Fluke 773 CAL User manual

772/773

Milliamp Process Clamp Meter

Calibration Manual

October 2009 Rev. 1, 5/19
© 2009 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.

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LIMITED WARRANTY AND LIMITATION OF LIABILITY

This Fluke product will be free from defects in material and workmanship for 3 years (one year for cable and
clamp) from the date of purchase. Parts, product repairs, and services are warranted for 90 days. This
warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does
not apply to fuses, disposable batteries, or to any product which, in Fluke's opinion, has been misused,
altered, neglected, contaminated, or damaged by accident or abnormal conditions of operation or handling.
Fluke warrants that software will operate substantially in accordance with its functional specifications for 90
days and that it has been properly recorded on non-defective media. Fluke does not warrant that software
will be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is
available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the
applicable international price. Fluke reserves the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.

Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair,
or replacement of a defective product which is returned to a Fluke authorized service center within the
warranty period.

To obtain warranty service, 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 difficulty,
postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal
condition of operation or handling, including overvoltage failures caused by use outside the product’s
specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair
costs and obtain authorization before commencing the work. Following repair, the product will be returned to
the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges
(FOB Shipping Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE
FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitati
apply

to every
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other
provision.

buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other

ons and exclusions of this warranty may not

11/99

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Table of Contents

Title Page

Introduction ........................................................................................................ 1

How to Contact Fluke ......................................................................................... 2

Safety Information .............................................................................................. 2

Symbols ............................................................................................................. 5

Specifications ..................................................................................................... 6

Electrical Specifications ................................................................................. 6

Mechanical Specifications ............................................................................. 7

Environmental Specifications ........................................................................ 7

Miscellaneous Specifications ......................................................................... 7

Basic Maintenance ............................................................................................. 9

How to Clean the Meter ................................................................................. 9

Battery Replacement ..................................................................................... 9

Performance Tests ............................................................................................. 10

Required Equipment ...................................................................................... 10

How to Test the Batteries .............................................................................. 11

How to Test the Display ................................................................................. 11

Display Hold Test ........................................................................................... 11

Backlight Test ................................................................................................ 11

Measurement Spotlight LED Test .................................................................. 11

Accuracy Tests ................................................................................................... 12

mA DC Clamp Measure Accuracy Tests ....................................................... 12

mA DC Measure Accuracy Tests .................................................................. 12

Volts DC Measure Accuracy Tests ................................................................ 13

mA DC Source Accuracy Tests ..................................................................... 13

Volts DC Source Accuracy Tests .................................................................. 13

Calibration Adjustment ....................................................................................... 14

Calibration Error Messages ........................................................................... 15

mA DC Clamp Measure Adjustment Procedure ............................................ 16

mA DC Measure Adjustment Procedure ....................................................... 16

Volts DC Measure Adjustment Procedure ..................................................... 16

mA DC Source Adjust Procedure .................................................................. 17

Volts DC Source Adjust Procedure (773 Only).............................................. 17

Replaceable Parts .............................................................................................. 18

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Introduction

To prevent electrical shock or personal injury, do not do the
calibration verification tests or calibration procedures in this
manual unless you are qualified.

The data in this manual is for qualified personnel only.

This manual tells you about verification and adjustment procedures for the
772/773 Milliamp Process Clamp Meter (referred to in this manual as the Meter
or Product). The Meter features closed-case calibration to use with reference
sources. It measures the reference signals, calculates the correction factors, and
keeps them in memory. Calibration adjustment is required after a repair, or if the
Meter fails a performance test.

This manual explains:

XW Warning

• Precautions

Specificatio

•

Basic Maintenance

•

• Calibration/Verification Procedure

•

Replaceable Parts and Accessori

For complete use instru

and Safety Information

ns

ctions, refer to the 772/773 Instruction Sheet.

es

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772/773

Calibration Manual

Safety Information

A Warning identifies conditions and procedures that are dangerous to the user.
A Caution identifies conditions and procedures that can cause damage to the
Product or the equipment under test.

XW Warning

To prevent possible electrical shock, fire, or personal injury:

• Carefully read all instructions.

• Do not alter the Product and use only as specified, or the

protection supplied by the Product can be compromised.

• Read all safety information before you use the Product.

• Do not use in CAT III or CAT IV environments without the

protective cap installed on test probe. The protective cap
decreases the exposed probe metal to <4 mm. This
decreases the possibility of arc flash from short circuits.

• Comply with local and national safety codes. Use personal
protective equipment (approved rubber gloves, face
protection, and flame-resistant clothes) to prevent shock
and arc blast injury where hazardous live conductors are
exposed.

• Do not touch voltages >30 V ac rms, 42 V ac peak, or
60 V dc.

• Remove the batteries if the Product is not used for an
extended period of time, or if stored in temperatures above
50 °C. If the batteries are not removed, battery leakage may
result.

2

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Milliamp Process Clamp Meter

• The battery door must be closed and locked before you
operate the Product.

Safety Information

• Replace the batteries w
to prevent incorrect m

• Do not apply

more than the rated voltage, betwee

terminals or betw

• Measure a
operates correctl

known volt

y.

• Use the Clamp only on

hen the low battery indicator shows

easurements.

n the

ach terminal and earth ground.

een e

age first to make sure that the Product

insulated conductors. Use caution
around bare conductors or bus bars. To prevent electrical
shock, do not touch the conductor.

• Do not use test leads if the

y are da

maged. Examine the test
leads for damaged insulation, exposed metal, or if the wear
indicator show

Hold the Product behind the tactile barrier. See Figure 1.

•

s. Check test lead continuity.

• Keep fingers behind the finger guards on the probes.

• Remove all probes, test leads, and accessories before the

battery

doo

r is opened.

• Remove all probes, test leads, and accessories that are not
necessary for the measurement.

• Do not exceed the Measurement Category (CAT) rating of
the lowest rated individual component of a Product, probe,
or accessory

.

• Do not use the Product if it operates incorrectly.

•

Disable the Product if it is damaged.

• Do not make connections on hazardous live conductors in
damp or wet environments.

WCaution

To prevent damage to the Meter, do not open it. Do not use a
solvent to clean the Meter, and do not put the Meter in water.

3

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772/773

gep

Calibration Manual

Number Description

 Detachable clamp

 Tactile Barrier docked and un-docked.

Figure 1. Tactile Barrier

06.emf

4

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Symbols

Table 1 is a list of the symbols that are on the Meter or in this manual.

Table 1. Symbols

Symbol Explanation

 Consult user documentation.

Milliamp Process Clamp Meter

Symbols

W

WARNING. RISK OF DANGER.

X WARNING. HAZARDOUS VOLTAGE. Risk of electric shock.

 Power on/off

-

Do not apply around or remove from uninsulated hazardous live conductors without
taking additional protective measures.

T Double Insulated

 DC (Direct Current)





P

Earth Ground

Battery

Conforms to European Union directives.

 Conforms to relevant Australian Safety and EMC standards.

)





Certified by CSA Group to North American safety standards.

Measurement Category II is applicable to test and measuring circuits connected directly
to utilization points (socket outlets and similar points) of the low-voltage MAINS
installation.

Measurement Category III is applicable to test and measuring circuits connected to the
distribution part of the building’s low-voltage MAINS installation.



~

Measurement Category IV is applicable to test and measuring circuits connected at the
source of the building’s low-voltage MAINS installation.

This product complies with the WEEE Directive marking requirements. The affixed label
indicates that you must not discard this electrical/electronic product in domestic
household waste. Product Category: With reference to the equipment types in the WEEE
Directive Annex I, this product is classed as category 9 "Monitoring and Control
Instrumentation" product. Do not dispose of this product as unsorted municipal waste.

5

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Calibration Manual

Specifications

Electrical Specifications

DC Current Measurement
With Jaw

Ranges ........................................... 0 mA to 20.99 mA, 21 mA to 100 mA

Resolution ................................. 0.01 mA, 0.1 mA

Accuracy .................................... 0.2 % + 5 counts, 1 % + 5 counts

In Circuit

Range ........................................ 0 mA to 24 mA

Resolution ................................. 0.01 mA

Accuracy .................................... 0.2 % + 2 counts

Current Source

Range ........................................ 0 mA to 24 mA

Resolution ................................. 0.01 mA

Accuracy .................................... 0.2 % + 2 counts

mA Drive .................................... 24 mA into 1000 Ω

Current Simulate

Range ........................................ 0 mA to 24 mA

Resolution ................................. 0.01 mA

Accuracy .................................... 0.2 % + 2 counts

Maximum Voltage ...................... 50 V

DC Voltage Measurement (773)

Range ........................................ 0-30 V

Resolution .................................. 0.01 V

Accuracy .................................... 0.2 % + 2 counts

DC Voltage Source (773)

Range ........................................ 0 V to 30 V

Resolution ................................. 0.01 V

Accuracy .................................... 0.2 % + 2 counts

mA Drive .................................... 2 mA maximum all conditions

mA DC IN/OUT (773)

Sourcing range .......................... 0 mA to 24 mA

Sourcing resolution .................... 0.01 mA

Sourcing accuracy ..................... 0.2 % + 2 counts

Measurement range .................. 0 mA to 24 mA

Measurement resolution ............ 0.01 mA

Measurement accuracy ............. 1 % FS

Scaled mA DC Current Output to mA Current Input from the Jaw (773)

Range ........................................ 0 mA to 24 mA

Resolution ................................. 0.01 mA

Accuracy .................................... 1 % FS

Response speed ........................ 2x/second

DC Loop Power ......................... 24 V

Influence of Earth’s Field ........... <0.20 mA

Batteries .................................... 4 1.5 V, Alkaline, IEC LR6

Working hours ........................... 12 hours @ 12 mA sourced into 500 Ω

6

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Milliamp Process Clamp Meter

Mechanical Specifications

Size (H X W X L) ............................ 43.7 mm x 70 mm x 246.2 mm

Weight ............................................. 410 g

Environmental Specifications

Operating Temperature ................... -10 °C to 50 °C

Storage Temperature ...................... -25 °C to 60 °C

Operating Humidity ......................... <90 % RH @ <30 °C

<75 % RH @ 30 °C to 50 °C

Operating Altitude ........................... 0 m to 2000 m

IP Rating ......................................... IP 40

Temperature Coefficients ................ 0.1 (/ °C X Specified accuracy for Temperature <18 °C or >28 °C)

Safety .............................................. IEC 61010-1, Pollution degree 2

IEC 61010-2-032: O, other circuits not directly connected to mains.

Electromagnetic Compatibility (EMC)

International .................................... IEC 61326-1: Portable Electromagnetic Environment

IEC 61326-2-2
CISPR 11: Group 1, Class A

Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio frequency
energy that is necessary for the internal function of the equipment itself.
Class A: Equipment is suitable for use in all establishments other than domestic and those directly
connected to a low voltage power supply network that supplies buildings used for domestic purposes.
There may be potential difficulties in ensuring electromagnetic compatibility in other environments
due to conducted and radiated disturbances.
Caution: This equipment is not intended for use in residential environments and may not provide
adequate protection to radio reception in such environments.
Emissions that exceed the levels required by CISPR 11 can occur when the equipment is connected
to a test object.
The equipment may not meet the immunity requirements of this standard when test leads and/or test
probes are connected.
For current measurement with jaw, add 1 mA to specification for EMC fields from 1 V/m to 3 V/m.

Specifications

Miscellaneous Specifications

Power Requirements ...................... Four AA batteries, Alkaline, IEC LR6

Automatic Time-out (Power) ........... 15 minutes ±1 minute

Automatic Time-out (Backlight) ....... 2 minutes ±10 seconds

Automatic Time-out

(Measurement Spotlight) ................. 2 minutes ±10 seconds

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Calibration Manual

h

X

Static Awareness

Semiconductors and integrated circuits can be damaged by electrostatic
discharge during handling. This notice explains how to minimize damage to
these components.

1.Understand the problem.
Learn the guidelines for proper handling.

2.
Use the proper procedures, packaging, and bench techniqu

3.

Follow these practice

To prevent electric shock or personal injury. De­energize the product and all active circuits before
opening a product enclosure, touching or handling
any PCBs or components

s to minimize damage to static sensitive parts.

XW Warning

.

h

es.

• Minimize handling.

• Handle static-sensit

parts by non-conductive
edges.

•

Do not slide static­sensitive components
over any surface.

When remo

•

assemblies, handle only
by non-conductive
edges.

•Never touch open-edge

connectors except at a
static-free work station.

ving plug-in

ive

• Keep parts in the original
containers u
use.

•

Use static
containers for handling
and transport.

•Avoid plastic, vinyl, and

Styrofoam
area.

ntil ready for

shielding

®

in the work

•

Handle static-sensit
parts only at a static­free work st

• Put shorting
the edge of the
connector to help
protect insta
sensitive parts.

Use anti-sta

•

solder extraction tools
only.

•Use grounded-tip

soldering irons only.

ation.

strips on

lled static-

tic type

ive

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Basic Maintenance

To prevent possible electric shock, fire, or personal injury:

• Remove the input signals before you clean the Product.

• Repairs or servicing not covered in this manual should be

performed

• Replace all batteries with fresh batteries of the same
manufacturer and ty

only by qua

XWWarning

lified personnel.

pe to prevent battery leak

Milliamp Process Clamp Meter

Basic Maintenance

age.

How to Cle

Battery Replacement

an the Meter

To prevent damage to the Meter, do not use aromatic
hydrocarbons or chlorinated solvents when you clean the
Meter. These solutions react with the plastics used in the Meter.

Clean the instrument case with a damp cloth and mild detergent.

To prevent possible electric shock, fire, or personal injury:

• To avoid false readings, that could lead to possible electrical
shock or personal injury, replac
the battery

• Remove test leads before changing the batteries.

To replace the batteries, see Figure 2:

1. Turn the Meter off.

2.

Use a flat-head screwdriver to loosen the battery compartment door screw
and remove the door from the case bottom.

Remove the batteries.

3.

W Caution

XWWarning

indicator (

e the batteries as soon as

) appears.

s

4.

Replace the

5.

Reattach the battery compartment door to the case bottom and tighten t
screws.

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he

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772/773

Calibration Manual

Figure 2. Battery Replacement

Performance Tests

XWWarning

To prevent electrical shock, personal injury, or fire:

• Repairs or Meter servicing must be done only by
personnel.

• Do not do the verification tests or calibration adjustment in
this manual unless qualified.

The tests th

at follow verify the functions of the Meter. If the Meter fails the
verification tests, repair is necessary. For Meter servicing, see How to Contact
Fluke.

Required Equipment

Required equipment for the performance tests is in Table 2. If the recommended
models are not available, equipment with equivalent specifications can be used.

Table 2. Required Equipment

Equipment Minimum Required Characteristics Recommended Model

Calibrator DC milliamps:

0-24.00 mA = ±0.073 %

24.0-100.0 mA = ±0.375 %

DC Volts:

0-30.00 V = ±0.267 %

qualified

Fluke 55xxA

gep02.emf

DMM DC Current:

0-24.00 mA = ±0.375 %

DC Volts:

0-10 V = ±0.1 %

Lab Supply 6 Vdc ±-0.5 V -

10

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Fluke 88xxA

How to Test the Batteries

Prior to performing the following tests, check the batteries with a multimeter and
replace as necessary. See Battery Replacement.

How to Test the Display

1.

Push and hold  while powering

Milliamp Process Clamp Meter

Performance Tests

on the Meter.

2.

Compare th

3.

Examine all display segments for clarity and contrast.

e Meter display to Figure 3.

MAX

Display Hold Test

To prevent possible electrical shock, fire, or personal injury:

• Be aware of the measurement being taken when using
Displa
will not change when d

• Do not use the HOLD function to measure unknown
potentials. When HOL
change when a different potential is measured.

 to activate Display Hold mode. The display shows  and the

Push
display freezes. Push  a second time to exit and resume normal operation.

Backlight Test

Push  to turn the backlight on and off. To extend battery life, the backlight
automatically stops after 2 minutes.

Measurement Spotlight LED Test

Push  to activate the Measurement Spotlight LED. To extend battery life, the
light automatically stops after 2 minutes.

y HOLD. When Display HOLD is activated, the display

Figure 3. Display Test

XW Warning

ifferent currents are applied.

D is turned on, the display does n

gep07.emf

ot

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Calibration Manual

Accuracy Tests

mA DC Clamp Measure Accuracy Tests

Accuracy specifications are valid for 1 year after calibration adjustment when
measured at an operation temperature of 18 °C to 28 °C. Allow the Meter to
stabilize at room temperature prior to performing the accuracy tests.

The following tables list the required performance test points for verifying Meter
accuracy. Zero the Meter prior to completing each measurement point.

Step Calibrator Output

1 4.00 mA 3.94 mA 4.06 mA

2 -4.00 mA -4.06 mA -3.94 mA

3 12.00 mA 11.03 mA 12.07 mA

4 -12.00 mA -12.07 mA -11.03 mA

5 20.00 mA 19.01 mA 20.09 mA

6 -20.00 mA -20.09 mA -10.01 mA

7 100.0 mA 98.5 mA 101.5 mA

8 -100.0 mA -101.5 mA -98.5 mA

UUT Meter Reading Limit

Low High

mA DC Measure Accuracy Tests

Step Calibrator Output

1 0.00 mA -0.02 mA 0.02 mA

2 4.00 mA 3.97 mA 4.03 mA

3 -4.00 mA -4.03 mA -3.97 mA

UUT Meter reading limit

Low High

4 8.00 mA 7.96 mA 8.04 mA

5 -8.00 mA -8.04 mA -7.96 mA

6 12.00 mA 11.96 mA 12.04 mA

7 -12.00 mA -12.04 mA -11.96 mA

8 20.00 mA 19.94 mA 20.06 mA

9 -20.00 mA -20.06 mA -19.94 mA

10 24.00 mA 23.93 mA 24.07 mA

11 -24.00 mA -24.07 mA -23.93 mA

12

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Volts DC Measure Accuracy Tests

Milliamp Process Clamp Meter

Accuracy Tests

Step Calibrator Output

1 0.00 V -0.02 V 0.02 V

2 10.00 V 9.96 V 10.04 V

3 -10.00 V -10.04 V -9.96 V

4 20.00 V 19.94 V 20.06 V

5 -20.00 V -20.06 V -19.94 V

6 30.00 V 29.92 V 30.08 V

7 -30.00 V -30.08 V -29.92 V

UUT Meter Reading Limit

Low High

mA DC Source Accuracy Tests

Step UUT Meter Output

1 0.00 mA -0.02 mA 0.02 mA

2 4.00 mA 3.97 mA 4.03 mA

3 8.00 mA 7.96 mA 8.04 mA

4 12.00 mA 11.96 mA 12.04 mA

DMM Reading Limit

Low High

5 20.00 mA 19.94 mA 20.06 mA

6 24.00 mA 23.93 mA 24.07 mA

Volts DC Source Accuracy Tests

Step UUT Meter Output

1 0.00 V -0.02 V 0.02 V

2 2.50 V 2.47 V 2.53 V

3 5.00 V 4.97 V 5.03 V

4 7.50 V 7.46 V 7.54 V

5 10.00 V 9.96 V 10.04 V

DMM Reading Limit

Low High

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Calibration Manual

Calibration Adjustment

The Meter features closed-case calibration adjustment with a known reference
source. The Meter measures the applied reference source, calculates correction
factors, and keeps the correction factors in nonvolatile memory.

Before you start calibration adjustment, let the Meter stabilize to room
temperature.

To turn on Calibration mode:

Remove the batteries and substitute with a lab supply set to

1.

Open the battery door. The calibration button is usually hidden by the factory

2.

6 V dc.

calibration seal.

3.

Use a small probe and push the calibration button longer tha

n 2 seconds.

See Figure 4.

Calibration Button

Figure 4. Accessing the Calibration Button

gep01.emf

There are five Meter functions to adjust:

1.

Clamp mea

2.

3.

4.

5.

14

measure

mA

V

olt measure (773 only)

m

A source

Volt source (773 only)

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Milliamp Process Clamp Meter

Table 3 shows the Meter buttons you use to select a function to be calibrated.

Table 3. Calibration Functions

Button Calibration Function Description

 Engages mA function
 Identifies V dc function
 Identifies Clamp function

Calibration Adjustment



Toggles between measure and source modes

Table 4 shows the Meter buttons you use to adjust the Meters calibration.

Table 4. Calibration Adjustments

Button Calibration Adjustment Description









A short button push (1 second) changes the Meter to the first calibration step

A long button push exits the Meters calibration mode

Adjust source output in large steps

Adjust source output in small steps

 Forward to subsequent calibration step

The Meter display shows the value in each adjustment step.

• In Measure mode, the shown value is the calibrator input.

• In Source mode, the show

To exit Calibration mode:

n value is the Meter output.

Push the calibration butt

on a second time to keep new calibration constants and

exit calibration mode.

Calibration Error Messages

The calibration error messages that the Meter can show are in Table 5. Steps to
remove the messages are also shown in the table.

Table 5. Error Messages

Error Message Cause of Error Removal Steps

Cal Meter not calibrated, use default parameter Do all adjustments

Err Code area checksum error Meter repair is necessary

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Calibration Manual

mA DC Clamp Measure Adjustment Procedure

Step Meter Display Calibrator Output Procedure

1 0.00 mA 0.00 mA Stop for 10 seconds, push 

2 -20.00mA -20.00 mA Push 

3 0.00mA 0.00 mA Stop for 10 seconds, push 

4 20.00mA 20.00 mA Push 

5 0.00 mA 0.00 mA Stop for 10 seconds, push 

6 -100.00mA -100.00 mA Push 

7 0.00mA 0.00 mA Stop for 10 seconds, push 

8 10.00mA 100.00 mA Push 

9 Save -- Push 

To adjust the Clamp Measure function, use the Calibrator to apply the necessary
Meter input and do the steps in Table 6.

Table 6. Clamp Measure Adjustment Procedure

mA DC Measure Adjustment Procedure

To adjust the mA Measure function, use the Calibrator to apply the necessary
Meter input and do the steps in Table 7.

Table 7. mA Measure Adjustment Procedure

Step Meter Display Calibrator Output Procedure

1 -20.00 mA -20.00 mA Push 

2 0.00 mA 0.00 mA Push 

3 20.00 mA 20.00 mA Push 

4 Save -- Push 

Volts DC Measure Adjustment Procedure

To adjust the Volt Measure function, use the Calibrator to apply the necessary
Meter input and do the steps in Table 8.

Table 8. Volt Measure Adjustment Procedure

Step Meter Display Calibrator Output Procedure

1 -30.00V -30.00 V Push 

2 0.00V 0.00 V Push 

3 30.00V 30.00 V Push 

4 Save -- Push 

16

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Milliamp Process Clamp Meter

mA DC Source Adjust Procedure

To adjust the mA Source function, use the Calibrator to apply the necessary
Meter input and do the steps in Table 9.

Table 9. mA Source Adjustment Procedure

Step Meter LCD display Action

1 4.00 mA Adjust until Meter output is 4.00 mA, push 

2 20.00 mA Adjust until Meter output is 20.00 mA, push 

4 Save Push 

Volts DC Source Adjust Procedure (773 Only)

To adjust the Volt Source function, use the Calibrator to apply the necessary
Meter input and do the steps in Table 10.

Table 10. Volt Source Adjustment Procedure

Step Meter LCD display Action

1 0.00 V Adjust until Meter output is 0.00 V, push 

Calibration Adjustment

2 10.00 V Adjust until Meter output is 10.00 V, push 

4 Save Push 

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Calibration Manual

Replaceable Parts

Table 11 is a list of replaceable parts.

Table 11. Replaceable Parts

1

2

3

5

6

11

12

Item Description Quantity Part or Model Number

13

4

8

7

1

4

9

10

 AA Batteries, 1.5 V 4 376756

 Absorber 1 3369914

 Battery Door 1 3350978

 Fastener 2 948609

 Soft Carrying Case 1 3351060

 Instruction Sheet 1

 Calibration Manual 1

 TL940 Mini Hook with Test Lead 1 Set 1616705

 TL75- Test Leads 1 Set 855742

 AC175 Alligator Clips 1 Set 4101772

 Hook and Loop Strip 1 3031302

 TPAK, Strap 17 inches 1 669967

 Hanger 1 3375746

 *Jaw Assembly 1 Set 3350957

*Re-calibration is required after jaw assembly is replaced.

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