O.

OO2Hz T O 5MHz

FUNCTION GENERATOR
M O D E L 5400ACR3 S f R I A L No3a

OPERATING AND MAINTENANCE

MANUAL

KROHN-HITE CORPORATION
580 Massachusetts Ave., Cambridge, Mass. 02139 U.S.A.

0
C 1973KROHN-HIT€ CORPORATlON
 SECTION 1
GENERAL DESCRIPTION

1.1 iNTRODUCT1ON

The Krohn-Hite M o d e l 5400A Function Generator provides sine, square, t r i a n g l e ,

positive r a m p and negative r a m p functions over the frequency range of 0 . 0 0 2 Hz to
5 M f i . An a u x i l i a r y fixed amplitude s q u a r e wave is provided, independent of the
other functions, for synchronous gating, blanking, etc. Control of s y m m e t r y is
provided for ail functions, and allows for pulse or sawtooth operation, T h e m a x i -
mum output amplitude i s 30 volts p - p open c i r c u i t o r 15 volts across 50 o h m s .
The output attenuator has a range of 70 dB, and has a vernier capable of a n addi-
tional attenuation of 30 dB. E x t e r n a l l y generated signals may be used t o synchro-
nize the frequency of the g e n e r a t o r , to F - M the g e n e r a t o r output about a c e n t e r
frequency, o r to s w e e p the g e n e r a t o r frequency over a range of at least 1 0 0 0 : 1 .
The output signal may be offset by & l o volts by means of a f r o n t panel control.

T h e function g e n e r a t o r is c a r e f u l l y inspected, aged, and adjusted before shipment,

and should be r e a d y f o r operation w h e n i t is unpacked. If it appears t o have been
damaged in shipment, m a k e a c l a k w i t h the-carrier a n d notify Krohn-Hite irn-
mediate 1y.

Study this manual carefully before o p e r a t i n g the function generator. The o p e r a t i n g

i n s t r u c t i o n s give information on applications and interfacing the i n s t r u m e n t with
other equipment.

1.2 SPECIFICATIONS

Sine wave, s q u a r e wave, t r i a n g l e , positive r a m p , negative r a m p . P o s i t i v e and

negative p u l s e s w i t h adjustable widths f r o m lOOns to lOOOs are a l s o obtainable on
the square wave function.

Frequency Range

0 . 0 0 2 Hz to 5 MHz i n 9 r a n g e s .

Frequency Control

Single t u r n d i a l calibration w i t h single l i n e a r s c a l e f r o m 2 t o 50 in Hz and a 9-band

pushbutton multiplier switch.

1
Function G e n e r a t o r 5400A(R}

BAND M U L T IPL IER F R E Q U E N C Y RANGE P U L S E WIDTH

0.00 1 0.OOZHz - 0 . 0 5 HZ 10s - 1000s

0.01 0.02Hz - 0 . 5 - 1s - 100s
0. 1 0.2Hz -5Hz 0.15 - 10s
1 Zfi -~OHZ IOms -Is
10 2OHz -500- lms -0 . Is
100 ZooHz -5kH~ 0. l m s -lOms
lk 2 k H ~- 5OkHz lOus - l m s
1Ok 20kHz - 5OOkHz lus - 0 . lms
lOOk 200kHz - 5MHz 0. lus - lOus

Frequency Aceurocy (Symmetrical waveforms)

1% of full scale f o r bands I t h r u 8; 2 % of full scale on band 9.

Frequency Stobility

IO minutes 0.05%
2 4 hours 0.25%
Vs line 0 . 0 1 % f o r 10% line change
Jitter (cycle to cycle) 0. 0 2 5 %

External Frequency Lontrol (VC)

Range: 1OOO:l.

Input Impedance: 5000 ohms for D. C. to 1 MHz bandwidth.

M a x i m u m Control Voltage: I O Volts (*25 Volts may be applied without damage

to circuitry).

Response Time: Approximately 1 m i c r o s e c o n d

Tuning Control

D i a l Mode: F r e q u e n c y m a y be e x t e r n a l l y c o n t r o l l e d above and below dial setting.

External Mode: Dial is e l e c t r i c a l l y r e m o v e d f r o m c i r c u i t . Frequency is con-

t r o l l e d by e x t e r n a l positive voltage of 10 m i l l i v o l t s t o 10 Volts.

Main Outpu~

Waveforms: Sine, square, triangle, positive r a m p and negative r a m p . Pulse

obtainable by adjusting Symmetry control while on squarewave function.

Maximum Output: 30 Volts p-p open c i r c u i t ; 15 V o l t s p - p across 50 ohms.

Impedance: Constant 50 ohms ~+:2%&

Amplitude Control: Eight position pushbutton a t t e n u a t o r calibrated in open c i r c u i t

peak volts and lOdB s t e p s from OdB to -70dB plus an infinite r e s o l u t i o n vernier.

2
 calibrated i n peak volts. Attenuator a c c u r a c y f. 2dB. Minimum output less than
5 millivolt p-p.

D. C . Component: N o r m a l z e r o except for r a m p . At maximum output d r i f t is l e s s

than Srnv/OC. Dri ft reduced i n proportion t o pushbutton attenuator s e t t i n g .

F r e q u e n c y Response: Sine wave, .05dB from 0.005Hz to 100kHk; 3dB t o 5MHz.

Sine W a v e Distortion: Less than 0. 5% f r o m 0.002Hz to 100kHz; l e s s than 3 % t o

5MHz.

Hum and Noise

0.02% of maximum output. Reduced in proportion t o d B a t t e n u a t o r s e t t i n g .

Time Symmetry

Sine, Square, T r i a n g l e waveforms, 99% from 0.002Hz t o lOOkHz w i t h S y m m e t r y

control i n NORM position.

Ramp Duration

4770w i t h S y m m e t r y control in the NORM position. Adjustable 1 % to 9970 b y means

of dial and Symmetry control.

Symrnetrppos dumtion Control

Single turn potentiometer and switch f o r adjusting positive duration of pulse and
positive slope of triangle. S y m m e t r y ratio, adjustable 100: 1. W i t h c o n t r o l on,
negative d u r a t i o n of pulse and negative slope of t r i a n g l e are adjustable by means
of tuning dial. NOTE: All s p e c i f i c a t i o n s apply w i t h the S y m m e t r y - p o s d u r a t i o n
contr ol in the NORM positi,on.

E xternal Syn cheoni zation

2 Volts rms external s i n e w a v e signal w i l l lock g e n e r a t o r over a p p r o x i m a t e l y

i 5 % range w i t h slight changes in distortion and amplitude. Input impedance
' 10K ohms.

Squore Waves and Pulse

R i s e and fall time less than 30ns, total a b e r r a t i o n s less than 5% w i t h 50 ohm
matched load.

Triangle and Ramp Linearity

9 9 % f r o m 0.005Mz to 100kHz; 95% f r o m lOOkHz to IMHz; 90% f r o m IMHz t o 5MHz.

R a m p fall time l e s s than 3011s.

D.C. Offset

O n f r o n t panel, *lo V open c i r c u i t , 5 V across 50 o h m s , Stability S r r ~ v / ~ CReduced

.
in proportion to pushbutton a t t e n u a t o r setting. M a x i m u m peak signal plus offset
*15 V o l t s .

3
Function G e n e r a t o r 5200A(R}

Auxiligry Square Wave Output

5 V o l t s p - p open circuit. 2. 5 Volts p - p across 50 ohms, 50 ohms impedance.

Bise and fall time less t h a n I5ns. Total aberrations less than 5% w i t h 50 ohm
matched load.

Ambient Temperature Range

0 t o 5OoC.

Co ntro Is

F r o n t panel contains frequency d i d , frequency multiplier puchbuttons, amplitude

pushbuttons, amplitude vernier, p o w e r s w i t c h , waveform switch, tuning switch,
Symmetry-pos duration, d. c. offset. Rear panel contains line switch, d. c. l e v e l
a d j . , symmetry adj.

Terminals (BNC Connectors)

(Front only on bench model, rear only on rack model. ) External frequency control,
main output and auxiliary output; External synchronization, on rear of all models.

Powe r Requ i rements

105-125 or 2 1 0 - 2 5 0 volts single phase 50-4OOHz 40 w a t t s .

Dimensions and Weights

Bench Model 5400A: 8 5/8" wide, 5 1/4" high, 14 1,!Z1l deep, 12 lbs. /6kgs, net:
18 lbs. /9kgs. shipping.

Rack Mounting Model 5400AR: 19" wide, 5 1/4" high, I 4 1/211 deep, I6 Ibs. /8kgs,
net; 2 2 lbs. a lOkgs shipping.

4
 ,SECTION 2
OPERATION

2.1 POWER REQUIREMENTS

The Model 5100A Function Generator m a y be used e i t h e r with a 115 volt, 50-200 Hz
line o r w i t h a 230 volt, 50-400 Hz line. The l i n e voltage can be s e l e c t e d by opera-
tion of the L I N E switch on the rear panel. N h e n the line i s 115 volts the fuse re-
q u i r e d is 0 . 4 a m p e r e ; f o r 230 volt operation, the fuse should be 0.2 a m p e r e .

2.2 OPERATING CONTROLS AND CONNECTORS

2.2. I Front Panel Controls

P O W E R - on-off switch and pilot light.

F R E Q U E N C Y HZ o r neg duration : single turn d i d w i t h 5-to- 1 v e r n i e r d r i v e ,

graduated 2 to 50 for corrtifluous control of frequency, with a 9 position pushbutton
m u l t i p l i e r switch, X.001 t o XlOOK in d e c a d e s . With the SYMMETRY-pos d u r a t i o n
control in the NORM position, the d i a l frequency times the multiplier equals the
output frequency. W i t h the SYMMETRY-pos d u r a t i o n control in use, the dial con-
trols negative pulse duration, sawtooth negative slope, positive r a m p delay, o r
negative r a m p duration.

-:
WAVEFORM 5-position switch for selecting negative ramp, positive r a m p , sine,
triangle, or square wave.

AMPLITUDE: 8-button switch for attenuating OdB (15V) through -70dB (4. 75mv)
in 10-dl3 increments, a n d infinite r e s o l u t i o n vernier for fine adjustment t o an addi-
tional -30 dB.

TUNING- 2-position switch used for selecting i n t e r n a l generator controlled (DIAL)

o r e x t e r n a l l y controlled (EXT tV) frequency.

DC OFFSET: switched p o t e n t i m e t e r permitting d c o f f s e t of signal by f 10 volts (or

f 5 volts w i t h 5 0 - o h m load).

SYMMETRY : pos duration-switched potentiometer f o r controlling positive pulse

duration, positive sawtooth slope duration, negative rXWIp delay, o r positive r a m p
duration. W i t h this control in t h e NORM position, w a v e f o r m s are s y m m e t r i c a l .
When switched on, independently a d j u s t s part of the w a v e f o r m period and dial
adjusts remaining portion.

5
Function Gene rator 5400A( R)

2.2.2 R e a r P a n e l Controls

-
Line : 2-position switch for s e l e c t i n g 115 or 230 volt operation.

SYM ADJ : 1 0 - t u r n potentiometer f o r adjusting symmetry of w a v e f o r m s .

D C O U T P U T LEVEL: potentiometer for a d j u s t m e n t of dc output l e v e l .

2.2.3 Connectors

O U T P U T : auxiliary s q u a r e wave output. Front only on 5 4 0 0 4 rear o n l y on 5100AR.

V C I N P U T : F r o n t only on 5400A, rear only on 5400AR.

E X T E R N A L S Y N C : Rear, all models.

2.3 PERFORMANCE

2.3.1 General

The output f r e q u e n c y of the generator is d e t e r m i n e d by its tuning mode of

operation-whether i t s f r e q u e n c y control is internal, or is determined by the use
of an external drive. With the TUNING switch in the DIAL position, the f r e q u e n c y
is d e t e r m i n e d by the dial and m u l t i p l i e r setting, o r if an e x t e r n a l voltage is ap-
plied t o the VC I N P U T , the frequency m a y be v a r i e d about the dial s e t t i n g , W i t h
the TUNING switch in the E X T , + V position, the dial is r e m o v e d f r o m the c i r c u i t ,
and the output f r e q u e n c y depends upon the amplitude of a positive voltage applied
to the V C I N P U T , In all w a v e f o r m positions, the auxiliary square wave c a n be
taken f r o m the 'L connector, The phase relationship of the v a r i o u s w a v e f o r m s
is shown in Figure 2.

2.3.2 Arnpli tudc

The A M P L I T U D E c o n t r o l s affect o n l y the main O U T P U T . The generator w i l l

provide the peak open circuit output voltage given on the push buttons with the
vernier in the maximum c l o c k w i s e d i r e c t i o n . In s e l e c t i n g output amplitude, use
the l o w e s t value that includes the a m p l i t u d e you want. For instance, if you require
1 volt, p r e s s the I. 5 volt button, and adjust the v e r n i e r for an output of 1 volt.
The vernier s c a l e gives approximate open c i r c u i t peak amplitude values.
Since the d c output level, the dc offset, and the amplitude v e r n i e r are all at the
input of the output amplifier, t h e i r settings are affected b y the a c t i o n of the
attenuator, which is at the output of the amplifier. The a t t e n u a t o r provides an
impedance of 50 o h m s a t all s e t t i n g s . If the dc l e v e l plus the peak value of the
s i g n a l e x c e e d s the pushbutton setting, the output signal w i l l b e clipped or d i s t o r t e d .
Thus the output should not e x c e e d 15 volts peak ac plus dc ori the OdB position,
1.5 volts on the -20dB position, etc.

6
 #- - TRIANGLE

, ..

- .-

0 - POSITIVE RAMP

O
- - t - t I - 7 ;... .. u NEGATIVE RAMP
........... .-

..... c.......... I I

0
. . - 1 i AU X I LIARY
I SQUARE WAVE

Figure 2 . Phase Relationship of Output Signals

2.3.3 Symmetry and Duration Control

Symmetry c o n t r o l on the Model 5 4 0 0 A i s not l i k e t h e s y m m e t r y control in most

other g e n e r a t o r s . Usually, the s y m m e t r y control offsets a n o r m a l l y s y m m e t r i c a l
s i g n a l by varying both portions of t h e signal simultaneously, i n c r e a s i n g t h e t i m e
of one portion and d e c r e a s i n g t h e time of the other. In the Model 5400A, when the
SYMMETRY-pos d u r a t i o n control i s in the NORM position, the w a v e f o r m s are
s y m m e t r i c a l ; w h e n the control is switched on, it controls half t h e waveform period,
w h i l e the f r e q u e n c y d i a l c o n t r o l s the o t h e r half, The duration of e a c h h a l f of the
waveform c a n be v a r i e d o v e r a I:100 range, the specific d u r a t i o n depending u p o n
the multiplier setting, F o r instance w i t h the m u l t i p l i e r s e t at XIOOK, the positive
half of a s q u a r e w a v e can be s e t to 1 0 0 nanobeconds by m e a n s of the S Y M M E T R Y -
pus d u r a t i o n control, while t h e negative half can be s e t t o 10 m i c r o s e c o n d s by
m e a n s of the f r e q u e n c y dial. Conversely, t h e negative half can be s e t to 100 nano-
seconds while the positive half c a n be s e t to 10 m i c r o s e c o n d s . The frequency can
be calculated as follows:

I
Frequency =
( p o s duration) f (neg duration)

F o r the latter case:

1
Frequency
+
I x 1 0 - 7 , ~ ~ 100 x 10-7 s e c

Frequency : 9 9 0 0 0 Hz

7
Function G e n e r a t o r 5 4 0 0 A ( R )

W h e n the t r i a n g l e w a v e f o r m is used, the duration controls can be used t o g e n e r a t e

a sawtooth-the S Y M M E T R Y - p o s d u r a t i o n control f o r the positive slope, and the
f r e q u e n c y dial for t h e negative slope.

W i t h the positive ramps the S Y M M E T R Y - p o s duration control d e t e r m i n e s r a m p

duration while the f r e q u e n c y d i a l d e t e r m i n e s r a m p delay. W i t h the negative r a m p ,
t h e frequency dial d e t e r m i n e s d u r a t i o n w h i l e t h e SYMMETRY-pos duration c o n t r o l
d e t e r m i n e s ramp delay.

The dial graduations can be u s e d to approximate duration, as follows:

F o r the f r e q u e n c y dial-
1
duration in seconds =
2 x dial setting x m u l t i p l i e r

F o r the SYMMETRY-pos duration control-

control scale
duration in seconds = multiplie I

2.3.4 External Synchronization

An external synchronizing signal can be u s e d t o lock the generator signal t o a n o t h e r

frequency reference. T h e S Y N C INPUT impedance is 10 K ohms. A 2 vrms sine
wave signal applied t o the S Y N C INPUT connecto-r on the rear panel w i l l l o c k the
generator t o a source within f 5 percent of t h e dial frequency with s o m e increase
in distortion. As synchronizing voltage is increased, the locking range increases
l i n e a r l y - a IO v r m s input w i l l provide a locking range of $: 30 percent, with con-
siderable increase in distortion. If a dquare wave is used as t h e synchronizing
signal, the s i n e output w i l l be c o n s i d e r a b l y d i s t o r t e d , and the locking range w i l l
increase linearly f r o m *5 percent for a 4 volt peak t o peak s y n c input t o 20 *
percent for a 20 volt peak to peak synch input. T h e g e n e r a t o r will synchronize
on a harmonic of the dial frequency, w i t h some distortion.

2.3.5 Moduloting the Output Frequency

With the T U N I S s w i t c h i n the DIAL position, the indicated frequency can be

modulated by the application of a s i g n a l to the V C I N P U T connector. The range of
modulation extends f r o m 1/1000 of the m a x i m u m frequency obtainable on a p a r t i -
cular multiplier s e t t i n g t o the maximum frequency of the multiplier setting, A
positive voltage w i l l increase the f r e q u e n c y above the dial setting, w h i l e a negative
voltage w i l l d e c r e a s e t h e frequency below t h e d i d setting. A n applied voltage of
2 volt will change the frequency b y 1 Hz x Multiplier, or I dial division, For
example, it may be n e c e s s a r y to produce a sine w a v e , varying in f r e q u e n c y
linearly from 20 t o 40 Hz and back, at the rate of 2 Hz. Set the g e n e r a t o r fre-
quency t o 30 X1, and apply a t r i a n g l e at 2 Hz, amplitude 4 volts peak to peak. The
+
s a m e effect can be obtained by offsetting the t r i a n g l e d r i v e to 0 to 4 volts, and
setting the generator dial t o 20 X I . W i t h the g e n e r a t o r d i a l s e t at 20 X1, a 0 to t 4
volt square pulse would switch the output from 20 to 40 Hz,

8
2.3.6 External Frequency Control

With the TUNING s w i t c h in the E X T t V position, a positive voltage applied to the

VC I N P U T c a n b e used to c o n t r o l output frequency to a ratio of at least 1OOO:l.
T h e dial is electrically removed f r o m the c i r c u i t , A t 10 v d c level w i l l provide
the maximum output frequency normally obtainable for a given m u l t i p l i e r setting.
The r e l a t i o n s h i p between voltage and frequency is:

f = 5Evc x Multiplier

That is, with t h e m u l t i p l i e r s w i t c h i n the X 1 K position, I00 m i l l i v o l t s g i v e s 500 Hz,

1 volt 5 kHz, and 10 volts 50 kHz. Notice that with t h e multiplier in the X. 001
position, IO0 m i l l i v o l t s g i v e s 0005 Hz, well below the d i a l range. At t 10 volts
~

frequency accuracy is typically within 1 percent ( r e f e r r e d to the above formula),

but m a y be off by as much as 1 5 percent at levels below IO0 millivolts. Frequency
Linearity, however, is within 0 . 5 percent o v e r the e n t i r e IOO0:I range. Maximum
accuracy is obtained when all i n t e r n a l dc l e v e l s have been optimized. At v e r y l o w
V C l e v e l s , d i s t o r t i o n can be minimized by a d j u s t m e n t of the SYM A D J IO-turn
potentiometer on the rear panel. The VC c i r c u i t c a n take a d r i v e of up to * 2 5 volts
without d a m a g e e

A negative voltage applied to the V C I N P U T will stop oscillation, and a dc l e v e l will

a p p e a r on the output. If the negative d r i v e voltage is greater than -2 volts, t h e
output l e v e l will settle at the positive pe& of the triangle, o r at the negative peak
of the s i n e wave o r squxekwave. The ramps w i l l settle at ground, or the value of
the dc offset, If the negative drive is less than -2 volts, the dc level on the output
is not predictable.

2.3.7 External VC und Duration Controls

When the SYMMETRY-pos duration c o n t r o l is on, an e x t e r n a l V C level will control

the d u r a t i o n of t h e negative portion of t h e signal. W h e n the TUNING s w i t c h is i n
the E X T -tV position, d u r a t i o n can be calculated as follows:

1
Duration in seconds
10 x V C voltage x multiplier

The V C input affects only the operation of the tuning d i d ; it does not affect the
SYMMETRY -pos duration control.

9
F u n c t i o n C-cnt!r a t o r 5 4 0 0 A ( R )

SECTION 3
INCOMING INSPECTION A N D CHECKOUT

3.1 INTRODUCTION

The f o l l o w i n g p r o c e d u r e should be used to verify that t h e generator is operating

within s p e c i f i c a t i o n s , both for incoming inspection and f o r routine servicing. T e s t s
m u s t be made w i t h all c o v e r s in place and the p r o c e d u r e g i v e n below s h o u l d be
followed i n sequency. F a m i l i a r i z e yourself w i t h t h e initial s e t u p and o p e r a t i n g
p r o c e d u r e s g i v e n in Section 2.

3.2 EQUIPMENT REQUl RED

(a) Oscilloscope having d i r e c t coupled h o r i z o n t a l and v e r t i c a l amplifier w i t h

lOmv/cm s e n s i t i v i t y and bandwidth of at l e a s t 30 MHz, Tektronix type 545 or equal
w i t h 1A5 plug-in unit.

(b) F r e q u e n c y counter capable of measuring 1 Hz to 10 MHz and period f r o m

1 second t o 1000 seconds,

( c ) AC Voltmeter, Ballantine Type 3 2 3 o r equal (k270t o 5 MHz).

(d) C a l i b r a t e d voltage source, o r r e g u l a t e d D C supply and digital voltmeter

0 to 10 v o l t s .

( e ) D i s t o r t i o n m e t e r , Hewlett Packard Type 333A.

3.3 PROCEDURE

After a l l o w i n g the i n s t r u m e n t t o w a r m up f o r 30 minutes, s e t the controls to the

following positions:

F R E Q U E N C Y Hz 25 XI00
T U N I N G S W IT CH Dial
AMPLITUDE OdB (15V) v e r n i e r f u l l CW
WAVEFORM Sine
DC OFFSET Off
S Y M M E T R Y -pos duration Norm

10
3.3.? Waveforms

Connect the output of the g e n e r a t o r t o t h e o s c i l l o s c o p e w i t h no load. O p e r a t e the

W A V E F O R M s w i t c h t h r o u g h a13 positions to c h e c k for the p r e s e n c e of all w a v e -
forms. ’

3.3.2 Amplitude Contml

S e t t h e W A V E F O R M s w i t c h to sine. Rotate t h e a m p l i t u d e vernier c o u n t e r c l o c k w i s e ;

the signal a m p l i t u d e should d i m i n i s h b y m o r e than 30dB. Rotate t h e vernier t o the
f u l l c l o c k w i s e position. Set t h e AMPLITUDE to OdB (15V), and connect a 50 o h m
l o a d a c r o s s the output of t h e g e n e r a t o r . The voltage should d r o p by half (6dB).
R e m o v e load. Operate the A M P L I T U D E pushbuttons in sequence, s t a r t i n g a t
15 volts and going to 4. 75 m i l l i v o l t s , reading the output a m p l i t u d e on the s c o p e w i t h
the s c o p e VOLTS/CM control in t h e c a l i b r a t e d position. T h e s e values can be con-
firmed by t h e use of the acvm. R e m e m b e r that t h e scope and g e n e r a t o r are reading
peak-to-peak volts, while the acvm r e a d s in r m s volts.

3.3.3 bC OFfset

O p e r a t e the D C OFFSET control w i t h amplitude v e r n i e r CCW; control should be

capable of offsetting s i g n a l b y &IO volts open c i r c u i t . T u r n off the offset control.

3.3.4 Symmetry and Duration Controls

Change t o square wave. T u r n on the SYMMETRY-pos d u r a t i o n c o n t r o l , and o p e r a t e

it t h r o u g h its range. It should v a r y the p o s i t i v e half of the s q u a r e wave over a
ratio of 1OO:l. Then t u r n the f r e q u e n c y dial through its range. The n e g a t i v e
portion of the square w a v e should v a r y o v e r a range of 100:1. R e t u r n t h e
SYMMETRY-pos duration c o n t r o l to NORM.

3.3.5 Auxiliary Square Wave

Connect the oscilloscope and the 5 0 - o h load to the auxiliary s q u a r e w a v e output.

The a m p l i t u d e should be 2. 5 volts p e a k - t o - p e a k .

3.3.6 DC Level

Connect t h e d c v m t o the output of the g e n e r a t o r . It should be p o s s i b l e t o s e t t h e

l e v e l t o z e r o by m e a n s of the DC O U T P U T L E V E L p o t e n t i o m e t e r on the rear panel.

3.3.7 Frequency Accuracy

Change the WAVEFORM to sine, and c o n n e c t the frequency c o u n t e r t o the g e n e r a t o r

output. Check the f r e q u e n c y w i t h the dial a t 2, 2 5 and 50 in all f r e q u e n c y bands.
Frequency accuracy should be within 1 p e r c e n t of full s c a l e on bands 1 through 8,
and 2 p e r c e n t of f u l l scale on band 9 (XIOOK).

I1
Function G e n e r a t o r 5 1 0 0 A ( R )

3.3.8 External Frequency Control

With the f r e q u e n c y s e t to 2 5 X100, connect the c a l i b r a t e d voltage s o u r c e to the

+
V C I N P U T . Set the VC voltage t o I volt; the output f r e q u e n c y should change to
3 kHz. Change t h e V C voltage t o - 1 volt. The output f r e q u e n c y should c h a n g e t o
approximately 2 k H z .

+
Flace t h e TUNING s w i t c h i n the E X T fV position. Apply 10 volts t o the V C
I N P U T ; the output frequency should be 5 kHz f 50 Hzs Apply 100 m i l l i v o l t s to the
V C INPUT; t h e output frequency should be approx. 50 Hz. Disconnect the VC
input and s e t the TUNING s w i t c h to DIAL.

3.3.9 Sine Distortion

W i t h t h e W A V E F O R M s w i t c h on sine, and the dial s e t to 25 X100, check the sine

d i s t o r t i o n using the distortion meter. D i s t o r t i o n should be less t h a n 0. 5 percent.

12
 SECTION 4
CIRCUIT DESCRIPTION

4.1 SYSTEM OPERATION

vc 0
lkPU1

t2P I\ OUTPUT

li"

Figure 3 . Model 5 4 0 0 A B l o c k Diagram

A simplified block diagram of t h e f u n c t i o n generator i s s h o w n in F i g u r e 3 . The

basic oscillating s y s t e m i s comprised of the square w a v e g e n e r a t o r and the i n t e -
g r a t o r , with frequency controlled by the VC a m p l i f i e r s . This system generates
square and triangle waves, which a r e f u r t h e r p r o c e s s e d to form the sine and r a m p
functions. The f r e q u e n c y control d i d o r the V C input s e t s a positive voltage at
the input of the -VC a m p l i f i e r . This a m p l i f i e r produces a negative output p r o p o r -
tional t o its input; t h e negative output is applied to the 2 R resistive network, setting
a negative level at the input to the integrator, and charging the integrator feedback
c a p a c i t o r C. Capacitor C is one of t h e m u l t i p l i e r b a n d s w i t c h c a p a c i t o r s . T h e
output of the - V C amplifier a l s o d e t e r m i n e s the + V C amplifier output level, which
is applied t o the collector of g a t e Q332. When a332 is t u r n e d on by the square
wave generator it d r i v e s the R r e s i s t i v e network, and the integrator c h a r g e s the
feedback c a p a c i t o r in the opposite direction. W h e n the square wave s h u t s off
gate Q 3 3 2 , the cycle r e p e a t s .

T h e output of the integrator is a triangle, which is used as the t r i a n g l e function, as

the i n p t t o the s i n e shaper, and r e g e n e r a t i v e l y as t r i g g e r for the s q u a r e w a v e
g e n e r a t o r . T h e s q u a r e w a v e g e n e r a t o r output is u s e d t o p r o v i d e both the m a i n and
auxiliary square w a v e outputs.
Function G e n e r a t o r 54OUA(R)

The sine and square w a v e s a r e f e d through amplifiers t o t h e W A V E F O R M switch.

The triangle i s fed d i r e c t l y t o the s w i t c h and also through a s u m m i n g network,
where it i 6 added t o the square w a v e and clipped t o provide the positive and nega-
t i v e r a m p s , T h e output a m p l i f i e r i n v e r t s its input and p r o v i d e s a 5 o - o k m output
to the attenuator.

4.2 VC AMPLIFIERS AND SYMMETRY CONTROL (See Figure 4)

R414
I
-
I >TO 2R N E T W O R K

GENERATOR
SYMMETRY

F i g u r e 4. V C A m p l i f i e r s and Symmetry Control

The V C amplifiers a r e similar, both having two balanced differential stages and
e m i t t e r follower output. Both amplifiers invert; the -VC a m p l i f i e r has a gain of
- * 5 and the + V C a m p l i f i e r has a g a i n of -1, which is p r e c i s e l y maintained by the
feedback t r a n s i s t o r , Q33I. The output of the - V C a m p l i f i e r d r i v e s t h e 2 R
resistors, while the output of the t V C a m p l i f i e r d r i v e s the R resistors, t h r o u g h
gate Q 3 3 2 . W h e n 8 3 3 2 amplifier is gated on, t w i c e as m u c h c u r r e n t w i l l be p r o -
vided to the i n t e g r a t o r input as is provided b y the - V C amplifier, reversing the
charge on the integrating c a p a c i t o r .

The operation of the s y m m e t r y control s w i t c h does two things: (1) it reduces the
gain of the -k V C a m p l i f i e r to -.
5 by increasing i t s negative feedback; and (2) it
s w i t c h e s i n SYMMETRY-pos d u r a t i o n p o t e n t i o m e t e r R413, w h i c h controls a nega-
tive bias applied to the input of the + VC amplifier. T h i s means t h a t the drive for
the R r e s i s t o r s is controlled by R413, while the drive for the 2 R r e s i s t o r s i s con-
trolled by the frequency dial. The result is independent width control for the p o s i -
tive and negative duration of the output signal.

4.3 INTEGRATOR (See Figure 5)

The i n t e g r a t o r i s a negative infinite-gain a m p l i f i e r w i t h a feedback c a p a c i t o r C to

provide the i n t e g r a t i n g function. Two r e g e n e r a t i v e s t a g e s , 6 3 0 1- Q 3 0 4 and Q 3 0 6 -
Q308 provide the gain. Capacitor C is s e l e c t e d by the bandswitch.

12
 R309

FROM n
R AND 2 R >
SHAPER

TO WAVEFORM

NETWORKS
4.

A* SWITCH

TQ 21

F i g u r e 5. I n t e g r a t o r

4.4 SQUARE WAVE GENERATOR (See Figure 6 )

+22v

A TO
FROM 4: > GATE
I NTEG RATOR P332

TO 9343 (OIFF AMP) -

-
-

Figure 6. Square Wave Generator

The triangle, taken f r o m the output of the integrator, t r i g g e r s the square w a v e

generator. Q 3 4 4 and Q 3 4 3 are a d i f f e r e n t i a l pair, and Q 3 4 5 and Q346 a r e a dif-
ferential p a i r , Q 3 4 4 and Q345 f o r m a r e g e n e r a t i v e sense a m p l i f i e r w i t h a f e e d -
back path from the collector of 0345 t o t h e base of Q344. W h e n t h e peak of the
triangle r e a c h e s -10 volts, Q344 conducts, turning on Q345. As the triangle
+
voltage goes from -10 t o 1 0 volts, the voltage at the base of Q 3 4 4 is c l a m p e d to
about -0.6 volt by diode CR348. When t h e triangle reaches its p o s i t i v e peak of
-F 10 volts, the base of Q344 g o e s positive, turning off Q344 and turning off Q345.
The voltage at the base of Q 3 4 4 i s limited to +.
6 V t h i s t i m e by t h e a c t i o n of
CR349. W h e n the triangle again r e a c h e s -10 volts, the c y c l e repeats. T h e s q u a r e
w a v e f r o m Q 3 4 5 is applied t o gate Q 3 3 Z .

4.5 SQUARE WAVE AMPLIFIERS (See F i g u r e 7)

The s q u a r e w a v e developed a t the collector of Q346 i s applied t o t h e b a s e of Q 3 7 3 ,

w h i c h in t u r n d r i v e s t h e e m i t t e r of Q374.
The auxiliary square w a v e i s taken
f r o m the collector of Q374.
Function Gene r a t o r H00,4( R)

FROM ~

0344

OUTPUT

Figure 7, Square W a v e Amplifiers

A second output from Q 3 4 6 is applied to a diode bridge (CR371 t h r o u g h CR374),

through diode-connected Q371, to the base of Q372. T h e diode b r i d g e clips the
s q u a r e wave, and Q 3 7 1 p r o v i d e s t e m p e r a t u r e compensation. The signal from Q372,
which is applied t o the W A V E F O R M switch, i s 180 d e g r e e s out of phase w i t h regard
to the s q u a r e wave from Q374.

4.6 SINE SHAPER AND SINE AMPLIFIER (See Figure 8)

TO
4201 -
7 > WAVEFORM
INTEGRATOR
NETWORK P202 SWITCH

F i g u r e 8. Sine Shaper and Sine Amplifier

The sine s h a p e r c o n s i s t s of six p a i r s of diodes, each p a i r associated w i t h a voltage

divider. The function of the voltage d i v i d e r is two-fold: (1) It changes the slope of
the input signal, and (2) it s e t s the level at which the diodes clip the signal. Thus
when the triangle is applied t o the circuit, the d i v i d e r r e s i s t a n c e changes its slope
and the diodes c l i p it at six discrete increments within each 90 d e g r e e s , The
resultant a p p r o x i m a t e s a sine wave. The emitter followers Q2Ol-QZOZ s e t and
maintain the diode clamping l e v e l . T h e t h e r m a l d r i f t of 0 2 0 1 and Q202 also
cancels the t h e r m a l d r i f t of the diodes. Potentiometers RZZ1 and R229 are adjusted
to minimized distortion. The output of the sine shaper is applied to the sine ampli-
f i e r Q 2 3 1 through Q233 t o the function switch.

16
4.7 RAMP FUNCTIONS

The r a m p functions a r e developed at the function switch. The s q u a r e wave and the
triangle are added together at resistors R705 and R 7 I l . The s u m is clipped by
diodes CR701 and CR702, and the resultant is applied to the output amplifier.

4.8 OUTPUT AMPLl FI ER (See Figure 9)

FROM OUTWT

SWITCH ATTWUATOR
4508
-
F i g u r e 9. Output A m p l i f i e r

The output a m p l i f i e r consists of a balanced input amplifier Q 5 0 1 - 6 5 0 2 , a second

stage Q504-Q505, and output s t a g e Q506 through Q509. The input signal i s applied
t o the base of Q502. The collector of 8 5 0 1 d r i v e s Q505 w h i c h in turn d r i v e s output
transistors Q506 and Q507. At low frequencies 4504 is used as a constant c u r r e n t
source, allowing f o r maximum voltage swing of the output transistors. At higher
f r e q u e n c i e s additional drive signal is p r o v i d e d t o 6 5 0 4 through C509. The input
signal l e v e l is controlled bylamplitude vernier R529. Q 5 0 8 and Q 5 0 9 provide addi-
tional output capability at high signal l e v e l s .

4.9 POWER SUPPLY (See Figure 10)

-
tNPUT
R115

Rll8

-
-
1-

Figure 10. Power Supply

17
F u n c t i o n G e n e r a t o r 5.lOOA(.K)

T h e p o w e r s u p p l y provides positive and negative 2 2 volt regulated p o w e r t o dl

circuits. Z e n e r C R I 1 I i s u s e d 3 s the r e f e r e n c e in the positive supply; the negarive
s u p p l y , w h i c h i s s i m i l a r , i s r e f e r r e d t o the p o s i t i v e s u p p l y . Q l o l is a s e r i e s
r e g u l a t o r ; v a r i a t i o n s i n output voltage a r e s e n s e d b y Q l 0 6 , whose emitter voltage
i s deterrrlined b y Zener C R l 11. Q 1 0 5 p r o v i d e s t e m p e r a t u r e compensation. The
output of a 1 0 6 i s a p p l i e d to the base of Q 1 0 2 w h i c h d r i v e s Q I o l . A s h o r t c i r c u i t
f r o m f 2 2 v o l t s to g r o u n d w o u l d s h u t off the supply, providing s h o r t c i r c u i t p r o -
t e ction.

I8
 SECTION 5
MAINTENANCE

5.1 INTRODUCTION

If the function g e n e r a t o r i s not working properly, first check it a s a ''black box."

That is, check all the external controls to make c e r t a i n that it is s e t up for the
purpose intended. (The g e n e r a t o r w i l l not oscillate i f t h e tuning s w i t c h is in the
EXT +V position and no V C input is p r o v i d e d ) . Then isolate the nature of the m a l -
function. If the trouble occurs on only one frequency band, it i s m o r e t h a n likely
one of the c o n t a c t s of the bandswitch. T h e bandswitch components, except f o r RblO,
Rb 1 1 , and C602 are common to two O F m o r e bands, as shown in Table 1. F o r
other symptoms, refer to the Troubleshooting Chart, Table 2.

Table 1 . Bandswitch Components

Band # I. t 4 '3 4 5 6 #7 a 9

MULTIPLIER .001 .01 .I 1 10 100 1K !OK IOOK

C Value 5mf 5mf 5mf .047rnf .047mf 470pf 470pf 470pf 39pf

C # C607 C607 C607 C606 C606 C605 C605 C605 C602

R Value 500K 50K 5K 50K 5K 50K 5K 500 500

R# R610 R606 R604 R606 R604 RbOb Rb04 R601 R601

2R Value IM IOOK 10K IOOK 1OK lOOK 10K 1K 1K

2R # R 6 1 l R 6 0 7 R605 R607 R605 R607 R605 R602 RboZ

19
Function G e n e r a t o r 5 40 0 A( R)

T a b l e 2. Troubleshooting C h a r t

Setup: Did: 25 Attenuator : Odb and v e r n i e r C W

Multiplier: XlOO D C Offset: Off
Waveform: \ Tuning Switch: Dial
~~

Symptom Checking P r o c e d u r e Probable Cause

V u signal 1 . Check position of tuning 1. Switch should be on DIAL

N a i n and Fixed switch
3ut put s
2. P o s i t i v e and Negative 2. F u s e , Rectifier, Regulatoi
Voltage s Overload (ifl o w v o l t a g e )
(+ 22*. 5v, -22*. 5V)

3. Tuning pot center arm 3 . Tuning pot o r s w i t c h (S601)

(+ IOV*lV)

4. T e s t point M E dc voltage 4. vc loops

f 5Vk5

5. P o l a r i t y at testpoint T I 5 . Integrator
should be opposite that
at TO

6. Voltage at TO should be 6. Integrator

above t 1OV or below
- 1ov
7. Check voltage at test ?a. If TO > t lOV, and
points TO and SE S E = t 5, Integrator o r
band s w i t c h tuning
resistors

7b. If T O L t I O V , and S E = 0,
Square wave generator or
Q3 32
7 ~ .If TO 2 -IOV, and
SE = +5V, Square wave
generator or Q332

7d. If TO 2 -1OV and S E = 0,

Integrator o r bandswitch
tuning r e s is tors

?lo s i g n a l 1. Check f o r signal ( 5 V p - p ) I. Function Switch

Main output only on R 7 18 c e n t e r a r m when
R718 is maximum C W
(R718 is output a m p l i t u d e
Dot)
 Table 2 Trouble shoot C h a r t (Continued)

Symptom Checking P r o c e d u r e Probable Cause

qo signal 2. Check signal on R528 2. Output A m p l i f i e r

vlain output only (3OV P-P)
contd. )
3 . If signal on R528 is 3, Attenuator
correct

iine w a v e only I. Test point AI should be 1. Sine A m p l i f i e r (Q231,

nis sing Ovdc with v e r y small etc.)
signal. If AI d c l e v e l is
not Ovdc, level on QZ33
collector should be of
opposite polarity.

2, If sine amp appears 2. Sine shaper

normal, check the sine
shape r

4uxiliary square 1. Signal on junction of 1. Q373, Q 3 7 4

vave o n l y missing R385 and R714 should
be the s a m e as on
Q346 collector

M a i n square wave 1. Signal on Q372 e m i t t e r 1. Q371, Q372, CR371,

nis s i n g should be the s a m e as CR372, CqR373, CR374
0346 collector

3efective signal as 1. As dial is t u r n e d from 1a. Tuning potentiometer

lid i s turned 2 t o 50, dc voltage on
tuning pot c e n t e r a r m
should vary f x o m 1.9 t o
ZOvdc, and voltage on
t e s t point M E should
vary from t 0. 4 t o
10 vdc

2. If trouble is at low f r e - 2. Integrator

quency end of dial only,
check Square wave
symmetry

21
Section 6 - Calibration

SECTION 6
CALIBRATION

6.1 INTRODUCTION

The following p r o c e d u r e is p r o v i d e d for t h e calibration and adjustment of the

generator in the field, and a d h e r e n c e to this p r o c e d u r e should r e s t o r e the g e n e r a t o r
to i t s p e r f o r m a n c e specifications. If the g e n e r a t o r cannot be c a l i b r a t e d by the
p r o c e d u r e given, r e f e r to Maintenance Section 5, or consult our Factory Service
Department. The locations of test points a n d adjustable components are shown in
Figure 11.

6.2 TEST EQUIPMENT REQUIRED

(1) Oscilloscope having d i r e c t coupled horizontal and v e r t i c a l amplifier w i t h

1 r n v / c m sensitivity and bandwidth of at least 30 MHz, Tektronix type 545 o r equal
with 1A5 plug-in unit, U s e a X1 probe or shielded cable for scope input.

( 2 ) Frequency counter capable of measuring 1 H z to 10 MHz and period from

1 second to 1000 seconds.

( 3 ) A C Voltmeter, Ballantine Type 3 2 3 o r equal (*2% t o 5 MHz).

(4) Calibrated voltage source, o r regulated DC supply and digital v o l t m e t e r

0 - 1 5 volts, a c c u r a c y i1 millivolt.

(5) D i s t o r t i o n m e t e r Hewlett Packard T y p e 333A.

6.3 POWER SUPPLY

T u r n the g e n e r a t o r on and allow it to w a r m up for about 30 minutes. M e a s u r e the

voltage b e t w e e n ground and f 2 2 volts and then -22 volts. T o l e r a n c e s are *O. 5
volt. Lf off t r i m R I 18B to bring both within 0. 5 volt.

6.4 INTEGRATOR

S e t the frequency t o 5 x 100. Connect the oscilloscope t o TI, and adjust the scope
to 1 rnv/cm ( c a l ) , ac coupled. Adjust R310 for minimum s i g n a l , (If t h e r e is too
m u c h noise on the s i g n a l , connect a 7 kHz f i l t e r in s e r i e s w i t h the probe, and make
sure that the ground connection i s close to TI. The 7 kJ3z f i l t e r may be fabricated
b y connecting a 10K r e s i s t o r in s e r i e s w i t h probe, w i t h ,0022 mfd capacitor to
ground. )

22
 R4

OMEO
SE

R:
9
A

F i g u r e 11. T e s t Points and Adjustable Components

23
Function G e n e r a t o r 5 4 0 0 A ( R )

6.5 DCLEVELS

Set the f r e q u e n c y to 50 x 10, sine w a v e f o r m ; s e t the output amplitude to rriiniriium.

and attenuator voltage to 15 volts, the TUNING s w i t c h t o DIAL, and S Y M M E T R Y
control at NORM. Connect the dvrri t o the O U T P U T , a d j u s t the output level to
0 volts by m e a n s of the m a i n output DC LEVEL A D J control R717 ( r e a r panel).
U s i n g the d c v o l t m e t e r , c h e c k the voltages listed i n Table 3, and if n e c e s s a r y adjust
the p o t e n t i o m e t e r s indicated; all should be s e t t o 0 volt. S e t output amplitude
to maximum,

Table 3 . D C Levels

Test
Voltage Point Adjustment Tolerance

I n t e g r a t o r input TI R308 * I mv
I n t e g r a t o r output TO R395 f 1 mv

Sine Amplifier input AI R2 46 * 10 rnv

Sine Amp1if ie r out put M a i n Output R23 1 f 20 rnv

Auxiliary Square wave fl-~

Output R387 & 10 mv

Square wave ( s w i t c h Main Output R 3 74 f 30 rnv

to l l 1

6.6 SINE WAVE DISTORTION

Connect the generator t o the distortion analyzer; s e t W A V E F O R M to sine, fre-

quency to 5 X l K , amplitude t o m a x i m u m , and attenuator to 15 volts. S e t the d i s -
tortion analyzer t o 5 kHz and adjust for a null. Adjust the g e n e r a t o r SYM ADJ pot
on the r e a r panel and then pots R 2 2 9 and R221 in the sine shaper for m i n i m u m
distortion. Turn the generator tuning d i d m a x i m u m CW. Set the distortion
analyzer t o 1 kHz and adjust the g e n e r a t o r dial for a null. Adjust SYM A D J pot f o r
minimum distortion. Disconnect the analyzer.

6.7 VC AMPLIFIERS

Switch the TUNING s w i t c h t o E X T t V. D o not apply any voltage to the V C input.

With the d c v o l t m e t e r measure the voltage at the base of Q 4 0 1 p Adjust R423 to
0 110 mv. Measure the voltage at the e m i t t e r of Q404. Adjust R416 t o 0 % l o mv.

24
6.8 SQUARE WAVE FLATNESS
5g.r 7bPJ16hJ 7 0 ‘‘01Al’’
Connect t h e , m a i n output of the g e n e r a t o r t o the oscilloscope using a 50 o h m cable
and a 50 ohm t e r m i n a t o r at t h e scope. S e t the waveforrn to square w a v e and the
f r e q u e n c y t o 1 MHz. S e t the scope to 0.2 u s e c , / c m gain to 2 v/cm and adjust
scope f o r 6 c m deflection peak.+to-peak. Adjust C506 on the main c a r d for maxi-
mum flatness, Aberrations should not e x c e e d 0.3 cm. on scope,

6.9 EXT VC CALISRATION

With the generator in the E X T tV mode, s w i t c h the frequency multiplier t o X I K ,

and apply 10 v o l t s f r o m the calibrated voltage s o u r c e to the VC input. Connect the
frequency counter to the output. Output frequency should be 50 kHz f 50 Hz. If
off, adjust t r i m m e r capacitor C604 on the Bandswitch. S e t the rr-ultiplier t o XIOOK
and reduce VC voltage to 1 volt. Output frequency s h o d d be 500 kHz; *lo0 Hz. If
off, adjust t r i m m e r capacitor C60 1 on the bandswitch. Change external voltage t o
IO volts. Output f r e q u e n c y should b e 5 MWz f 10 K & . If off, adjust capacitor
C343 on the main card.

6.10 SINE WAVE RESPONSE

S e t the g e n e r a t o r t o 10 x 100, dial m o d e , output terminated with 50 o h load;

w a v e f o r m s w i t c h to sine, amplitude f u l l CW, and a t t e n u a t o r at 15 volts. Connect
the ACVM across the output, and s w i t c h f r o m IO x 100 ( 1 k b ) t o 50 x lOOK
(5 MHz). Adjust C231 in sine buffer for a change of less than 3 percent,

6.11 DIAL CALl6RATlON

W i t h the generator in the DIAL rr‘ode, s w i t c h t h e frequency multiplier t o X!K arid

adjust the dial for an output f r e q u e n c y of 50 kHz, The dial should read 50 f 1
division. S e t the multiplier to XlOOK and adjust the dial for a n output f r e q u e n c y
of 500 kHz. The dial s h o d d read 5 f 1 d i v i s i o n . If the dial i s off, loosen the
d i a l s e t s c r e w s and adjust the position of the dial on i t s s h a f t . At 50 kHz ( 5 0 X I K )
tighten s e t s c r e w s .

6.12 TRIANGLE FREWENCY RESPONSE

W i t h the frequency 6 @ t at 10 XLK, triangle waveform, terminate the output w i t h t h e

5o-ohm load, and connect it t o the a-c voltmeter. Set the g e n e r a t o r f o r maximum
output. Measure the voltage at 10 X l K , and s w i t c h t o 50 X100K. Adjust C704 f o r
minimum amplitude change between the 10 KHz and 5 MHz frequencies. W i t h this
setup unchanged, go on to the next step,

6.13 RAMP FREQUENCY RESPONSE

With the s a m e setup as in paragraph 6 . 12, connect the output to the oscilloscope.
with the 50-ohm terminator at the scope. Display the 5-MHz triangle, a6 ad-
j u s t e d i n 6 . 12, and switch to the positive ramp waveform. Adjust C706 f o r a r a m p
amplitude of one-half the peak-to-peak triangle amplitude.

25
NOTES
Multiplier and Attenuator PC Boards
 RE
- ~

[No.
-
,ymhal u e * c r i p t i on Ilfr. Part -
>AB EBlOGl
!IO1 IOOK R322 1
:in2 3.3K 1323 1.1K XH P3-TIL.IK
:in3 390 u324 3YK AB ,81935
31n4 1no K3Z5 3.92K KII M3-TI-3.92K
1135 1.2K
:I06 4I R331 1.BK 117w AB FR2775
?I07 I 00 U332 680 1/4W au eo6811
?I08 47 1313A 390 112w a8 EB5615
il09 100
Ill0 2K R334 5.llK 1IRW KH Y3-Tl-1,IlK
?Ill 1 00 9335 220 1/4W AR CB2211
1117 390 1<33b bXU 114w A0 C86811
1113 3.3K R317 150 1/4w An CBI~II
8'114 750 R338 5K 81hl 72PH
E1 I 5 4.02K K341 l5K 1/4w A8 CAI535
0116 I 00 R342 623 1/18 au ~ ~ 6 2 1 6
"117 10K R34?A 2.21K l1BW KH :13-ll-2.21K
"118A 4.22K R343B TQI?1 4B TYPE CB
Y1188 lllll R344 I0K 114w An ~ ~ 1 0 3 1
9119 4.7K R345 220 114w aB ~82211
~17n 4.22K Q346 220K I14W AB CB2245
PI21 Inn R347 9.IK l14W AB C89125
11122 InK P348 4.3K 114w 48 CB43Z5
I1123 4.22K H34YA 240K 1/4w AB CB2441
0124 330 iii498 TRIM ,AB TYPE cn
1125 330 P350 10K 1/4w AR ~ ~ 1 0 3 5
Rl26 220 2351 in l14W AB CBl001
9127 220 R?rs7 1 nn 114w AB CBlOll
RZ01 I.07K 1K 1W AB GB1021
R202 6.04K R314 I.5K Ii7W AB EBl525
'1203 1.33K li355 220 114w an ~ ~ 7 2 1 1
R204 b.34X R356 4.42K 114w KH M4-TI-4.42K
1205 1.lK R357 2.21K 112W KH 145-TI-2.21K
0206 3.92K 1135s 1.8K 114w AB CB1821
R207 22.lK 1135Y 75 1/4w UB cniins
V0R 2.05K 9360 1 no 114w AB CBlOll
1209 4.l7K R361 330 2w AB HE3311
'1210 26.7K R362 2K 112w AB E82025
P21 I l0.5K R363 1K 1W AB $81021
9717 4.87K R364 1on 114w AB CBl0ll
Q213 825 1315 l.5K l12W AB EBl525
'1214 1% I1371 2.IK 112w A0 E82721
l!215 220 Pi72 2.7K 112w AB EB2721
921b 4.75K R373 1iK 114w AB CB1531
P217 4.75K R374 5K PIT Blol 72iM
RZiR 340 R371 22x ll4W A? CB2231
0219 120 R376 510 114w AR C85111
1220 340 R377 470 l/4W A? CR4711
:iz21 SX P?T R378 IOK 1/4w a8 CB~OSI
R222 1Y Ri79 511 114w a8 1~~5115
"23 2.05Y ~3x0 27 1W AB GB27uI
P224 700 ~381 100 1/4w AB COlOll
Q.225 200 03RZ 330 112w AB FR3311
'I226 2K 73R3 56 114w AB CB5601
R227 75l R3R4 I.% 112w AB E81221
P228 75X R385 340 3w TL it-3
9229 25K P'IT 11387 5K tW1 BXn 72pM
P231 z 5 x lWll R3RX 2.2K 112w AB EB2221
1737 1.1K R3R9 15 i14w AB CBl50l
1231 i5nK R390A I50 ?W TL Et-3
9234 330 HZ900 TRIY AB TYPE EB
9235 100 11391 100 lI4W AR c?inii
9236 I00 R392 IOK 1/4w aB ~~1031
7737 2K R393 10K 1/4w AB CB1031
'!23R I K R394 innK 114w AB CBl04l
"239 1Y R395 2 5 X POT BKM 72iM
'2240 l00K R397 100 10" 114w OR cnioii
'i24l 100 R398 4.7K 1'1 11114 aa r:R4721
'a42 IUUK R400 10 10 114w AB cmni
R243 100 ~402 1 K POT 1.5' L l > I i A R I T Y 3351-RIK-L.5
*?44 774 ll403A 3UK ii" 114w AB CB30331
"24! 2I Z ~ 4 0 3 ~ TRIM AB TYPE CB
7246 251 P1T R404A 5.49K KH '14-Tl-5.49X
1247 I R404R TRIM AB TYPE CB
i74R 1 fin R405A 47 AB '84701
,240 1 R405B lRI'4 A? TYPE en
mn II R406 9.76K 1% l18U K!l '43-TI-9.76K
"2511 4 30 9407 lR7K 19. 118W KH !13-T1-187K
R25lB 771': ~ 4 0 ~ I O K POT 30% 314W CT5 307089
?252 15K "409 3.1 59 I/4W no ~ ~ 3 0 5 5
R300 470 Il4lU 3:I 5% 114w AB C?3055
'I301 330 R411 IOK sz 114w AB CR1035
0302 220 R413 2.5K POT 707 2w KH A3028
R303 51.1K R414 5.lK 14 I14W KH L(4-TIb5.IK
R304 5l.lY 1!415 2.71 104 li2W A8 182751
'I305 4.22Y R416 25K POT BYM 72pM
1130b il I Y R417 100 48 CBl012
2307 5.lM R418 61.YK KH l~I3-Tl-61.9K
o.?w 75h PO: 9419 h i .9K Kil :43-T1-61.9K
mi 10K R420 l00X KII IM3~Tlb100K
1310 In? POT R421 2.4K A? CB2425
"311 22 !I422 3.3'4 AB CB3351
"312 130 9423 21K P I T BKM 72iM
n313 Y'JY 9474 1 .7K AB mi225
9314 30 Y Q425 IflK AB CB1335
P315 232 X42b 100 AB cmii
'3lb 330 9477 inn AB '€1012
??I7 7.2Y Q.07" 4.7K AB CB4121
lilR BR1 ?429 5.llK KH '13-TI-5.11K
R i l l 7.7K R131 5.llK LH '!3-TI-5.11K
.'.j20 1" Q432 61.9K KH '13-TI-61.9K
'321 1433 61.9K KH :43-T1-61 .9X
R253 -
-
- - CONT.
Symbol Der. cri u t i on Mfr. P a r t No. jvmbol Descriptio0 Mfr. Part Flo.
~ -
R4 34 I /sy KH VI 3- T1- I 30K (606 5CK l14W :iH "1-TI-SOK
R435 I /w PB CB7425 P607 innK 1/AW KH M3-TI-IGOK
R436 1 :4w Rfi CB1225 R608 750 1 /2k' as EB7515
R437 1/4M AR C01035 R609 229 1/4h AJ CB2211
R438 11411 aB CnIOll E610 53aK 1/4W I(-' W4-Tl-53ljK
R439 ID 101 1/4W A0 CEl00l P61 I 1# 1 /2k' KH M5-7 1 - 1R
R440 $20 10: 2Y AS if88211 Rhl? 50ilK I14h' KH Y4-TlSOOK
RJ41 'lo I01 1/4W AB CB1001
K44Z '100 ilU& I/W AR C31Q12 Hi91 5K POT EW KH A2935
2702 3.3K 1 /4W AD CB332!
?SO1 E.4K 5: 114k' AB e32425 R703 15K 1/4W AB CR1531
9502 1ao 20E 114W AB C81012 R7D4A 1.3K 114w A9 CE13P5
8503 TSIM AR TYPE CB R704B TRIM AB TYPE CB
R534 470 1 OR 1ldY AR CB4711 K705A 1X I /4w AB CB1025
695 6.2K 5% 114M AB tR5225 R705B TRIM 48 TYPE CLI
H506 4 70 10% 1?4W A5 LE4711 27nh 6.8K I /UW AE CR6821
R507 680 10: 1w Aa GBliRll R 7F 7 r. 150 1 l4W AB CB1511
~ 5 o a 2.55s 11 1/8W KH M3-71-2.55K R7378 TRIK AB T Y P E ca
H509 3 3c 10'. 1/4y AB CB3311 ni08 220 111W AB cs2211
H510 100 l3X 1/ 4 d Ai3 CBlOll X709 47 l/4W AB cam1
K5l E 16.PK IT I /8W KI I tf3-Tl-76.2K R710 TSIM AB TYPE CB
Rjl3 AB TYPL CB H711 270 1/7w AB E8271 5
R51 E 1?4W AR CB7505 K712 220 I /4W ,1B CR2211
R713 I og I/W AS CBlIll I
R51G 1/4W ,AB CB3035 R714 51 1 /m AM iB5105
H517 1/4w AB CBSP41 R715 hUO 1 /4sAl AB CE6RIj
~5ia 1/4d AB CB3935 R716 1.8K 1/ 4 ~ AU CE 1821-
R519 114W P.B C05i25 R71i 101: POT 3f4W CTS 307089
K523 I/W hR CB2711 V.-
l S 5nn PO- 111 .uH A2945
R521 I !EX RB ER3605 ,;I,> ion 1/4ii LR r97311
R522 I !4ld AB C?lOUl ?YCi 108.1 3/4w K? '16-T! - ! ??, I
E523 I /4W AB c ~ i n ~ i R.502 113 l/?d K! l M - T I -1 1 3
R525 I /4h' aR C?1001 K803 142.3 I /4d KH 74-Tl-742. 3
E526 10 10% I/4Y AB CB1301 KO04 36.25 1 /Rk' KC' Y3-71-36-25
y:,
R522 230 1% 1 f 2II rc M5-T1-200 2805 14T.3 1/4W M4-Tl -142.3
K529 20Q 1k 11211 Kc! l%-T1-2?1(1 smh 96.25 1/8W \h M3-T1-96.25
?530 230 7; l/ZW KH M5-T1-200 3807 142.3 1/4W YH M4-Tl -152.3
'1531 2.30 I:' 1/2w Kd Fr5-Tl-20O ?eo8 96.25 1/sw KH M3-T1-96.25
R532 220 10 I 1,4'J' AU CE2211 ?BU9 142.3 1/4W XH K4-Tl -I 42.3
?810 96.25 I law KH Y3-T1-96.25
R60 I 500 0.1% I /2w Ktl '45-T1-500 7811 142.: I 14W Ktl Y4-Tl-I 42,s
~602 1K 0.11 1 /4w Ktl U4-TI-# ?R12 96.25 1/8W KH Y 3 - T I -96.25
~603 47 IO? 114'd FB ~ ~ 4 7 0 1 751 3 142-3 I /48J KH ".4-T1- I 42.3
R604 5K u.1m I I% <H Y3-Tl-5K ABI 4 65.81 119u XH !13-?l-65,81
6605 1CK 0.1: I I A'*# (H Y3-Ti-lOK "81 5 100 1/4w AB CBlOll
-
5400AR ONLY

CAPACITORS
Symbol 'ifr~ Part Flo.
- Des cri u t i on
Description
-
5yymbol Yf?. P a r t No.
ClOl 800uf LYTlC 40V YliL T C W B 0 I I I ~ 4 O J l PPl C3AD 1u f 202 MAL TC105'1Q35RL
c:o2 IUf ?OX 35Y !IAL TX105Y335AL C381 I uf 23% MAL TDClCSI035AL
C!O3 mouf LYTIC E DY MAL TCWROlH04OJIPl P C382 ZZpf 102. FL:1 9205-299
M 1 5 C m KIO
CIOL 1u f 20f 3SY t.1.4L TDC105MO35CL C3R3 ?pf loa 500Y ASP
c135 .C47uf 20: icnv ERT 81 21-1 3@-651-47311
C106 1 uc PO? 35:' MAL TOC 10SMO35AL c401 1000pf 20% 5301' SP C0238501ElOZM
ClO? .047Uf 20: I0o.l CRT 8121-100-651 -4731 c4o2 3300pf 20:; SOOV SP Cr)2385@1F 3 m l
C108 iuf 237 35Y YA L TUCl?W035P,L C403 I U30Vf 205; 5301: SP CC23BWI E l OZM
c109 20Uf LYTIC 53Y SP 30D2366057CC4 C404 15pf 101 5Ou': R5P 9300-1 5 1 1 0
ciin 1U f 2rix 3 5'1 t1.4 L TDCl?15Y935AL
C111 2CUf LYTIC 50'1 SP 3n02mn50~~4 C431 l300pf m y 50OV SP C023B501 E10214
C43P 3300pf 201 SOOU SP COZSE501 F 3 3 3
CZ0l .Oluf Z K 500w SP CU23B501G103M E433 l0OOpf 20:: 500U SP C023B5Dl E192F
CZOE .ni Uf 20: 500'1 SP CE338501 GI 03M c434 5.lpf IO2 500Y .ASP 4710-51310
c435 luf 235 351' MhL TnCl O W 0 35AL
i231 4.5-20nf TRIMMER STT 7 s - T S I K O - 0 2 - H750. C436 Iuf 20% 3 5'1 MAL TOC105M035AL
C732 lOUf 1 n: 50UU ASP 9213-101 111
c233 lopf in: 503'~' asp 921 3 - 1 0 7 1 0 C501 6.8uf 20% 35u MAL 1960685X0035FB
CP34 lUf 202, 35v FlA L TDC I o w n m t cs02 22pf 10% 50UV ELM OM15CEPOK
C2?5 I Uf 202 3% 7IP.L TDCl05Mri35fi.L c593 6.8uf 208 35v VAL 1960685XOO35FB
C236 I uf 20% 3 5'1 hl.41 7DC 1@5.'1335P.L csn4 luf POW 35v MAL
C2?7 37Pf 107; 5Oll'l E?!' W15C473K E505 .Oluf 2ux 500V SP
E735 33pf S5 5 m ELM DM1 5C330,l C506 1.5-20pf TRIMMER STT
i239 f90Df 10Y 5oov EL'I cM15C181 K C507 2Pf. tnx 500V ASP
C240 6.2af 1QX m v 9212-629TO C50W 1 Pf 102 SUCl',~ ASP
c300 56Df ins 500Y ELF DM15C560K C509 .luf 238 103u ERT 8131-130-651-134M
c30: .OEUf 23f SOOV SP C023A501G203M C510 .luf 29: 109Y E RT el 31-1 30-651-134FE
c302 510pf I or 500Y ELM DM19C511K c511 1uf 2g2 35v MAL TOCl05Mfl35AL
L3@? 200p* I ox 50clV ELM DMlSC201K E512 6.8Uf 203 35v FAL 196[)685X0035FR
C304 e2pf 101 500V ELM DMl5C220K C513 6.8uf ZOX 35'1 MAL 1960685X0035FB
e305 lOpf 10'1 5oov ASP 9213-10110 C514 7.5pf 1 0:: 530v ASP 5212-75970
C306 .CIUf 20% 500V SP C023B501G I OM
c307 .OlUf 202 50OV SP c0236501G103n C601 3-9Of TIIIMIME?. STT 7S-TRIKO-OZ-NO75
C308 I uf EO$ 35'1 MAL TDC105M35AL C602 33pf 5: 500V ELM DM15C330K
C309 1U f 20: 35v MAL TDClO5M035AL C6D3 330pf 5:
; m v ELM Ot.119C331 J
C604 1.5-20pf TRIMMER STT 75-TRI .K3-02-N750
C341 I77f 10: 500V ASP 9213-12110 C605R 4MPf IO? 5031' ELF( DM19C431 K
C342 SZPf 1OB 5onv ASP 92 12.829 10 16C16A ,347Uf 2 '$ 200:' TQW 1463VW-lp
c343 3-90? TPIMMER SI7 7S-'I$I tGUZ-tl750 CBOK B TRIM
c34a luf 202 35Y r(R1 TOG1 051035AL C607 5uf +02 - 4 2 1.30'1 TRM X463UW-15
c345 .047Uf ZclI I O0Y ERT 8 1 2 1 -100-651-47314 CBO5B TRIM TYPE RM15
L346 .4?U' 20: 1 00v ERT 81 31 -100-651-47av C701 .33uf 201 I 00v ERT X131-1OO-651-334V
1347 :3pf I CII 5?101' ASP 9303-151 1 0 C702 180pf I 01 500'1 ELM DM15ClSIK
C30E l5pf 1 0:: 500v 1SP g3OO-i5110 C703 15pf 10% 500'J ASP 5300-1 5: IO
c37c lOOnf IO? 500'4 EL7 Ml5ClO1K C704 7-35pf TRIYtlER STT 7S-TFIK0-02-P41500
C371 I uf EC" 351' :,!A1 rDC1U5>1@35RL C705 5.luf 10:; 5nni' 2SP 421 n- 5 1 91 0
C372 1 uf PO? 35Y MAL TnCl05M035AL L70t 7-35pf TSIMHE? STi 7 s - T P I KO-DE-Rl500
L3/3 10OOUf 20: 5U3Y SP ~ 3 2 3 ~ 5 n0 n
1 m C70i 513f 10: 503Y ELM Dtll5C51DK
c375 !23Pf 5? 509Y ELI' W15CIZlJ c73e 3Gof io; 5U0'l ELM OM1 5C363K
C376 1UO"f 20: sow SP ~023n5g1El3ZY c/o4 33Uf 57 500Y ELF 7#15C33,?J
C378 1onnor z [I : 503v SF CO23B50! E l 97P
C37Q , I uf 20: !071: C?T 8131-100-651-134Y
-
CWl lC00pf 23: 500 Y SF CO23E501 EIOZM

* 5400pR ONLY
 TRANSISTC IDES MISC.
Mfr. P a r t NO.
-
Sy",bOl Ueicription Yfl. P a r t No.
'lliZ370 AOT 'llt2370 CR701 IN4149 TR IN4149
risw TI TIS97 CR202 IN1119 TR 1'14149
r1~93 TI TIS93 CR203 IN4149 TR IN4149
'IJL2520 '1OT bir'tz5zn CRZ04 lN4l4q TR 1114149
7'15225 'IO1 2N5225 CR2OS IN4149 TR IN4149
28087 MOT ZN5087 cnzo6 lN414q TR 114149
2N5225 YOT 2N5225 CR207 IN4149 TR lNUl4l
ZN5087 MOT 285087 CR208 IN4149 TR 1 N4149
CRZ09 IN414q TR 1N4149
TIS92 TI iiS92 Cll210 1N4149 TU IN4149
21129051 TI 2129051 CR2ll IN4149 TR IN4149
CRZIZ IN4149 TR 11l4149
lP56566 MOT ',IPS65bb CR213 1WlU9 TR 1N4149
NPS6566 MOT MPS6566 CR21Q IN4149 TR lN4149
h11'S6518 MOT MPSSIIP CRZl5 IN4149 TR IN4149
CRZlti IN4149 TR IN4149
SU2365 SIL ZU2365
MPS6518 M
' OT '1PS6518 CR231 1N749A ZENLR CI lN749A
MPS6518 5101 MPS65-8
MPS6518 XJT MPSLSIR CK301 IN9658 ZFIIFR CI IN9658
IIPS651R 'IOT MPS651R F18331 IN4149 TR IN4149
1N2905A TI 2N2905P .l!341 IN4149 iR IN4149
211ZZIVA TI 2N2ZIYA CR342 IN4149 Ti' IN4149
TIS93 TI TIS93 :R343 184149 In IN4149
ER344 114149 TR IN4149
YPS3646 MgT MPZIfi4fi :R345 IN4149 TR IN4149
!IPS3646 !#UT >lPS364fi :R346 INRI49 TR IN4149
X347 1N4149 iK IN4149
MPS6566 '10T YfS656h X348 1 !MI 19 TR 1N4149
MPS6566 MO I IlPS6566 X349 1114149 TR IN4149
11~~36nn M T YPSXK
ilPS3640 !HOT *IPS3640 :I1371 IN4149 TQ IN4119
MP5364ti '10T MPS3616 :R372 IN4149 TR IN4149
MPS3646 IMDI MPS3646 :R373 111149 TR IN4149
:I1374 lN4149 TR 1N4149
71597 TI TIS97 :R375 1!1957B ?WP CI IN9578
TIS97 Ti 11\97
MPS6518 bioi MPZ6518 :R501 '112361 Y'IT ?Z73hl
llPS3646 !I0T MPS3646 :R502 lly1149 TR IN4149
IlS730Z 115 NS7302 : R ~ I 1N1149 rii 1114149
2N5087 MOT ZN5087 :R132 IN4149 TR IN4149
21isoa7 MOT 2~5n87
2N5087 MOT .2N5087 ,231 3.3uny 10% OLV 1537-24
,232 fl.2uny 101 DLV 1537-34
NS7302 PIS NP7302
2ti5oe7 MOT 2~6087 301 R.2uhy 104 ULV 1537-34
2N5087 MOT 2N5087 331 8.2"hY 101 OLV 1537-3U
ZNZZIOA TI ZNZ219A 341 3.3uhy Ill% OLV 1537-24
342 3.3uhy inv, ntv 1537-24
MPS6518 MOT YPS6518 ,371 8.2"l,y 101 DLV 1537-34
MPS65l8 1401 MPS6518 372 luhy 10% ULV BP774-2
MPZ3640 ,I01 MPZ3640 373 luhy IO7 OLV BP774-2
MPS6518 MOT MPS6518
MPZ6566 MOT MPZ6566 ,501 01 v RP774-2
2N2219A TI 2N2219A 502 ni v BP774-2
ZN2905A TI 2N2905A mi 01v BP774-2
11192 TI TIS92 504 ULV 8P771-2
71593 TI TIS93
,601 3.31,' 10% OLV 1537-24

801 FERRITL,IOROIU AB T0620ClUlA

101 .4AIIISV Slo-Bla BUS MDA

.2Al230V Slo-8.a
lfl4002 ,vi5 .., -,,,2
~ " "
IN4002 MS: l'l4?O2 101 POWLR TRANSFOKMEII KH 82883
IN~DOZ 3 Y~ :\ 4 l Q 2
IN4002 6s: IN4002 ,101 TOGGLE SWITCR CK 7101
IN456 TP IN456 ,in2 S L I D [ SWITCII SWC 4 6 7 ~ 6 ~ ~ ~

,b01 PUSH-BUIIDN SWI trH SHU YXF10-40-GRM

Y12361 YOT YZ2361 ,bo2 xiut sn;Tcn CW GF326
24843 ZCIIER coo
In4002 MSC 1114002 ,701 ROTARY SWITCH KH R2926
IN4002 MSC IN4002
,801 PUSH-BUTTON swilcn SHU 8XF10-20-6R
~

Et: 1011211 A l l e n B r a d l e y Co. Miiwaukee, W i i i MAL P . R . M a ! l o r u L Cn. Indinnnnoli5, Inn.

AZP (RZl471 A i r c o Speer D u b o i i , Pn. MOT 1347131 l l o t o r o l a Semiconductor Phoenix, P r i i .
eiis (714001 B ~ I Iwg. ~ ~co. S t . L a u i i , Mo. YSC (145521 Nicio s e m i c o n d u c t o r c a r p . c u l v e r C i t v , C a l i f .
CI (067511 Cornomenti. 1nc. Biddefard, Maine )I5 (364621 N a t i o n a l SemlCOnductor L t d . Plaftrburyh. N.Y.
CK 1091531 LEK Component< Waterto,<", M d i i SlL (178561 iiliconlx Sunnyualr. C a l i f .
CTS I714501 CTS Corp. Elkhart, Ind. 1P (562891 Symgur, Clc-ctrir Co. N o r t h Adami, ' I d i s .
cn 1797271 C o n t i n e n t a l wlrt i i e c . Pi,iindrinhiu, pa. ZTT Stpttnrr~Triiih Ca2d"OYia. I 1 . Y .
DLV 199R001 Delevan L l e c t r o r l i c s C a i t A u r o r a , N.Y. SWC (823R91 Switchwaft Inc. Chicaw. I l l .
Fin (721361 Electrornollui, Y f g . w i 11 > m a n t i c , corm, TI 1012951 Texas I n r t r u m e n t r , I n c . U a i l a i , Texas
ERI I729821 E r i r it-chnological Erie, Pa. TI (94322) le1 Labs ~ ~ ~ I I t?r,C I ~ N.P /I.
S
GE 1L135081 Gmi,ral Electric SvTaCuIc, N.Y. TR I038771 T r a n i i L i o n [ l e c t r i c Cn. Wakefield. Y a s i .
YH 1888651 K r a h n ~ H i T eC o w Cambridqe, Yaii. TPW (R44ll1 TRW Carp. 9galldla, Neb.
 PC506

Generator PC Board
 +

N(1TES:
I- ALL RESISTORS IN OHMS UNLESS OTHERWISE SPECIFIED.
2-m-L VOLTAGES *IO% OF NWIWAL W L E S S OTHERWISE SPECIFIED.
SETUP- ~ R E * U E ~ C ~ : ~ , O ~ , ~ ~ ~ ~ . ~ w0
AMPLITUDE: " ~ ~ W I ~ : ~ ,
DC OFFSET: OFF. S I U M E T W : W R Y , TVIING: DIAL 8 LINE: 6DHz
3M)chn IN SERIES WITH PROBE,SCWE ON E X 1 TRIG 8 +SLOPE
4";
-
- -v

~m2
3.3K
20

I
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DC OFFSET

USING IUXILIARI SO WbVE OUTPUT FROU GENERbTCR EXT SYNC

3-FRONT PLNEL CONTROL m'
4-REAR PANEL CONTROC 0
5-CHASSIS GROUNO h 1

L '
I-FLOATING GROUND

I 7-TEST WlNT Q
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E
I%-%- r-----
ril
w

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PC507
 0

OUTPUT PROTECTION CIRCUIT'

MODELS: 4100A, 4200,- 4300, 5000,
5100A, 5200, 5300, 5400A
 OUTPUT PROTECTION CIRCUIT

This instrument has incorporated a protection c i r c u i t , which i s connected

in series with the 50 ohm o u t p u t impedance terminal. If a voltage is
accidently applied t o the o u t p u t terminal, t h a t would cause excess current
t o flow in the o u t p u t transistors, the SCR's will t u r n on bypassing this
current. When the SCR's are turned o n , the instrument will present a short
c i r c u i t t o the load.
This c i r c u i t will be damaged i f the source load i s capable of supplyinq
more t h a n 2 amps. If i t i s likely t h a t t h i s s i t u a t i o n may develope, a 2 amp
f a s t blow fuse may be inserted i n series with the o u t p u t ,
A t low oscillator frequencies, the circuit will automatically recover when
the voltage i s removed from the o u t p u t . A t higher frequencies, i t will
be necessary t o t u r n the o u t p u t amplitude down or shut the instrument o f f
momentarily a f t e r the voltage is removed from the o u t p u t .

FROM 2.7 TO
ATTENUATOR > v *OUTPUT
OUTPUT 150pf BNC
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b I I

470
TIS93

& l l 'IN4149
470
.I
1- GE
A LC106Y2

IN4149

470
T
FROM
ATTENUATOR)
GN0
T TO
W OUTPUT
BNC SHELL
(GND)