English Instruction SheetPanel 1

707
Loop Calibrator
Instruction Sheet

Introduction
The Fluke 707 Loop Calibrator (hereafter, the Calibrator) is a
compact sourcing and measuring tool. The Calibrator tests current
loops of 0-20 mA or 4-20 mA and measures dc voltage to 28 V. It
comes with a set of alligator-clip test leads, a 9 V alkaline battery,
and this Instruction Sheet.
The Calibrator is a IEC 61010, CAT I 30 V, Pollution Degree 2
instrument. A CAT I instrument is designed to protect against
transients from high-voltage, low-energy sources, like electronic
circuits or a copy machine, for example.
Calibrator Capabilities
Function Range Resolution
Measure V dc 28 V 1 mV
Measure mA dc
0 to 24 mA 1 μA
Source mA dc
Source loop power 24 V dc N/A

Battery Saver
The Calibrator automatically turns off after 30 minutes of inactivity.
To reduce this time or disable this feature:
1. With the Calibrator OFF, press D.
PSXX is displayed, where XX is the turn-off time in minutes.
OFF means the power saver is disabled.
2. Turn m to decrease or increase the turn-off time.
To disable, turn m until the display shows OFF.
3. The Calibrator resumes normal operation after 2 seconds.

August 2001 (English) Rev. 2, 2/08

© 2001-2008 Fluke Corporation. Product specifications are subject to
change without notice. All rights reserved.
English Instruction SheetPanel 2

W Warnings and Cautions

To avoid electric shock, injury, or damage to the
Calibrator:
• Use the Calibrator only as described in this
Instruction Sheet or the protection provided by the
Calibrator may be impaired.
• Do not use the Calibrator around explosive gas,
vapor, or dust.
• Inspect the Calibrator before use. Do not use it if
appears damaged.
• Check the test leads for continuity, damaged
insulation, or exposed metal. Replace damaged
test leads.
• Never apply more than 30 V between any two
terminals, or between any terminal and earth
ground.
• Use the proper terminals, mode, and range for your
measuring or sourcing application.
• To prevent damage to the unit under test, put the
Calibrator in the correct mode before connecting
the test leads.
• When making connections, connect the COM test
lead before the live lead; when disconnecting,
disconnect the live lead before the COM lead.
• Never use the Calibrator with the case open.
• Make sure the battery door is closed before you
use the Calibrator.
• Replace the battery as soon as the M (low battery)
symbol appears to avoid false readings that can
lead to electric shock.
• Remove test leads from the Calibrator before
opening the case or battery door.
Symbols
Symbol Meaning
+ ON / OFF button.
J Earth ground
W Caution: Important information. Refer to instruction sheet
h Caution: Static discharge can damage parts
T Double insulated
M Battery
Conforms to relevant Canadian Standards Association
)
directives. Certification # LR110460-2.
P Conforms to European Union requirements
F Direct current
Do not dispose of this product as unsorted municipal
~
waste. Go to Fluke’s web site for recycling information.
English Instruction SheetPanel 3

Pushbutton Functions
Pushbutton Function

D ON or OFF button.
Press A and D simultaneously to toggle
A+D between the mA output spans.
• 4 mA to 20 mA = 0 % - 100 % (default)
(Power-on Option) • 0 mA to 20 mA = 0 % - 100 % (optional)
The selection is saved until it is changed.

l+ D Press l + D simultaneously to turn HART

(Power-on Option) resistor (Hr) on. Default is off.

Press to step through modes:

A • Source mA
• Simulate mA
• Measure mA
• Loop Power (24 V)
• Measure V dc
Turn n to increase or decrease current output.
Current output can be adjusted at a resolution of
1 μA or 100 μA. (Default is 1 μA.)
• To adjust the current in 1 μA steps, simply
turn the knob.
• To adjust the current in 100 μA steps, press
hij in and turn the knob.
Press B to step the current up 25 % of full
B scale (20 mA).
At full scale, press B to step the current down
25 % of full scale.
Press B + C simultaneously to enter the
B+ C Auto Ramp mode and select a ramp form.
A continuously applied or controlled mA ramping
signal is produced in one of three ramp forms.
e (slow), g (fast), or f (step) identifies the
selected ramp form.
Press C to start the SpanCheck™ at 0 % of
C selected current span, i.e., 0 mA for 0-20 mA span
or 4 mA for 4-20 mA span.
d is displayed.
Press again for 100 % of selected current span.
English Instruction SheetPanel 4

Using the mA Sourcing (Output) Modes

The Calibrator outputs current for calibrating and testing 0 to 20 mA
and 4 to 20 mA current loops and instruments.
In SOURCE mode, the Calibrator supplies the current.
In SIMULATE mode, the Calibrator simulates a 2-wire transmitter in
an externally-powered current loop.

Changing the mA Output Span

The Calibrator has two mA output spans:
• 4 mA to 20 mA (0 % to 100 %) [default]
• 0 mA to 20 mA (0 % to 100 %) [optional]
To change the output span, turn the Calibrator off. Press A + D
simultaneously. The selected setting is saved until it is changed
again.

Sourcing mA
Use SOURCE mode to supply current to a passive circuit.
A path must exist for current to flow between the + and COM
terminals. Otherwise the display indicates an overload (OL) when
you set an output value.

707 LOOP CALIBRATOR

Press simultaneously
once for slow ramp
twice for fast ramp
three times for
Press until SOURCE stepped ramp.
mA is displayed.

Turn to step up/down

1 A. Press in and
Press to step current turn to step up/down
up/down in 25 % CAT
in 100 A increments.
steps of full scale. COM
30V

ADA04F.EPS
English Instruction SheetPanel 5

Contacting Fluke
To contact Fluke for product information, operating assistance,
service, or to get the location of the nearest Fluke distributor or
service center, call:
1-888-44-FLUKE (1-888-443-5853) in U.S.A
1-800-36-FLUKE in Canada
+31-402-675-200 in Europe
+81-3-3434-0181 Japan
+65-738-5655 Singapore
+1-425-446-5500 from other countries
Or visit Fluke's web site at: www.fluke.com.
Register your Calibrator at: http://register.fluke.com.
Address correspondence to:
Fluke Corporation Fluke Europe B.V.
P.O. Box 9090, P.O. Box 1186,
Everett, WA 98206-9090 5602 BD Eindhoven
U.S.A. The Netherlands

Limited Warranty & Limitation Of Liability

This Fluke product will be free from defects in material and work-
manship for 3 years from the date of purchase. This warranty
does not cover fuses, disposable batteries, or damage from
accident, neglect, misuse, alteration, contamination, or abnormal
conditions of operation or handling. Resellers are not authorized
to extend any other warranty on Fluke’s behalf. To obtain service
during the warranty period, contact your nearest Fluke authorized
service center to obtain return authorization information, then
send the product to that Service Center with a description of the
problem.
THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER
WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR
PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT
LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR
CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM
ANY CAUSE OR THEORY. Since some states or countries do
not allow the exclusion or limitation of an implied warranty or of
incidental or consequential damages, this limitation of liability
may not apply to you.

11/99
English Instruction SheetPanel 6

Simulating a Transmitter
When simulating the operation of a transmitter, the Calibrator
regulates the loop current to a known value selected by you.
A 12 V to 28 V loop supply must be available. Insert the test leads as
shown below.

707 LOOP CALIBRATOR

Press simultaneously
once for slow ramp
twice for fast ramp
three times for
Press until stepped ramp.
SIMULATE mA is
displayed.

Turn to step
up/down 0.1 A.
Press Press in and rotate
to step current to step up/down in
CAT

up or down 25 % COM
30V

+ 100 A increments.
of full scale.

30 V dc Power
max. supply

ADA05F.EPS
English Instruction SheetPanel 7

Auto Ramping the mA Output

Auto ramping allows you to continuously apply a varying current from
the Calibrator to a passive (sourcing) or active (simulate) loop. Your
hands remain free to test the transmitter’s response.
Press B + C simultaneously to enter the Auto Ramp mode and
step to a ramp type.
The Calibrator applies or controls a continuously repeating mA signal
over a 0-20 mA or a 4-20 mA span in one of three ramp types:
Slow (e) 0 % to 100 % to 0 % smooth ramp over 40 sec.
Fast (g) 0 % to 100 % to 0 % smooth ramp over 15 sec.
Step (f) 0 % to 100 % to 0 % stair-step ramp in 25 % steps,
pausing 5 sec at each step.
To exit, press any pushbutton or turn the Calibrator off.

Using the SpanCheck Function

The SpanCheck™ function checks the zero and span points of a
transmitter in either SOURCE or SIMULATE mode.
To select SpanCheck, press C.
To exit, press any pushbutton or turn the knob.

or
707 LOOP CALIBRATOR

Put in SOURCE mA
or SIMULATE mA.

Press to start
SpanCheck at 0%.
Press again for 100%. CAT
30V

COM +

Device under
test
30 V dc max.

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Measuring dc mA
W Caution
To prevent damage to the unit under test, ensure that the
Calibrator is in the correct mode before connecting the
test leads.
To measure dc mA:
1. Press A to step to MEASURE mode.
MEASURE mA is displayed.
2. Touch test lead probes to the circuit across the load or power
source as shown below.

707 LOOP CALIBRATOR

Press until MEASURE

mA is displayed.

CAT
30V

COM +

30 V dc max.

ADA03F.EPS
English Instruction SheetPanel 9

Measuring dc mA with Loop Power

W Caution
To prevent damage to the unit under test, ensure that the
Calibrator is in the correct mode before connecting the
test leads.
Loop power provides +24 V to power a transmitter and to read loop
current simultaneously.
To measure dc mA with Loop Power:
1. Press A to step to Loop Power mode.
MEASURE mA and Loop Power are displayed.
2. Touch test lead probes to the circuit across the load or power
source as shown below.
To exit Loop Power, change measurement mode.

707 LOOP CALIBRATOR

Press until Loop

Power is displayed.

CAT
+24 V output
30V

COM +

Two-wire
transmitter
30 V dc max.
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English Instruction SheetPanel 10

Measuring dc Volts
W Caution
To prevent damage to the unit under test, ensure that the
Calibrator is in the correct mode before connecting the
test leads.
To measure dc Volts:
1. Press A to step to MEASURE mode.
MEASURE V is displayed.
2. Touch test lead probes across the load or power source.

707 LOOP CALIBRATOR

Press until MEASURE

V dc is displayed.

CAT
30V

COM +

30 V dc max.

ADA01F.EPS
English Instruction SheetPanel 11

Maintenance
W Warning
To avoid electric shock, personal injury, or damage to the
Calibrator:
• Do not service this product other than as described in
this Instruction Sheet unless you are a qualified
technician and have the required equipment and
service information.
• Remove any input signals prior to removing test leads
and opening case.
• When servicing the Calibrator, use only specified
replacement parts.
• Do not allow water to get in the case.
For maintenance procedures not described in this Instruction Sheet,
contact a Fluke Service Center.
English Instruction SheetPanel 12

In Case of Difficulty
• Make sure you are using the Calibrator as described in this
Instruction Sheet.
• Check the battery and test leads. Replace as needed.
Contact a Fluke Service Center if the Calibrator needs repair or does
not seem to be operating properly.
If the Calibrator is under warranty, refer to the warranty statement for
warranty terms, conditions, and product return information.
If the warranty has lapsed, the Calibrator will be repaired and
returned for a fixed fee.

Cleaning
Periodically wipe the case with a damp cloth and detergent; do not
use abrasives or solvents.

Calibration
Calibrate the Calibrator once a year to ensure that it performs
according to its specifications.
English Instruction SheetPanel 13

Replacing the Battery

W Warning
To avoid false readings, which could lead to electric shock
or injury, replace the battery as soon as M (low battery
indicator) appears on the display.
Use only a single 9 V battery, properly installed, to power
the Calibrator.
The Calibrator uses a single 9 V, alkaline battery (ANSI/NEDA
1604A or IEC 6LR61). To replace the battery:
1. Press D to turn the Calibrator OFF.
2. Remove the test leads from the terminals.
3. Remove the holster.
4. Lift off the battery door on the back of the Calibrator as shown.
5. Remove the battery.
6. Insert the replacement battery and restore the battery door.
Make sure it is securely in place.
7. Return the Calibrator to its holster.

ADA07F.EPS

HART Mode
To enable or disable the Calibrator's HART mode (Highway-
Addressable Remote Transducer), see the Power-on Option in the
Pushbutton Functions section. Default is HART resistor off.
English Instruction SheetPanel 14

Replaceable Parts
.
.
.

5
9 6
7
8

10

12

11

ADA10F.EPS

Item Description Part No. Qty.

1. Rotary knob 1618022 1
2. Case top 1618355 1
3. Keypad 1612222 1
4. Case bottom 1618005 1
5. Non-skid foot 885884 1
6. Battery. 9 V, Alkaline, ANSI / NEDA 614487 1
1604A or IEC 6LR61
7. Case screws 665098 4
8. Battery door 665106 1
9. CD ROM 2088974 1
10. Test lead set TL75 1
11. Alligator clips AC72 1
12. Holster, yellow C10 1
English Instruction SheetPanel 15

Accuracy Specifications
Accuracy is specified for 1 year after calibration at operating
temperatures of 18 °C to +28 °C and is given as:
±( [ % of reading ]+[ counts ] )
MEASURE V dc
Range: +28 V (+30 V max)
Resolution: 1 mV
Input Impedance: 1 MΩ
Accuracy: ±(0.015 % of reading+2 counts)
MEASURE mA dc
Range: 20 mA (24 mA max)
Resolution: 1 μA
Accuracy: ±(0.015 % of reading+2 counts)
SOURCE / SIMULATE mA dc
Range: 0 mA to 20 mA (24 mA max)
Resolution: 1 μA
Accuracy: ±(0.015 % of reading+2 counts)
Source mode:
Compliance: To 1200 Ω at 20 mA
To 950 Ω at 20 mA in HARTTM Mode
Simulate mode:
External loop voltage requirement: 24 V nominal, 30 V maximum,
12 V minimum
Loop Power
≥24 V
Percent display
-25 % to 125 %
Input / Output Protection
Fuseless protection
English Instruction SheetPanel 16

General Specifications
Maximum voltage between any terminal and earth ground or
between any two terminals:
30 V
Storage temperature:
-40 °C to 60 °C
Operating temperature:
-10 °C to 55 °C
Operating altitude:
3000 meters maximum
Temperature coefficient:
±0.005 % of range per °C for temperatures of -10 °C to 18 °C and
28 °C to 55 °C
Relative humidity:
95 % up to 30 °C;
75 % up to 40 °C
45 % up to 50 °C
and 35 % up to 55 °C
Vibration:
Random 2 g, 5 to 500 Hz
Shock:
1 meter drop test
Safety Compliance:
Complies with IEC 61010-1-95 CAT I, 30 V; CSA C22.2 No. 1010-
992 NRTL; ANSI/ISA S82.02.01-1994.
CE:
Complies with EN61010-1 and EN61326
Power requirements:
Single 9 V battery (ANSI/NEDA 1604A or IEC 6LR61)
Battery life (typical):
SOURCE mode: 18 hours; 12 mA into 500 Ω;
MEASURE / SIMULATE mode: 50 hours
Size:
69.85 mm (W) x 142.87 mm (L) x 50.80 mm (H)
[ 2.75 in (W) x 5.625 in (L) x 2.00 in (H) ]
With holster and Flex-Stand:
76.20 mm (W) x 158.75 mm (L) x 54.61mm (H)
[ 3.00 in (W) x 6.25 in (L) x 2.15 in (H) ]
Weight:
224 g (8 oz); With holster and Stand: 349 g (12.3 oz)
Protection Class:
Pollution Degree II