Fluke 772, 773 Operating Manual
772/773
Milliamp Process Clamp Meter
Calibration Manual
October 2009
© 2009 Fluke Corporation. All rights reserved. Printed in USA. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
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 limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other
provision.
Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.
Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands
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Table of Contents
Title Page
Introduction........................................................................................................ 1
How to Contact Fluke ........................................................................................ 2
Safety Information ............................................................................................. 2
Symbols ............................................................................................................. 4
Specifications..................................................................................................... 4
Electrical Specifications ................................................................................ 4
DC Current Measurement ......................................................................... 4
DC Voltage Measurement (773) ............................................................... 4
DC Voltage Source (773).......................................................................... 5
mA DC IN/OUT (773) .............................................................................. 5
Scaled mA DC Current Output to mA Current Input from the Jaw (773) 5
General Specifications ....................................................................................... 5
Mechanical Specifications............................................................................. 5
Environmental Specifications........................................................................ 5
Standards and Agency Approval Specifications ........................................... 5
Other Specifications ...................................................................................... 5
Basic Maintenance............................................................................................. 6
How to Clean the Meter ................................................................................ 6
Battery Replacement ..................................................................................... 6
Performance Tests.............................................................................................. 7
Required Equipment...................................................................................... 7
How to Test the Batteries .............................................................................. 8
How to Test the Display ................................................................................ 8
Display Hold Test.......................................................................................... 8
Backlight Test................................................................................................ 8
Measurement Spotlight LED Test ................................................................. 8
Accuracy Tests................................................................................................... 9
mA DC Clamp Measure Accuracy Tests ...................................................... 9
mA DC Measure Accuracy Tests .................................................................. 9
Volts DC Measure Accuracy Tests ............................................................... 10
mA DC Source Accuracy Tests..................................................................... 10
Volts DC Source Accuracy Tests .................................................................. 10
Calibration Adjustment...................................................................................... 10
Calibration Error Messages ........................................................................... 12
mA DC Clamp Measure Adjustment Procedure ........................................... 13
mA DC Measure Adjustment Procedure ....................................................... 13
Volts DC Measure Adjustment Procedure .................................................... 13
mA DC Source Adjust Procedure.................................................................. 14
Volts DC Source Adjust Procedure (773 Only) ............................................ 14
Replaceable Parts............................................................................................... 15
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List of Tables
Table Title Page
1. Symbols.................................................................................................................. 4
2. Required Equipment............................................................................................... 7
3. Calibration Functions ............................................................................................. 11
4. Calibration Adjustments......................................................................................... 12
5. Error Messages....................................................................................................... 12
6. Clamp Measure Adjustment Procedure.................................................................. 13
7. mA Measure Adjustment Procedure ...................................................................... 13
8. Volt Measure Adjustment Procedure ..................................................................... 13
9. mA Source Adjustment Procedure......................................................................... 14
10. Volt Source Adjustment Procedure........................................................................ 14
11. Replaceable Parts ................................................................................................... 15
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List of Figures
Figure Title Page
1. Tactile Barrier ........................................................................................................ 3
2. Battery Replacement .............................................................................................. 7
3. Display Test ........................................................................................................... 8
4. Accessing the Calibration Button........................................................................... 11
5. Replaceable Parts ................................................................................................... 16
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