequency offset entered from the keyboard.

To do mX±B calculation for m = 2, b = 70 MHz

Keyboard Example:
FREQ FREQ MHz

PRESS: 0 GJ GJ and DGJGJD

MULT OFFSET

SOURCE LOCKING FUNCTIONS

PHASE LOCK FREQUENCY

Enables entry of a phase lock frequency to: a) 10 kHz resolution if the phase lock frequency
is above or equal to 50 MHz, or b) 2.5 kHz resolution if the phase lock frequency is below 50
MHz. The counter will attempt to phase lock after the entry sequence is terminated. The
phase lock operation will terminate if the RESET/LOCAL key is pressed while the counter is
attempting to phase lock.

3--11
 . . . . ~.z~.~.(?Z?~ .

NOTE
If the tuning voltage required to set a source at a particular
frequency changes in excess of the capture range of the
phase lock circuitry, the counter will not be able to re-Iock
the source uslru; stored lock frequencies.

To Enter Phase Lock Frequency

Keyboard Examples:
LOCK

PRESS: 0 to display phase lock frequency last entered. (Notice flashing annunciator.)
FREQ

PRESS: 8 (the corresponding number key) to select desired phase lock frequency.

MHz GHz

PRESS: OorO to terminate input sequence. Notice LCK annunciator continues to flash
while counter is attempting to phase lock. LCK annunciator lights solidly
when phase lock is successful. If phase lock is unsuccessful, the LCK
annunciator continues to flash until lock is achieved or until the sequence
is manually terminated.
LOCK GHz

PRESS: 0 8 GJ 0 to select a 10 GHz phase lock frequency.

FREQ

GPIB Example:

Enter: OUTPUT 719;"PL2GHZ" to select 2 GHz phase lock frequency.

To Display Phase Lock Frequency

Keyboard Examples:
LOCK

PRESS: 0 to display phase lock frequency to a 1 Hz resolution.

FREQ
CLEAR

PRESS: 0 to return counter to measurement display mode.

DISPLAY

To Clear Phase Lock Frequency

Keyboard Example:
LOCK CLEAR LOCK GHz LOCK GHz

PRESS: ODor 000 or DO

FREQ DATA FREQ FREQ

3--12
 3/0PERATION

NOTE

When the counter is attempting to phase lock, the information

displayed on the front panel is the frequency the counter is
attempting to phase lock to. During the phase lock process,
if the RESET/LOCAL key is pressed, the counter will abort
the process and return to regular measurement mode. After
phase lock frequency is cleared, the coarse tune output will
return to +5 V and the phase lock output will return to 0 V.

GPIB Example:

Enter: OUTPUT 719j"PLP" to remove phase lock frequency.

PHASE LOCK

The 0 LOCK key is used in conjunction with the RCL key function to enable the user to phase
lock a stored frequency expeditiously. (See description of RECALL function.) The front panel
displays the frequency the counter is trying to phase lock, and the LCK annunciator flashes.
When the phase lock process is successful, the annunciator will be solidly lit; if unsuccessful,
the annunciator will continue to flash until the function is manually terminated.

BANDWIDTH
The B.W. key followed by a numeric key selects the phase lock loop bandwidth as follows:

Keyboard Examples:
B.W.

PRESS: 0 8 to select a 500 Hz loop bandwidth.

B.W.

PRESS: 0 8 to select a 2 kHz loop bandwidth.

B.W.

PRESS: 0 0 to select a 10 kHz loop bandwidth.

B.W.

PRESS: 0 8 to automatically select loop bandwidth.

Bandwidth 0 enables the counter to automatically select the phase lock loop bandwidth. When
BWO is selected, the counter, during the phase lock process, will try to close the phase lock
loop in the 10 kHz, 2 kHz and 500 Hz bandwidth sequentially. It will select the first bandwidth
in which it can hold phase lock.

GPIB Examples:

Enter: OUTPUT 719j"BWl" to select a 500 Hz loop bandwidth.

Enter: OUTPUT 719j"BW3" to select a 10 kHz loop bandwidth.

3,13
 . . . . ~.Z.~.Jj}./~.Z§~ .

To Display Stored Bandwidth

Keyboard Examples:
B.W.

PRESS: o to display last selected bandwidth number followed by the bandwidth in Hz.
(Notice flashing annunciator.)
CLEAR

PRESS: o
DISPLAY
to clear the display without changing stored setting.

STORE
The STORE key stores the current phase lock frequency in a selected register. This function
can be activated only after the counter has been phase locked. An error will occur if the
function is activated when the counter is not phase locked. The STORE function reduces the
time required to phase lock when the stored phase lock frequency is recalled. There are a total
of nine storage registers.

Keyboard Examples:
STORE

PRESS: o to display current phase lock frequency to 100 Hz resolution.

flashing annunciator.)
(Notice

PRESS: 8 (an integer between 1 and 9, inclusive) to display the storage register in
which the phase lock information is to be stored.
STORE

PRESS: 0 [2] to store the current phase lock frequency in register 1.

GPIB Example:

Enter: OUTPUT 719;"ST2" to store current phase lock frequency in register 2.

RECALL
The ReL key enables the counter to perform one of the following functions:

1. To display one of the stored phase lock frequencies;

2. To phase lock to one of the stored phase lock frequencies; or

3. To clear a stored phase lock frequency.

3,14
 3.LOPERATION

To Display a Stored Phase Lock Frequency

Keyboard Examples:
RCL
PRESS: o to display the word reI. (Notice flashing annunciator)

PRESS: 8 (the corresponding number key) to display the storage register to be

recalled. (Note that the stored phase lock frequency is displayed to a
resolution of 100 Hz and is followed by the storage register number.)
CLEAR
PRESS: o
DISPLAY
to return counter to measurement display mode.

To Phase Lock to a Stored Phase Lock Frequency

Keyboard Examples:
RCL
PRESS: 0 to display the word rei. (Notice flashing annunciator)

PRESS: 8 (the corresponding number key) to display the storage register to be

recalled. (Note that the stored phase lock frequency is displayed to a
resolution of 100 Hz and is followed by the storage register number.)
e LOCK
to phase lock to the recalled frequency. (Note: if the recalled frequency is
PRESS: 0 outside the frequency range of the current band, the phase lock frequency
register will not be altered.)
GPIB Example:

Enter: OUTPUT 719;"RC2L" to phase lock to the frequency stored in register 2.

To Clear a Stored Phase Lock Frequency

Keyboard Examples:
RCL
PRESS: o to display the word rei. (Notice flashing annunciator)

PRESS: 8 (the corresponding number key) to display stored phase lock frequency to
100 Hz resolution followed by the storage register number.
DATA

PRESS: o
CLEAR
to clear the stored phase lock frequency.

DAC
DESCRIPTION

The DAC key provides control of the optional (Option 01) digital-to-analog converter. This
key is used to select three consecutive display digits. The selected digits are converted to an
analog voltage between 0 and .999 volts and applied to the rear panel connector. The output
voltage corresponds to the numeric display, substituting zeros for any non-numeric characters
that appear. The output will be updated after every display update.

3--15
 . . . . ?z.?~.(?.z§.!?. .

KEYBOARD OPERATION

To enable the DAC (Digital-to-Analog Converter), press the DAC key followed by two digits
(01--12). The number keyed in will select the most significant digit.

Keyboard Examples:
DAC
PRESS: 0 8 Q to select the 1 kHz, 100 Hz, and 10 Hz digits.

DAC
PRESS: 0 8 0 to select the 1 MHz, 100 kHz, and 10 kHz digits.

DAC
PRESS: 0 8 G to turn the DAC off.

GPIB Examples:

Enter: OUTPUT 719;"DC04" to turn on the DAC and select the 1 kHz, 100 Hz, and 10 Hz
digits.

Enter: OUTPUT 719;"DC07" to turn on the DAC and select the 1 MHz, 100 kHz, and 10
kHz digits.

Enter: OUTPUT 719;"DC12" to turn on the DAC and select the 100 GHz, 10 GHz, and 1
GHz digits.

Enter: OUTPUT 719;"DCP" to turn off the DAC.

POWER METER
DESCRIPTION

The POWER METER keys provide control of the optional (Option 02) power meter. The
power meter option measures the power of signals applied to Band 3. The power is displayed
(to 0.1 dB resolution) simultaneously with frequency (to 100 kHz max. resolution). For AM
and FM averaging purposes, gate time is controllable in the power meter mode through the
resolution function. Power gate time mirrors frequency gate time. For example, in resolution
o the frequency gate time is 1 second, and the power gate time is 1 second. In resolution 1
the frequency gate time is 100 ms, and the power gate time is 100 ms. Option 02 allows power
offsetsfrom --99.9 dB to 99.9 dB, with a 0.1 dB resolution and will not degrade the basic performance
of the counter.

KEYBOARD OPERATION

Three keys control the power measurement function.

 3/0PERATION

Keyboard Examples:
on/off

PRESS: 0 to activate/deactivate power meter.

offset

PRESS: 0 to activate the power offset function.

dB

PRESS: 0 to terminate power offset function.

GPIB Examples:

Enter: OUTPUT 719;"PA" to tum on the power meter.

Enter: OUTPUT 719;"PP" to turn off the power meter.

Enter: OUTPUT 719;"POI0DB" to set a power offset of 10 dB.

Enter: OUTPUT 719;"POODB" to clear a power offset.

Enter: OUTPUT 719;"OP" to disable offsets.

Enter: OUTPUT 719;"OA" to enable offsets.

TEST SELECTIONS
This counter incorporates an automatic power-on self-test along with a variety of performance,
calibration and troubleshooting tests accessible from the front panel.

POWER,ON TESTS

The power,on tests are automatically performed by the counter and verify proper operation of
most functional areas of the counter. As part of the power-on test, the counter checks its RAM
and PROM memory. During these tests, dashes are displayed on the front panel. If all tests
pass, the counter will begin normal operation about one second after turn-on. If the RAM test
fails, all 12 sections of the display will read "E", which indicates that either the RAM or RAM
decoding circuit is faulty. If the PROM test fails, the error message will be displayed indicating
that either the PROM or the PROM decoding circuitry is faulty.

TEST FUNCTIONS
In addition to the power-on tests, the counter features a variety of other performance, calibration,
and configuration tests accessible via the TEST key on the front panel. The following is a list
of these tests:

TEST 01 - , 200 MHz Self,Test

This function is used to verify that the Count Chain, Gate Generator, and the VCO are operational.
TEST
PRESS: 0 8 8 to activate this test.

3,17
 . . . . ?z?~.(~.Z?~ .

When this function is entered, the counter will do the following:

1. Exit the current band.

2. Set the hardware to the self... test mode.

3. Set the veo to 400 MHz.

4. Set the counter to take frequency measurements only.

5. Begin frequency measurements.

The display will show the frequency measurement results. These results will be output to the
GPIB interface when frequency readings are requested. The measurement result should be 200
MHz ±1 count.

TEST 02 --- Light Display Segments Test

This test will light all LEDs, annunciators, and decimal points. It is used to verify that all
displays light, to check the intensity of the display, and to align the LEDs and annunciators.
TEST
PRESS: 0 8 0 to activate this test.

TEST 03 --- Scan Display Segments Test

This test lights each segment of every digit and each annunciator in every bank sequentially.
The cycle rate can be adjusted with the sample rate control. It is used to verify that each
segment of the display, each segment driver, and the display multiplexer operates properly and
independently.
TEST
PRESS: 0 8 (2] to activate this test.

TEST 04 --- Scan Display Digits Test

This test lights all segments of each digit and its decimal point simultaneously. The test cycles
through all digits and annunciators. The cycle rate is determined by the sample rate control.
It is used to check each digit and digit driver independently, and verifies operation of the display
multiplexer.
TEST
PRESS: 0 8 Q to activate this test.

TEST 05 --- Keyboard Test

This function is used to verify the operation of the keyboard.

After this function is activated, the counter stops normal operation. The display shows the key
code of the last key pressed. When a new key is pressed, the display is updated to show the
code of the the new key. When the GPIB controller requests a key code, the code of the last

3--18
 3/0PERATION

key pressed is output. (If the controller requests a key code, the counter will output to the
GPIB interface the code of the last key pressed even if Special Function 05 is not activated.)
If the counter is in LOCAL, this function must be terminated by the CLEAR DISPLAY key.
If it is in remote, this function can be terminated by any device.. dependent command.
TEST
PRESS: 0 8 8 to activate this test.

TEST 06 - . . Converter Ramp Test

This test continuously ramps the Band 3 Converter DAC through its range. It is used to test
the YIG DAC, YIG drivers, YIG, and Band 3 RF level circuits.
TEST
PRESS: 0 8 8 to activate this test.

TEST 07 - . . Sweep VCO Test

This test cycles the VCO from 400 to 500 MHz in increments of 50 kHz. The cycle rate can
be adjusted using the sample rate control. It is used to test the VCO and phase lock circuitry.
TEST
PRESS: 0 8 0 to activate this test.

TEST 08 -... Power Meter Offset Test

This test sets the power meter zero DAC. The setting is entered as a four digit hexadecimal
number. The first two digits are used to program the coarse offset DAC, and the last two digits
program the fine offset DAC. Test 08 enables the power meter zero DAC to be tested, and
provides a DC level signal to aid in troubleshooting power meter circuitry.
TEST
PRESS: 0 8 8 to activate this test.

TEST 09 -... Power Meter Gain Test

This test sets the power meter sensing circuit to a selected number. The number is entered as
a five.. digit hexadecimal number in the following format:

1st digit AI07UI0 bits 4 7

2nd digit AI07UI0 bits 0 3 .
3rd digit AI07U12 bits 4 7 (Power Meter Option only)
4th digit AI07U12 bits 0 3 (Power Meter Option only)
5th digit bit 0 Sets Amp marked "15 dB Gain" to high gain.
5th digit bit 1 Sets Amp marked "30 dB Gain" to high gain.

Digit 5 is a 2.. bit number, so any number entered for digit 5 will be justified to a number from
0.. 3. Test 09 tests the RF level and power meter circuits.

TEST
PRESS: 0 8 8 to activate this test.

3.. 19
 . . . . ~.Z~.~f~.Z§~ .

TEST 10 - , Memory Read/Alter Routine

Test 10 reads the microprocessor address and, if that address is RAM or I/O, can change its
contents. The desired address is entered as a 4,digit hexadecimal number. When the 4th digit
is entered, the counter displays the contents of the entered address. The contents can then be
changed by entering a two-digit hexadecimal number.

NOTE

Access to this test is controlled by an internal memory protect

switch. Attempting to access this test without switching the
memory protect switch will cause the counter to generate
an error message.

TEST 90 - , Display and/or Alter GPIB Address

When this function is activated, the counter displays the current address of the GPIB interface.
If the address does not need to be changed, the function can then be terminated by pressing
the CLEAR DISPLAY key.

After this function has been activated, the GPIB address can then be changed by entering a
two-digit number between 01 and 99, inclusive.
TEST

PRESS: 0 0 8 to activate this test.

PRESS: 8 8 to set the GPIB address to 19.

CLEAR

PRESS: 0 to exit the test.

DISPLAY

TEST 91 - , YIG DAC Automatic Calibration

This function is used to calibrate the Band 3 input filter. Refer to the service manual for
complete information.

NOTE

Access to this test is controlled by an internal memory protect

switch. Attempting to access this test without switching the
memory protect switch will cause the counter to generate
an error message.

TO EXIT TESTS
CLEAR

PRESS: 0 to exit a test and return to normal operation.

DISPLAY

3,20
 3/0PERATION

MUTUALLY EXCLUSIVE FUNCTIONS

1. When self-test (Test 01) is active, all other counter functions are inactive with the exception
of the resolution function. If any key is pushed when the counter is in self-test, the test is
exited.

2. The power meter function is terminated whenever BAND 1, 2 or 4 is selected.

3. The source lock function is terminated when the reset function is activated.

4. The counter is not able to phase lock a source and take power readings at the same time.
For the source lock and power meter functions, the most recently activated function will override
the other function. For example, if the power meter function is on, and then the source lock
function is activated, the power meter function is then turned off.

SIGNAL MEASUREMENTS WITH THE 575B/578B

AUTOMATIC FREQUENCY MEASUREMENTS

To measure the frequency of a CW signal, apply the signal to input connector that corresponds
to the frequency being measured and select the appropriate band. The counter will then proceed
to automatically find the signal, measure it and display the measured frequency.

MULTIPLE SIGNAL MEASUREMENTS

In actual microwave environments there are often multiple signals present. In a multi-signal
environment the counter will automatically find and measure the largest signal, as specified by
amplitude discrimination.

In Band 3, the counter can also measure signals other than the largest signal present. This is
accomplished by setting frequency limits around the desired signal. Figure 3--6 shows an example
of the frequency limits feature.
INPUTPOWER
(dBm)

6 6.3 6.6

~
DISPLAYED
FREQUENCY

Figure 3--6. Frequency Limits.

3--21
 . . . . 2.Z.2.~!~.Z§~ .

If the signals shown in Figure 3,6 are applied to Band 3 of the counter, it will automatically
find the signal at 6 GHz since it is the largest signal. If it is desired to measure the signal at
6.3 GHz, set the low frequency limit at 6.2 GHz and the high frequency limit to 6.4 GHz. This
will prevent the counter from seeing either the signal at 6 GHz or the signal at 6.6 GHz.

SOURCE LOCKING
The EIP 575B and 578B Source Locking Microwave Frequency Counters offer the capability of
source locking the frequency on almost any electronically tunable signal source over a frequency
range from 10 MHz to 110 GHz.

Typical applications involve source locking the output from a microwave sweeper, such as one
of the Wiltron 6600 Series of Sweep Generators. Regardless of the particular sweeper, the technique
is basically the same. A sample of the signal to be controlled is applied to the appropriate band
on the counter. The COURSE TUNE OUTPUT from the counter is applied to the external
sweep input to the sweeper and the 0 LOCK OUTPUT from the counter is applied to the FM
input on the sweeper, as shown in Figure 3,7. Select the appropriate band on the counter. On
the sweeper, select the external sweep mode and enable the FM modulation input.

5758/5788 COUNTER
---- o
o
----g
•

COURSE JO LOCK
TUNE OUTPUT
OUTPUT

EXTERNAL
SWEEP FM
INPUT ~,

CI
---
CI

ggg g gggo
CI CI
CI
~, INPUT

CI CICICI
CICICI
CI
CI
CI
CI
g g
CI
CI
CI
CI
CI :---+----t--
.......
-

WILTRON 6600 COUPLER

Figure 3,7. Source Locking Setup.

With the equipment set up as described above, source locking over the entire range of the
sweeper can be achieved by simply entering the desired frequency.

For example, to lock the sweeper at 10 GHz:

LOCK GHz

PRESS: 0 GJ GJ 0
FREQ

At this point, the sweeper should be locked to 10 GHz. On the front panel of the counter,
the LCK annunciator should be lit and 10 GHz should be displayed.
 3/0PERATION

For further information on using the source locking capability with most of the common microwave
sweepers, please contact EIP directly or your local sales representative.

OPTIONS
MILLIMETER--WAVE MEASUREMENTS

The 578B offers an extended frequency option (Option 06) that allows operation between 26.5
GHz and 110 GHz. This band is designated as Band 4 on the counter and is divided into four
subbands as shown below.

Band Frequency Range

41 26.5 - 40 GHz
42 40 - 50 GHz
43 60 - 90 GHz
44 90 - 110 GHz

To perform measurements in this range, the Model 590 Frequency Extension Cable Kit and one
or more of the remote sensors are required.

5758/5788 COUNTER

MILLIMETER-WAVE
INPUT

Figure 3--8. Equipment Setup for Band 4 Operation (Option 06)

CAUTION
Before connecting the remote sensor to the frequency source, verify
that the power level is within the limits specified for the sensor.

Static discharge or ground loops can damage or destroy the diode

in a remote sensor. ALWAYS connect the LO cable to the counter
first, then touch the shield to the body of the sensor before connecting.

Be sure that the counter and waveguide port to which the sensor
connects have a common ground. If in doubt, connect with a ground
strap before connecting the remote sensor.

3--23
 . . . . .?Z.??/~.Z§~ .

Operation

To operate the counter in one of the Band 4 frequency ranges, connect the short cable (supplied
with the Frequency Extension Cable Kit) from the lower Band 4 output jack on the front panel
to the Band 3 input. Connect the long cable from the upper Band 4 jack to the remote sensor.
Select the desired band. Connect the remote sensor to the frequency source. The counter will
automatically measure and display the frequency of the source.

ERROR MESSAGES
When an error occurs, the error number is displayed. The probable cause of each error is listed
below.

OPERATOR ERRORS

01 Illegal key sequence

02 A resolution number was not entered
03 A band number was not entered; or the number entered was too large.
04 No power reading in current band
05 Frequency limit high >20.5 GHz, 27 GHz (578B)
06 (Freq Limit Hi) , (Freq Limit Lo) < 100 MHz
07 Frequency limit low <.95 GHz (575B/578B)
09 Illegal test mode key sequence
10 Illegal DAC key sequence
11 Illegal multiplier key sequence
12 Service request condition input error (GPIB only)
13 Option not installed
14 Phase lock frequency out of range of current band
15 Cannot store phase lock information. Counter not phase locked.
16 Storage register 0 does not exist
17 Illegal bandwidth key sequence
19 Function not allowed in 0.1 resolution
20 Access to this function protected by memory protect switch
40 DAC table error, cannot find YIG frequency
41 Calibration frequency error
42 Signal not found

COUNTER ERRORS

30 EEPROM error Unable to write to EEPROM

31 Check sum error Section 1 PROM A105, U14 (2020215,02)
32 Check sum error Section 2 PROM A105, U13 (2020215,02)
33 Check sum error Section 3 PROM A105, U17 (2020215,02)
31, 32, or 33 Check sum error A105, U14 (2020480,01)

3,24
 4/PROGRAMMING

PROGRAMMING
The GPIB interface of the 575B/578B counters is fully compatible with the IEEE 488,1978
standard. With the GPIB interface, the counter can respond to remote control instructions and
can output measurement results via the IEEE 488,1978 Bus interface. At the simplest level, the
counter can output data to other devices such as the HP 5150A Thermal Printer. In more
sophisticated systems, an instrument controller can remotely program the counter, trigger
measurements, and read results.

GPIB FUNCTIONS IMPLEMENTED

The GPIB interface function subsets implemented are as follows:

Interface Function Subset Description

Source Handshake SH1 complete capability
Acceptor Handshake AH1 complete capability
Talker T5 basic talker, serial poll, Talk only
mode, unaddress if MLA
Listener L3 basic listener, Listen Only mode,
unaddress if MTA
Service Request SR1 complete capability
Remote Local RL1 complete capability
Device Clear DC1 complete capability
Device Trigger DT1 complete capability

REMOTE/LOCAL FUNCTION

When the counter changes from LOCAL to REMOTE or vice-versa, all the stored information
is retained. The counter will operate in the same state as it was before the change. The only
exception is when the counter is in the TEST mode, the TEST function is automatically terminated.
When the counter is in REMOTE and LOCAL LOCKOUT is not active, the RESET key on
the front panel keyboard acts as the return to local key.

4,1
 . . . . .?z.??.(?.Z?~ .

DE~CECLEARFUNCTION

When the GPIB command DEVICE CLEAR or SELECTED DEVICE CLEAR is received, the
counter will revert to its power on state as listed below:

Display Active
Band 3 Selected
Resolution 0
Fast Passive
Offset Active (Offset set to O)
Power Meter Passive
Frequency Limit High set to default
Frequency Limit Low set to default
Coarse Tune Active
Test Passive (Clear Test Functions)
Exponent Zero (Output Format)
Service Request Passive

DEVICE TRIGGER FUNCTION

When the GPIB bus command DEVICE TRIGGER is received, the counter will initiate a new
frequency reading cycle. The converter will not be reset. If the counter does not have a
converter lock, the DEVICE TRIGGER will not be performed until a converter locked condition
exists.

GPIB ADDRESS SELECTION

This counter employs a software selectable GPIB address which is stored in non.. volatile memory.
To verify the GPIB address, select Test 90: the counter will display the current GPIB address.
Press the Clear Display key to exit Test 90 without changing the GPIB address.

To change the GPIB address, select Test 90 followed by the desired GPIB address see Figure
4.. 1 for a list of allowable GPIB address codes}.
For example:
TEST CLEAR
PRESS: 0 0 0 0 8 0
DISPLAY
to select GPIB address 20.

Since the GPIB address is stored in non.. volatile memory, the counter will always default to the
last GPIB address selected.

The GPIB address selection is also used to put the counter in the Talk Only or Listen Only
mode. To put the counter in the Listen Only mode simply set the address to 41 or higher,

TALK ONLY MODES

The TALK ONLY modes enable the counter to output data to other devices on the bus, such
as a printer, without the need of an instrument controller, To use the counter in a TALK ONLY
mode, enter the GPIB address corresponding to the desired mode of operation.

4.. 2
 4/PROGRAMMING

The counter can be put in four different modes of operation in the Talk Only mode. The
following is a list of the address settings for entering these modes.

Address Mode of Operation

32 Continuous output determined by SAMPLE RATE control. Exponent in scientific format.
33 Continuous output - fast active. SAMPLE RATE control inactive. Exponent in scientific
format.
34 Continuous output determined by SAMPLE RATE control. Exponent in zero output format.
35 Continuous output - fast active. SAMPLE RATE control inactive. Exponent in zero output
format.

NOTE
In the Talk Only or the Listen Only mode, the address of
the counter is always automatically set to decimal o.

GPIB INSTRUCTION FORMAT

<OP CODE> <NUMBER> < TERMINATOR>

OPERATION CODE or OP CODE can take any of the following formats:

<LETTER> <LETTER> or <LETTER> <DIGIT>

Example: FH (Frequency Limit High) or B3 (Band 3)

The NUMBER portion of the statement can take the form of any of the following:

<SIGN> <DIGIT STRING>

Example: --2457
<SIGN> <DIGIT STRING> . <DIGIT STRING>
Example: --3.483

NOTE
Spaces within the <OP CODE> and <NUMBER> portions of
the instructions are always ignored.

The TERMINATOR allows the operator to choose the scale of an input number as well as
implement special functions.

TERMINATOR = G/M/K/H/D/P/C/L

0, M, K, H, represent GHz, MHz, kHz, and Hz respectively

D = dB, P = clear data, (equivalent to "clear data" key on keyboard)
C = clear display (equivalent to "clear display" key on keyboard)
L = phase lock (equivalent to "0 LOCK" key on keyboard)

4--3
 . . . . ~.Z~.~.I?.Z§~ .

FORMAL DEFINITION OF INSTRUCTIONS

<OP CODE> <NUMBER> <TERMINATOR>
<OP CODE> ::= <LETTER> <LETTER> I <LETTER> <DIGIT>
<NUMBER> ::= <SIGN> <DIGIT STRING> I
<SIGN> <DIGIT STRING> . <DIGIT STRING>
NULL
<TERMINATOR> ::= G I M I K I HID I PIC I L I NULL
<SIGN> ::= + I ' I NULL
<DIGIT STRING> :: = <DIGIT> <DIGIT> <DIGIT> .
<LETTER> ::= A I B I C I DIE I FIG I H I I I J I K I LIM I N I 0 I P IQ
RISITIUIVIWIXIYIZI
<DIGIT> :: = 1 I 2 I 3 I 4 I 5 I 6 I 7 I 8 I 9 I 0

PROGRAM CODE SET

DISPLAY

DA ' Display Active Output Frequency Reading to Front Panel and Bus
DP , Display Passive: Output Frequency Reading to Bus only
DN ' Display Normal

BAND

B1 ' Band 1: 10 Hz ' 100 MHz

B2 ' Band 2: 10 MHz ' 1 GHz
B3 ' Band 3: 1 GHz ' 20 GHz (Model 575B / 26.5 GHz for Model 578B)
B4 ' Band 4: (Model 578B / Option 06)

RESOLUTION

R.1 ' Resolution .1 = 0.1 Hz (Band 1 only)

RO ' Resolution 0 = 1 Hz
R1 ' Resolution 1 = 10 Hz
R2 ' Resolution 2 = 100 Hz
R3 ' Resolution 3 = 1 kHz
R4 ' Resolution 4 = 10 kHz
R5 ' Resolution 5 = 100 kHz
R6 ' Resolution 6 = 1 MHz
R7 ' Resolution 7 = 10 MHz
R8 ' Resolution 8 = 100 MHz
R9 ' Resolution 9 = 1 GHz

4,4
 4/PROGRAMMING

MEASUREMENT FUNCTIONS

FA -- Fast Active (Ignore sample rate control)

FP -- Fast Passive (Terminates FA)
RS -- Reset Basic Counter and Converter. Take a new reading after reset.
HA -- Hold Active
HP -- Hold Passive

DATA MANIPULATION FUNCTIONS

FO -- Frequency Offset. Take a new reading after data entry if counter not in hold.
PO -- Power Offset. Take a new reading after data entry if counter not in hold.
OA* - Offset Active:
-- Add Frequency Offset to Frequency Reading
-- Add Power Offset to Power Reading if Power Meter Function is active
OP -- Offset Passive (Terminates OA)
ML -- Multiplier. Multiplies frequency readings by an integer number.

* In Start-up condition, although OA is Active, Frequency and Power Offsets are programmed
to zero.

POWER METER

PA -- Power Meter Option Active. Initiate a new gate.

PP -- Power Meter Option Passive (Terminates PA)

FREQUENCY LIMITS

FH -- Frequency Limit High. Basic counter and converter will be reset after data entry.
FL -- Frequency Limit Low. Basic counter and converter will be reset after data entry.

SOURCE LOCKING FUNCTIONS

PF -- Phase lock frequency. Counter attempts to phase lock after data entry.
PL -- Initiates phase lock sequence. Equivalent to PHASE LOCK key on keyboard,
BW -- Bandwidth. Selects phase lock loop 'bandwidth.
ST -- Store. Equivalent to STORE key on keyboard.
RC -- RECALL. Equivalent to RECALL key on keyboard.
CA -- Coarse tune active Source lock process operates normally.
CP -- Coarse tune passive. Source lock process bypasses coarse tune process for faster source
lock time.

4--5
 . . . . ~.Z~.§./~.Z§.~ .

SELF.-TEST FUNCTION

TA ' Test Active

TP , Test Passive (clear test function)

DATA FORMAT

EZ ' Exponent Zero

ES ' Exponent Scientific

DATA OUTPUT

BR ' Output both frequency and power readings

FR ' Output frequency readings only
PR ' Output power readings only

SERVICE REQUEST

SR ' Service request enable

DAC OPTION

DC ' Select DAC option

DESCRIPTION OF AVAILABLE COMMANDS

DISPLAY

DA ' Display Active ' Outputs readings to both front panel and GPIB bus.
DP , Display Passive, Outputs readings to GPIB bus only. It will decrease the cycle time of
the counter
DN ' Display Normal, Resets display only; used for clearing error messages on the display.
Cannot be used after verifying preprogrammed data such as Frequency Offsets or Frequency
Limits. This OPCODE affects only the display.

BAND

B1 ' Selects Band 1.

B2 ' Selects Band 2.
B3 ' Selects Band 3.
B41 ' Selects Band 41. See Option 06.
B42 ' Selects Band 42. See Option 06.
B43 ' Selects Band 43. See Option 06.
B44 ' Selects Band 44. See Option 06.

4,6
 4/PROGRAMMING

RESOLUTION

R.1 thru
R9 ' Resolution .1 thru 9 ' Picks the front panel resolution from .1 Hz to 1 GHz. Also
chooses gate time which is related to resolution .1 Hz = 10 sec, 1 Hz = 1 sec, 10 Hz =
100 msec, 100 Hz = 10 msec and 1 kHz to 1 GHz = 1 msec.

MEASUREMENT FUNCTIONS

FA ' Fast Active ' Causes the counter to go into the fast cycle mode of operation. In this
mode, the front panel sample rate/hold control is inactive and the fastest sample rate is
attained. The counter will not go into the Fast Active mode of operation if Hold Active is
enabled.
FP , Fast Passive, Terminates FA.
RS ' Reset Basic Counter and Converter ' Reacquires input signal and takes a new reading.
Has the same function as manual reset button.
HA ' Hold Active ' The counter stops taking readings and the last frequency and power
readings are displayed and held. The counter can be directed to take one reading when it is
in this mode by sending Device Trigger or Selected Device Trigger GPIB bus command to
the counter. It will also update the reading if the RS mnemonic is received.

HP,Hold Passive, Terminates HA.

DATA MANIPULATION FUNCTIONS

FO ' Frequency Offset, Enables entry of frequency offsets. (1 Hz resolution available.) A

new gate will be initiated after data entry if counter is not in HOLD.
PO ' Power Offset ' (See Option 02).
OA ' Offset Active ' Add frequency offset to frequency readings. Add power offset to power
readings if power meter function is active.
OP , Offset Passive ' Does not add frequency and power offset to readings.
ML ' Multiplier, Enables entry of a 2,digit frequency readings multiplier. The multiplier must
be an integer between 00 and 99. The results are to 1 kHz resolution. A new reading
will be initiated after the data entry if the counter is not in HOLD. If the results of the
multiplications are larger than or equal to 999.999,999,000 GHz, the counter will output
999.999,999,000 GHz to the bus if asked to output readings.

POWER METER

PA ' Power Active (See Option 02).

PP , Power Passive (See Option 02).

4,7
 . . . . ?Z?..~f~.Z§~ .

FREQUENCY LIMITS

FH -- Frequency Limit High -- Enables entry of frequency limit high (10 MHz resolution
available). The basic counter and converter will be reset after the data entry.
FL -- Frequency Limit Low -- Enables entry of frequency limit low (10 MHz resolution
available). The basic counter and converter will be reset after the data entry.

SELF.-TEST FUNCTIONS

TA -- Test Active -- Enables the counter to perform the selected test function by entering
TA followed by two digits. When Test 05, 08, 09, or 10 is active and the counter is being
asked to output data, the data that is displayed on the front panel is the data being output.
The output data format is as follows:
XXXXXXXXXXXXCRLF
X = alpha-numeric
CR = carriage return
LF = line feed
For detailed descriptions of tests 01 through 09 and test 11, see the section on Keyboard
Controlled Circuit Tests.
TP -- Test Passive -- Terminates test function.

SOURCE LOCKING FUNCTIONS

PF -- Phase lock frequency. Enables entry of phase lock frequency to 10 kHz resolution if
phase lock frequency is above or equal to 50 MHz, and 2.5 kHz resolution if it is below 50
MHz. The counter will attempt to phase lock after data entry.
PL -- Initiates phase lock sequence. The counter will attempt to phase lock to the frequency
specified in the phase lock frequency register.
BW -- Bandwidth. Enables the selection of the phase lock loop bandwidth. To select the
desired bandwidth, input BW followed by one decimal digit. The digit has to be between 0
and 3 inclusively.
BWO = automatic loop bandwidth selection.
BWI = 500 Hz loop bandwidth.
BW2 = 2 kHz loop bandwidth.
BW3 = 10 kHz loop bandwidth.
In BWO, the counter will try to close the 'phase lock loop in 10 kHz, 2 kHz and 500 Hz
loop bandwidths, sequentially. It will select the first bandwidth in which it is able to close
the phase lock loop.
ST -- Store. Enables the storage of the current phase lock frequency along with other
important information related to phase locking that frequency. To store the current phase
lock frequency, input ST followed by one decimal digit between 1 and 9 inclusively. The
function can be activated only after the counter has been phase locked.
RC -- Recall. Enables the recall of the information in one of the storage registers. Inputting
RC, followed by one decimal digit between 1 and 9 inclusively, and terminating the string by
the terminator L, enables the counter to attempt to phase lock to the frequency stored in
 4/PROGRAMMING

one of the storage registers. Terminating the string by the terminator P will clear that
storage register.
CA . . Coarse tune active. Source lock process operates normally. The counter first goes
through the coarse tune process to move the signal source's output to within 5 MHz of the
desired frequency. Then the phase lock process takes over to attempt to close the phase lock
loop. In this mode, the counter will perform properly even if the coarse tune output of the
counter is not connected to the signal source.
CP . . Coarse tune passive. Source lock process bypasses the coarse tune process for faster
source lock time. This mode can be used if the source's output is close to the desired
frequency.

DATA FORMAT

EZ Exponent Zero . . output format.

ES Exponent Scientific . . output format.

DATA OUTPUT

BR Output both frequency and power readings. (See section on output data format.)
FR Output frequency readings only. (See section on output data format.)
PR Output power readings only. (See section on output data format.)

DAC OPTION

DC . . Enables the DAC option. Enter DC followed by two decimal digits which correspond
to the location of the most significant digit in the three digits desired. To turn the DAC
option off, input DCOO or DCP.
DCOO turns DAC option off
DC02 selects 1 Hz digit
thru
DC12 . . selects 100, 10, and 1 GHz digits.

SERVICE REQUEST

SR . . Service Request Enable . . Enables the counter to send Service Request to the bus when
a certain event has taken place in the counter. To enable the function, input SR followed
by two decimal digits. The two digits are the decimal equivalent of the content of the eight
bit status register. More than one bit of the status register can be set.

To disable the Service Request function, input SROO.

NOTE
Even when the Service Request function is disabled, the
Service Request status byte will still be continuously altered
to reflect the internal states of the counter.

4.. 9
 . . . . ~.Z~.§../~.Z§~ .
Decimal equivalent: 32 16 8 4 2 1

input buffer empty measurement available

not phase locked --_..I counter searching

phase locked - - - - -... frequency reading register

overflow (multiplier too
large)

SERVICE REQUEST MASK

The counter can be instructed to send an interrupt, by setting the SRQ line on the GPIB, when
any ORed combination of the bits in the status byte are set. This is done by sending the counter
a service request mask.

For example, to instruct the counter to generate an SRQ on measurement available OR input
buffer empty, send the following service request mask:

OUTPUT 719;"SR33"

This would tell the counter to generate an SRQ whenever bit-O or bit,5 of the status byte are
set. Since bit-O corresponds to measurement available and bit,5 corresponds to input buffer
empty, the counter would generate an SRQ whenever either the input buffer was empty or a
measurement was available.

The following items should be included in any program using the SRQ feature:

1. Tell the counter when to generate an SRQ. That is, tell the counter which events should
generate an SRQ. This is done using the SRQMASK command.

2, Tell the controller to monitor the SRQ line on the GPIB. The SRQ is a maskable interrupt
and the controller needs to know if it should respond to the interrupt.

3. Tell the controller what to do when it receives an SRQ interrupt.

4. Serial Poll the counter after an SRQ is generated to clear the interrupt. When the counter
generates an SRQ, it sets bit-o in the status byte. Serial polling the instrument clears the SRQ
bit and allows the instrument to generate a new SRQ upon the next occurrence of the conditions
specified in the SRQ Mask.

5. It may also be necessary to clear the SRQ register in the controller. Consult your manual
on the controller for more information on clearing the SRQ register in the controller.

4,10
 4LPROGRAMMING

The following program, written on a HP--9826, demonstrates how to use the SRQ feature to
obtain a valid measurement from the counter.

10 ASSIGN @COUNTER TO 719 Assigns 719 to address variable

!
The number 7 is the GPIB interface
!
and 19 is the counters GPIB address
!
20 REMOTE @COUNTER Place counter in Remote
!
30 OUTPUT @COUNTER; "SR01" Send SRQ mask to counter
!
40 ENABLE INTR 7;2 Enable interrupt in controller
!
50 ON INTER 7 GOTO FLAG Tell controller how to handle interrupt
!
60 WAITING: Label !
70 PRINT"WAITING FOR VALID MEASUREMENT"
80 GOTO WAITING
90 FLAG: PRINT " * * * * * SRQ RECEIVED * * * * *"
100 ENTER @COUNTER;FREQ ! Input Frequency from counter
110 PRINT "FREQ = ";FREQ ! Print Frequency
120 S2 = SPOLL(@COUNTER) ! Clear SRQ bit in counter
130 STATUS 7,4;S ! Clear SRQ bit in controller
140 OUTPUT @COUNTER;"SROO" ! Turn off SRQ mask in counter
150 OFF INTR 7 ! Turn off interrupt in controller
160 END ! Program end

To demonstrate this program, set up counter with no signal applied and start the program
running. The Controller should continually print out "Waiting for measurement." Then apply
a signal. As soon as the Counter finds the signal and counts it, the controller will print out the
frequency of the signal.

DATA OUTPUT FORMAT

To output measurement results, the 575B/578B transmits the following string of characters:

Position 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Format
EZ (Exponent Zero) b ± D D D D D D D D D D D D E 0 CR LF
ES (Exponent SCI)* ±DDDDDDDDDDDDDEDffiU
Power** b b b b b b b b b b ± D D D . D CR LF
Freq. + Power
FREQ in EZ mode: b ± D D D D D D D D D D D D E 0, b b b b b b b b b b ± D D
D. D CR LF
FREQ in ES mode: ± D D D D D D D D D D D D D E D, b b b b b b b b b b ± D D
D. D CR LF

4--11
 . . . . ?Z?..~f~.Z§~ .

When the counter is in Test 05, 08, 09, or 10, the output will reflect the data on the display.
The format is as follows:

XXXXXXXXXXXXCRLF.
h = Blank
D = Digit
X = Alpha-numeric Character
CR = Carriage Return
LF = Line Feed
* In Exponent scientific one digit represents the position of the decimal point. Exponent
digit can be either 0, 3, 6, 9.
** For power data, the output resolution is fixed at 0.1 dB.
Under different output modes, the following counter outputs can be expected by a listener.

Counter
Output Operating
Mode Mode Output
SR PA FREQ = PWR
PP FREQ
TAO1 FREQ
FR PA FREQ
PP FREQ
TAO1 FREQ
PR PA PWR
PP -999.9
TAO1 -999.9
SR, FR, orPR TAOS, 08, 09, or 10 Data on front panel
display

PROGRAM EXAMPLES
The following measurement conditions are set by addressing the counter to listen and then
sending the following character string:

-83 . R2 F079.36M FH12.3G FL4.26G FA DP-

-- --
BAND3---
RESOLUTION 100 Hz
FREQUENCYOFFSET79.36 MHz
T
J
FREQUENCYLIMIT HIGH 12.3 GHz
FREQUENCYLIMIT LOW4.26GHz
FAST ACTIVE -
DISPLAY PASSIVE
 4/PROGRAMMING

READING A MEASUREMENT
To read a measurement from the counter to a controller, the counter must first be addressed
to talk and the controller to listen. The EIP counters use two different modes. The HOLD
ACTIVE or HA mode takes one reading and then waits for a RESET command or a device
trigger GPIB Command. In this condition the counter is sent a RESET or device trigger and
(when addressed to talk) a new reading is output to the bus. The counter will hold that particular
reading on the display until another RESET command or device trigger command is received.
The second mode is HP or HOLD PASSIVE. In this mode, data is read out in a normal bus
fashion. The display is automatically updated according to the sample rate chosen. In this condition,
successive readings can be output without generating a RESET or device trigger command each
time.

INPUT SPEED
It takes a specific amount of time for the counter to process the input data (error checking,
formatting, changing the mode of operation, etc.). To prevent the data rate of the bus from
slowing down while the counter is processing input data, the data is accepted as soon as it is
available on the bus and is temporarily stored in memory. The size of the storage memory is
100 characters.

The users of the GPIB interface need to be aware of the difference between accepting data and
complying with it. If the counter is asked to output a reading before it has finished processing
the input data, the output will be in error if the operator makes the assumption that the counter
is in the mode that was just programmed. To prevent this, sufficient programmed delays must
be provided, or use must be made of the counter's Service Request status byte. See Service
Request (SR) command description.

4--13
[§ 00 B ?z??!?.z§.~ __ __ _._ __.__ _.__ ___ _. .

This Page Intentionally Left Blank

 5/0PERATIONAL VERIFICATION TESTS

SECTION 5
OPERATIONAL VERIFICATION TESTS
INTRODUCTION
This section contains test procedures that are used for verifying proper operation of the counter.
Although these tests are not comprehensive, they do insure, to a high degree of confidence,
that the instrument is operating properly. The tests can be useful for incoming inspection and
should be performed after any servicing to insure proper operation of the counter. All tests can
be performed without removing the instrument covers. A test report form that can be used to
provide a test record is included at the end of this section. If the test application is especially
critical in nature, more extensive testing of the counter may be required. See the performance
verification test section in the service manual.

Because of the high cost and specialized nature of frequency sources above 40 GHz, testing
above this frequency is not covered. Also, for the purpose of operational verification tests, simulated
pulsed signals are used in Bands 1 and 3.

EQUIPMENT REQUIREMENTS
Equipment required for the operational verification tests on the EIP 575B or 578B counter is
listed in Table 5,1. The critical parameters are the minimum use specifications required for the
performance of the procedures, and are included to assist in the selection of alternative equipment.
Satisfactory performance of alternative items should be verified prior to use. All applicable
equipment must bear evidence of current calibration. For some of the following tests, an EIP
578B counter is used to source lock the microwave sweeper, thus providing a stable source for
testing. This combination may be replaced by a frequency synthesizer.

5,1
 . . . . ~.z~.?(~.z§~ .

Table 5--1. Equipment Requirements.

Critical Recommended
Description Parameters Manufacturer Model
Synthesized Function 10 Hz to 10 MHz Wavetek 23
Generator
Sweep Generator 10 MHz to 26.5 GHz (40 GHz Wiltron 6668A
for Option 06)
Sweep Generator 3 GHz to 18 GHz Wiltron 6635A
Source Locking Counter 10 MHz to 26.5 GHz EIP 578B
Spectrum Analyzer 3 GHz to 18 GHz Hewlett Packard 8566A
Power Meter 10 MHz to 60 GHz Hewlett Packard 437B
Power Sensor 10 MHz to 18 GHz Hewlett Packard 8481A
(-20 to +10 dBm)
Power Sensor 100 MHz to 26.5 GHz Hewlett Packard 8485A
(-25 to +20 dBm)
Power Sensor 26.5 GHz to 40 GHz Hewlett Packard R8486A
(-25 to +20 dBm)
Oscilloscope DC to 100 MHz Tektronix 475
Power Splitter 10 MHz to 26.5 GHz Hewlett Packard 11667B
Directional Coupler 950 MHz to 18 GHz Narda 4222-16
Directional Coupler 18 GHz to 26.5 GHz Narda 4017B-
10
Remote Sensor 26.5 GHz to 40 GHz EIP 091

50 n Termination Pamona 4119-50

SOURCE LOCKING SETUP

In some of the following tests, the EIP 578B counter is used to source lock the sweep generator
to provide a stable frequency source for testing the 575B/578B counters.

The source locking setup, described below, is not limited to locking the Wiltron sweeper. It can
be used to source lock almost any electronically tunable signal source over a frequency range
of 10 MHz to 110 GHz. For more information on source locking the Wiltron 6600 series of
sweep generators, request Application Bulletin 10 from our sales representative in your area or
directly from EIP.

Regardless of the particular sweeper, the procedure for source locking is basically the same. A
sample of the output from the sweeper is applied to the appropriate band on the EIP 578B
counter. For the setup shown in Figure 5--1, a power splitter provides the sample. The COARSE
TUNE OUT connector from the 578B counter is connected to the external sweep input on the
sweeper. The 0 LOCK OUT connector on the 578B counter is connected to the FM input
on the sweeper. The FM modulation on the sweeper is enabled and the sweeper is set to the
external sweep mode.

5--2
 5/0PERATIONAL VERIFICATION TESTS

5758/5788 COUNTER

COURSE Rf LOCK
TUNE OUTPUT
OUTPUT

EXTERNAL
SWEEP FM

---
INPUT INPUT

CI CI CI CI CICICI CI CI CI CI

ggg g gggo
CI CI CICICI CI CI
g g
CI CI
CI ....---+-<:
OUTPUT
WILTRON 6600 HP116678
POWER SPLITIER

Figure 5,1. Source Locking Setup.

With the equipment set up as described above, source locking over the entire range of the
sweeper can be achieved by entering the desired frequency.

For example, to lock the sweeper at 10 GHz:

LOCK GHz

PRESS: 0
FREQ
GJ GJ 0
At this point, the sweeper should be locked to 10 GHz, the LCK annunciator on the counter
should be lit, and 10 GHz should be the displayed frequency. In the following tests, the output
frequency from the sweeper is controlled directly by the EIP 578B counter, while the power is
controlled at the sweeper.

OPERATIONAL VERIFICATION TEST PROCEDURES

BAND 1 RANGE AND SENSITIVITY TEST (10 Hz to 10 MHz)

Description

This test verifies counter operation from 10 Hz to 10 MHz at 25 mVrms (70.7 mV p'p into 50
Q). The oscilloscope is used to set signal levels.

Equipment

Synthesized function generator (Wavetek 23)

Oscilloscope (Tektronix 475)
 · ~.Z~.~.I?Z§!? .

Test Setup 1
SYNTHESIZED
FUNCTION
GENERATOR
OSCILLOSCOPE

.-1::0
5758/5788 COUNTER
.......
00000
D
000
~--------------------~------------------CH1 •

Figure 5,2. Band 1 Range and Sensitivity Test Setup (10 Hz to 10 MHz).

Procedure

1. Connect equipment as shown in Figure 5,2.

2. Set the counter to Band 1 and select resolution 2.
3. Set the output frequency from the synthesizer to 10 Hz.
4. Using the oscilloscope, set the output signal level from the synthesizer to 25 mVrms
(70.7 mV p'p into 50 Q).
5. Apply the 10 Hz signal to the counter, verify proper reading, and record the results.
6. Repeat steps 3, 4, and 5 at 100 Hz, 1 kHz, 10 kHz, 100 kHz, 1 MHz, and 10 MHz.

BAND 1 RANGE AND SENSITIVITY TEST (20 MHz to 100 MHz)

Description

This test verifies counter operation from 20 MHz to 100 MHz at 25 mVrms (70.7 mV p'p into
50 Q). The oscilloscope is used to set signal levels.

Equipment

Sweep generator (Wiltron 6668A)

Source locking counter (EIP 578B)
Power splitter (Hewlett Packard 11667B)
Oscilloscope (Tektronix 475)
50 Q termination (Pamona 4119,50)

5,4
 5/0PERATIONAL VERIFICATION TESTS

Test Setup 2
r - - -- - -- -- -- - - - -- - - - ------- ---- - - - ---- - - - -- --
Source Locking Setup
(See Figure 5-1)
5788 COUNTER

COURSE J({ LOCK

TUNE OUTPUT
OUTPUT

.. _..
OSCILLOSCOPE
EXTERNAL
SWEEP FM 5758/5788 COUNTER
INPUT INPUT

Iii i !II!, II! _. I ~

POWER 50 n
SPLITTER TERMINATION

Figure 5,3. Band 1 Range and Sensitivity Test Setup (20 MHz to 100 MHz).

Procedure

1. Connect equipment as shown in Figure 5,3.

2. Set the 575B/578B counter to Band 1 and select resolution 3.
3. Using the EIP 578B counter, source lock the sweeper at 20 MHz.
4. Using the oscilloscope, set the output signal level from the synthesizer to 25 mVrms (70.7
mV p'p into 50 Q).
5. Apply the 20 MHz signal to the 575B/578B counter, verify proper reading, and record the
results.
6. Repeat steps 3, 4, and 5 at 50 and 100 MHz.

BAND 2 RANGE AND SENSITIVITY TEST

Description

This test verifies counter operation from 10 MHz to 1 GHz at ,15 dBm. The power meter is
used to set signal levels.

Equipment

Sweep generator (Wiltron 6668A)

Source locking counter (EIP 578B)
Power meter (Hewlett Packard 437B)
Power sensor (Hewlett Packard 8481A)
Power splitter (Hewlett Packard 11667B)

Procedure

1. Connect equipment as shown in Figure 5,4.

2. Set the 575B/578B counter to Band 2 and select resolution 3.

5,5
 . . . . ~.Z~.~.I?Z§~ .
r - - -- - - - --- - - -- - - - --- - - --- - - --- -- --- - - --- - ---
Source Locking Setup
(See Figure 5-1)
5788 COUNTER

COURSE J?f LOCK

TUNE OUTPUT
OUTPUT
POWER METER
EXTERNAL 5758/5788 COUNTER
SWEEP o
INPUT o 0

'---+--- -L. _

POWER POWER
SPLITTER SENSOR

Figure 5,4. Band 2 Range and Sensitivity Test Setup.

3. Using the EIP 578B counter, source lock the sweeper at 10 MHz.
4. Using the power meter, set the output signal level from the sweeper to ,20 dBm.
5. Apply the 10 MHz signal to the counter, verify proper reading, and record the results.
6. Repeat steps 3,4, and 5 at 100 MHz, 250 MHz, 300 MHz, 400 MHz, 500 MHz, 600
MHz, 700 MHz, 800 MHz, 900 MHz, and 1 GHz.

BAND 3 RANGE AND SENSITIVITY TEST

Description

This test verifies counter operation from 1 GHz to 20 GHz (26.5 GHz for the 578B counter).

Equipment

Sweep generator (Wiltron 6668A)

Source locking counter (EIP 578B)
Power meter (Hewlett Packard 437B)
Power sensor (Hewlett Packard 8485B)
Power splitter (Hewlett Packard 11667B)
j- - --- - -- - ---- --- -- - - -- - --- --- - --- ---- -- - -- --
Source Locking Setup
(See Figure 5-1)
5788 COUNTER

COURSE J?f LOCK

TUNE OUTPUT
OUTPUT
POWER METER
EXTERNAL 5758/5788 COUNTER
SWEEP FM
INPUT INPUT

~-+-----------_-I-_--------

POWER POWER
SPLITTER SENSOR

Figure 5,5. Band 3 Range and Sensitivity Test Setup.

5,6
 5/0PERATIONAL VERIFICATION TESTS

Procedure

1. Connect equipment as shown in Figure 5,5.

2. Set the counter to Band 3 and select resolution 3.
3. Using the EIP 578B counter, source lock the sweeper at 1 GHz.
4. Using the power meter, set the output signal level from the sweeper to ,30 dBm.
5. Apply the 1 GHz signal to the 575B/578B counter, verify proper reading, and record the
results.
6. Repeat steps 3, 4, and 5 at 3 GHz, 6 GHz, 10 GHz, and 12.4 GHz. Then, at a signal
level of ,25 dBm, test at 15 GHz, 18 GHz, and 20 GHz. For Model 578B counters only: at
signal level of ,20 dBm, test also at 22 GHz, 24 GHz, and 26.5 GHz.

BAND 3 AMPLITUDE DISCRIMINATION TEST

Description

This test verifies that the counter will measure accurately the larger of two signals differing in
amplitude by 10 dB or more.

Equipment

Sweep generator (Wiltron 6635A)

Sweep generator (Wiltron 6668A)
Spectrum analyzer (Hewlett Packard 8566A)

---
Power splitter (Hewlett Packard 11667B)

aaa a aaa a a a a
a a g g g -
a a a
aaa g gggo a a -- 5758/5788 COUNTER

S WEEP GENERATOR 1 POWER

SPLITTER
• [;] 58 ~ ?TIl I
(COM8INER) I
1
I
I ~ I I
I
- - - - - - - - - - - _.1

SPECTRUM ANALYZER

---
I
I
I
I
aaa a aaa a aaa
I
I
o §§
g gggo gg g
a a aaa a
aaa
aaa
- I _ _ _ _ _ _ _ _ _ _ _ _ _ ...J
aaa &..

SWEEP GENERATOR 2

Figure 5,6. Band 3 Amplitude Discrimination Test Setup.

Procedure

1. Connect equipment as shown in Figure 5,6.

2. Set signal generator 1 to 3.0 GHz at 0 dBm and set signal generator 2 to 3.1 GHz at +6
dBm.
3, Using the spectrum analyzer, adjust the generator power levels so that the signal amplitude
difference is 10 dB.

5,7
 . . . . ?Z?.~./~.Z?!?. .

4. Verify that the counter correctly measures the frequency of the higher power signal source.
5. Repeat steps 2, 3, and 4 at 6 and 6.1 GHz, at 12 and 12.1 GHz, and at 17.9 and 18 GHz.

BAND 4, SUBBAND 1 RANGE AND SENSITIVITY TEST (578B Option 06 Only)

Description
This test verifies counter operation from 26.5 GHz to 40 GHz at ,25 dBm.

Equipment
Sweep generator (Wiltron 6668A)
Power meter (Hewlett Packard 437B)
Power sensor (Hewlett Packard R8486A)
Remote sensor (EIP 091)
Cable kit (EIP 590)

---
SWEEP GENERATOR

IL _
5758/5788 COUNTER
o
0
•
.......
POWER METER

.
•. ··.0

I
: REMOTE
I SENSOR
I

L ~__- - - I - - - - - - - - - - - - - - - - - - =
POWER
SENSOR

Figure 5,7. Band 4 Range and Sensitivity Test Setup (Model 578B, Option 06).

Procedure

1. Connect equipment as shown in Figure 5, 7.

2. Set the counter to Band 4 and select resolution 3.
3. Set the output frequency from the sweeper to 26.5 GHz.
4. Using the power meter, set the output signal level from the sweeper to ,25 dBm.
5. Apply the 26.5 GHz signal to the remote sensor, verify proper reading, and record the
results.
6. Repeat steps 3, 4, and 5 at 30, 35, and 40 GHz.

5,8
 5/0PERATIONAL VERIFICATION TESTS

OPERATIONAL TEST RECORD

MoDEL ~SEroALNO. DATE __

TEST ACTUAL SPECIFICATIONS

BAND 1 RANGE AND SENSITIVITY TEST 10 Hz TO 100 MHz

INPUT SENSITIVITY 10 Hz _ 25 mVrms
100 Hz _
1kHz _
10 kHz. _
100 kl-lz _
1 MHz _
10MHz, _
20MHz _
50MHz _
100MHz _
BAND 2 RANGE AND SENSITIVITY TEST 250 MHz TO 1 GHz
INPUT SENSITIVITY 10 MHz _ ,20 dBm
100MHz _
250 MHz _
300 MHz, _
400MHz _
500 MHz, _
600 MHz, _
700 MHz, _
800 MHz, _
900MHz _
1 GHz _
BAND 3 RANGE AND SENSITIVITY 1 GHz TO 20 GHz (26.5 GHz)
INPUT SENSITIVITY 1 GHz __ ,30 dBm
3GHz _
6GHz _
10GHz, _
12.4 GHz _
15GHz _ ,25 dBm
18GHz _
20GHz _
578B ONLY 22 GHz, _ ,20 dBm
24GHz, _
26.5 GHz

5,9
[§ 00 B ?Z??L?.Z§l:.L _ . __ _ _._ __ _ __.._._ .

OPERATIONAL TEST RECORD (Continued)

TEST ACTUAL SPECIFICATIONS

BAND 3 AMPLITUDE DISCRIMINATION TEST

CONDITIONS: Fl > F2 BY 15 dB OR MORE
Fl F2
3 GHz 3.1 GHz 10 dB
6.1 GHz 6 GHz _
12 GHz 12.1 GHz _
18 GHz 17.9 GHz _
BAND 4--1 RANGE AND SENSITIVITY TEST 26.5 GHz TO 40 GHz
(578B, OPTION 06)
INPUT SENSITIVITY 26.5 GHz --25 dBm (typical)
30GHz _
35GHz, _
40 GHz
 INDEX
Numbers

o Lock Key, 3.. 13

A

Automatic Frequency Measurements, 3..21

B.W. Key, 3.. 13

Band 1 Range and Sensitivity Test (10 Hz to 10 MHz), 5..3
Band 1 Range and Sensitivity Test (20 MHz to 100 MHz), 5.. 4
Band 2 Range and Sensitivity Test, 5..5
Band 3 Amplitude Discrimination Test, 5..7
Band 3 Range and Sensitivity Test, 5..6
Band 4, Subband 1 Range and Sensitivity Test (578B Option 06 Only), 5..8
Band Selection, 3..6
Bandwidth Key, 3..13

c
Certification, iii
Clear Data/Clear Display Keys, 3..5
Connectors, 3.. 1, 3.. 4
Counter Control Functions, 3..6
Counter Error Messages, 3..24
Counter Identification, 2.. 4
Customer Suggestion Form, iii

DAC Key, 3.. 15

Data Manipulation Functions, 3..9
Declaration of Conformity, 1..9

1-1
 . . . . ~.Z~.~./~.Z§!? .

INDEX (Continued)
E

Error Messages, 3.. 24

Exit Tests, 3.. 20

Factory Service, 2.. 4

Frequency Limits, 3 8
Frequency Offset, 3 9
Front Panel Controls, Connectors, and Indicators, 3.. 1
Fuse Replacement, 2.. 2

Gate Time Selection, 3.. 6

Identification, 2.. 4
Incoming Operational Checkout, 2.. 3
Indicators, 3 1
Inspection, 2 1
Installation, 2.. 2
Instrument Default Settings, 3.. 4

Keyboard, 3.. 5

Manual Change Information, iii

Measurements, 3.. 21, 3.. 23
Messages, 3.. 24
Millimeter.. wave Measurements, 3.. 23
Multiple Signal Measurements, 3.. 21
Multiply Function, 3.. 10
Mutually Exclusive Functions, 3.. 21
mX±B, 3.. 11

1.. 2
INDEX (Continued)
o
Operating Conditions, 2,1
Operational Test Record, 5,9
Operational Verification Test Procedures, 5,3
Operational Verification Tests, 5,1
Operator Error Messages, 3,24
Options, 3,23
Options and Accessories, 1,8

Periodic Maintenance, 2,4

Phase Lock Frequency, 3,11
Phase Lock Key, 3,13
Power Meter Keys, 3,16
Power,on Tests, 3,17
Preparation for Use, 2,2

RCL Key, 3,14

Rear Panel Controls and Connectors, 3,4
Recall Key, 3,14
Reset/Local Key, 3,5
Resolution Selection, 3,6

s
Safety, iv
Service Information, 2,4
Shipping Instructions, 2,4
Signal Input, 3,3
Signal Measurements, 3,21
Source Locking, 3,22
Source Locking Functions, 3,11
Source Locking Setup, 5,2
Specifications, 1,2
Status Display, 3,2
Storage, 2,1
Store Key, 3,14

1-3
 . . . . ?z??.(?.z§~ .

INDEX (Continued)
T

Test Functions, 3 17
Test Selections, 3 17

u
Units (MHz/GHz) Keys, 3.. 5
Unpacking and Initial Inspection, 2.. 1

v
Ventilation, 2.. 1
Voltage Selection, 2.. 2

w
Warranty, iii