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787B CAL
User manual
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Fluke 787B CAL User manual

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Page 1
789/787B
ProcessMeter™

Calibration Manual

September 2002, Rev. 2, 1/17
© 2002-2017 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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Page 2
LIMITED WARRANTY AND LIMITATION OF LIABILITY
Each Fluke product is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years and begins on the date of shipment. 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.
11/99
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Table of Contents

Title Page
Introduction ........................................................................................................ 1
How to Contact Fluke ......................................................................................... 1
Safety Information .............................................................................................. 2
Specifications ..................................................................................................... 5
Required Equipment .......................................................................................... 9
Basic Maintenance ............................................................................................. 10
How to Clean ................................................................................................. 10
Battery Replacement ..................................................................................... 10
Battery Life ..................................................................................................... 11
Check and Replace Fuses............................................................................. 12
Performance Verification .................................................................................... 12
Preparation .................................................................................................... 13
Loop Power Test (789 only) .......................................................................... 14
Current Sourcing Test .................................................................................... 15
Current Measurement Test ............................................................................ 16
Diode Function Test ....................................................................................... 17
Continuity Function Test ................................................................................ 19
Resistance Measurement Test ...................................................................... 20
DC Millivolts Measurement Test .................................................................... 22
DC Volts Measurement Tests ........................................................................ 23
AC Volts Measurement Test .......................................................................... 24
Frequency Measurement Test ....................................................................... 25
Calibration Adjustment ....................................................................................... 26
Preparation .................................................................................................... 26
Procedure for Models with Firmware Version <2.0 ....................................... 27
AC Voltage Adjustment ............................................................................. 27
Frequency Adjustment .............................................................................. 28
DC Voltage Adjustment ............................................................................. 29
DC Millivolts Adjustment ............................................................................ 29
Ohms Adjustment ...................................................................................... 30
Diode Adjustment ...................................................................................... 30
Milliamps DC Adjustment .......................................................................... 31
Amps DC Adjustment ................................................................................ 31
Amps AC Adjustment ................................................................................ 32
Milliamps Output Adjustment ..................................................................... 32
Procedure for Models with Firmware Version ≥2.0 ....................................... 33
Calibration Adjustment Counter ................................................................ 33
Calibration Adjustment Password ............................................................. 33
How to Change the Password ................................................................... 33
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789/787B
Calibration Manual
How to Restore the Default Password ...................................................... 35
Meter Keys Used in the Calibration Steps ................................................ 36
Calibration Adjustment .............................................................................. 36
Replacement Parts and Accessories ................................................................. 38
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Introduction

The information provided in this manual is for the use of qualified personnel only. Do not perform the calibration verification tests or calibration procedures described in this manual unless you are qualified to do so.
The ProcessMeter™ contains parts that can be damaged by static discharge. Follow the standard practices for handling static sensitive devices.
The Calibration Manual for the 789/787B ProcessMeter (Meter, Product, or UUT) provides the following information:
Precautions and Safety information
•
• Specifications
• Basic maintenance (cleaning, replacing the batteries and fuses)
• Calibration verification test procedures
• Calibration adjustment procedures
• Accessories and replaceable parts
All illustrations in this manual show the 789. For complete operating instructions, refer to the 789/787B ProcessMeter Users Manual (provided on CD-ROM with the Product).
 Warning
Caution
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789/787B
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.
International symbols used on the Meter and in this manual are explained in Table 1.
 Warning
To prevent possible electrical shock, fire, or personal injury:
• Read all safety information before y
• Carefully
• Do not alter the Product and use only
by
the Product can be compromised.
• 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 can damage the Product.
• The battery door must be closed and locked before you operate the Product.
• Replace the batteries when the low battery indicator shows to prevent incorrect measurements.
• 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 apply more than the rated voltage, between the terminals or between each terminal and earth ground.
• Do not work alone.
• Limit operation to the specified measurement category, voltage, or
amperage ratings.
• Use Product-approved measurement category (CAT), voltage, and amperage rated accessories (probes, test leads, and adapters) for all measurements.
• Measure a known voltage first to make sure that the Product operates correctly.
• Use the correct terminals, function, and range for measurements.
• Do not touch voltages >30 V ac rms, 42 V ac peak, or 60 V dc.
• Do not use the Product around explosive gas, vapor, or in damp or wet
environments.
• Do not use the Product if it operates incorrectly.
• Examine the case before you use the Product. Look for cracks or missing
plastic. Carefully look at the insulation around the terminals.
• Do not use test leads if they are damaged. Examine the test leads for damaged insulation, exposed metal, or if the wear indicator shows. Check test lead continuity
•
Keep fingers behind the finger guards on the probes.
• Only use probes, test leads, and accessories that have the same measurement category, voltage, and amperage ratings as the Product.
read all instructions.
.
ou use the Product.
as specified, or the protection supplied
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• Remove all probes, test leads, and accessories before the battery door 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 test leads if they are damaged. Examine the test leads for damaged insulation and measure a known voltage.
• Do not use a current measurement as an indication that a circuit is safe to touch. A voltage measurement is necessary to know if a circuit is hazardous.
• Do not use the Product if it is altered or damaged.
• Do not use in CAT III or CAT IV environments without the protective cap
installed on test probes. The protective cap decreases the exposed probe metal to <4 mm. This decreases the possibility of arc flash from short circuits.
Caution
To prevent damage to the Product or the test equipment:
ProcessMeter™
Safety Information
•
Disconnect the power and discharge all high voltage capacitors before testing resistance, diodes, or continuity.
• Use the proper terminals, switch setting, and range for the measurement or sourcing applications.
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789/787B
Calibration Manual
Symbol Description Symbol Description
Table 1. International Symbols
 
WARNING. RISK OF DANGER.
Consult user documentation.
Conforms to European Union directives
Certified by CSA Group to North American safety standards.
AC (Alternating Current)
DC (Direct Current)
Battery
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.
WARNING. HAZARDOUS VOLTAGE. Risk of electric shock.
Conforms to relevant South Korean EMC Standards
Minimum fuse interrupt rating.
Conforms to relevant Australian Safety and EMC standards.
Earth
Fuse
Double Insulated
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Specifications

• All specifications apply from +18 °C to +28 °C unless stated otherwise.
• All specifications assume a 5-minute warm-up period.
• The standard specification interval is 1 year.
Note
“Counts” refers to the number of increments or decrements of the least significant digit.
DC Volts Measurement
Range (V dc) Resolution Accuracy, ±(% of Reading + Counts)
4.000 0.001 V 0.1 % + 1
40.00 0.01 V 0.1 % + 1
400.0 0.1 V 0.1 % + 1
1000 1 V 0.1 % + 1
ProcessMeter™
Specifications
Input impedance: 10 MΩ (nominal), <100 pF Normal mode rejection ratio: >60 dB at 50 Hz or 60 Hz Common mode rejection ratio: >120 dB at dc, 50 Hz, or 60 Hz Overvoltage protection: 1000 V
DC Millivolts Measurement
Range (mV dc) Resolution Accuracy, ±(% of Reading + Counts)
400.0 0.1 mV 0.1 % + 2
AC Volts Measurement
Range (ac) Resolution
400.0 mV 0.1 mV 0.7 % + 4 1.2 % + 4 7.0 % + 4
4.000 V 0.001 V 0.7 % + 2 1.2 % + 4 7.0 % + 4
40.00 V 0.01 V 0.7 % + 2 1.2 % + 4 7.0 % + 4
400.0 V 0.1 V 0.7 % + 2 1.2 % + 4 7.0 % + 4
1000 V 1 V 0.7 % + 2 1.2 % + 4 7.0 % + 4
Specifications are valid from 5 % to 100 % of amplitude range. AC conversion: true rms Maximum crest factor: 3 (between 50 and 60 Hz) For non-sinusoidal waveforms, add Input impedance: 10 M Common mode rejection ratio: >60 dB at dc, 50 Hz, or 60 Hz
Ω
(nominal), <100 pF, ac-coupled
50 Hz to 60 Hz 45 Hz to 200 Hz 200 Hz to 500 Hz
±
(2 % reading + 2 % f.s.) typical
Accuracy, ±(% of Reading + Counts)
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789/787B
Calibration Manual
AC Current Measurement
Range
45 Hz to 2 kHz
1.000 A (Note) 0.001 A 1 % + 2 1.5 V/A
Note: 440 mA continuous, 1 A 30 seconds maximum
Specifications are valid from 5 % to 100 % of amplitude range. AC conversion: true rms Maximum crest factor: 3 (between 50 and 60 Hz) For non-sinusoidal waveforms, add Overload protection 440 mA, 1000 V fast-blow fuse
Resolution
±
( 2 % reading + 2 % f.s.) typical
±(% of Reading + Counts)
Accuracy,
Typical Burden
DC Current Measurement
Range Resolution
30.000 mA 0.001 mA 0.05 % + 2 14 mV/mA
1.000 A (Note) 0.001 A 0.2 % + 2 1.5 V/A
Note: 440 mA continuous, 1 A 30 seconds maximum
Overload protection: 440 mA, 1000 V fast-blow fuse
±(% of Reading + Counts)
Accuracy
Typical Burden
Ohms Measurement
Range Resolution Measurement Current
±(% of Reading + Counts)
Voltage
Voltage
Accuracy
400.0 Ω 0.1 Ω 310 μA 0.2 % + 2
4.000 kΩ 0.001 kΩ 31 μA 0.2 % + 1
40.00 kΩ 0.01 kΩ 2.5 μA 0.2 % + 1
400.0 kΩ 0.1 kΩ 250 nA 0.2 % + 1
4.000 MΩ 0.001 MΩ 250 nA 0.35 % + 3
40.00 MΩ 0.01 MΩ 125 nA 2.5 % + 3
Overload protection: 1000 V Open circuit voltage: <3.9 V
Frequency Counter Accuracy
Range Resolution
199.99 Hz 0.01 Hz 0.005 % + 1
1999.9 Hz 0.1 Hz 0.005 % + 1
19.999 kHz 0.001 kHz 0.005 % + 1
Display updates 3 times/second at >10 Hz
±(% of Reading + Counts)
Accuracy
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Frequency Counter Sensitivity
Minimum Sensitivity (rms Sinewave)
Input Range
AC
400 mV 150 mV (50 Hz to 5 kHz) 150 mV
4 V 1 V 1 V
40 V 4 V 4 V
400 V 40 V 40 V
1000 V 400 V 400 V
*Usable 0.5 Hz to 20 kHz with reduced sensitivity.
6
10
VHz max
Diode Test and Continuity Test
Diode test indication .......................................... Displays voltage drop across device, 2.0 V full scale. Nominal test
Continuity test indication ..................................... Continuous audible tone for test resistance <100 Ω
Open circuit voltage ............................................ 2.9 V
Short circuit current ............................................. 310 μA typical
Overload protection............................................. 1000 V rms
Loop Power Supply Voltage ................................ 24 V, Short Circuit protected
DC Current Output
Source mode:
Span ............................................................. 0 mA or 4 mA to 20 mA, with overrange to 24 mA
Accuracy ....................................................... 0.05 % of span
Compliance voltage ...................................... 28 V with battery voltage >~4.5 V
Simulate Mode
Span ............................................................. 0 mA or 4 mA to 20 mA, with overrange to 24 mA
Accuracy ....................................................... 0.05 % of span
Loop voltage ................................................. 24 V nominal, 48 V maximum, 15 V minimum
Compliance voltage ...................................... 21 V for 24 V supply
Burden voltage .............................................. <3 V
current 0.3 mA at 0.6 V. Accuracy ±(2 % + 1 count).
5 Hz to 5 kHz*
DC
(approximate trigger level 5 % of full scale)
ProcessMeter™
Specifications
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789/787B
Calibration Manual
General Specifications
Maximum Voltage between
any Terminal and Earth Ground .......................... 1000 V
Fuse Protection for
mA inputs ............................................................... 0.44 A, 1000 V IR 10 kA
Power
Battery Type ........................................................ IEC LR6 (AA Alkaline)
Quantity ............................................................... 4
Temperature
Operating ............................................................ -20 °C to +55 °C
Storage ............................................................... -40 °C to +60 °C
Altitude
Operating ............................................................ ≤2000 m
Storage ............................................................... ≤12 000 m
Frequency Overload Protection ........................... 10
Temperature coefficient
Measurements .................................................... 0.05 x specified accuracy per °C for temperatures <18 °C or >28 °C
Source................................................................. 0.1 x specified accuracy per °C for temperatures <18 °C or >28 °C
Relative humidity .................................................. 95 % up to 30 °C, 75 % up to 40 °C, 45 % up to 50 °C, and 35 % up to
Vibration ................................................................ Random 2g, 5 to 500 Hz
Shock ..................................................................... 1 meter drop test
Size ......................................................................... 10.0 cm X 20.3 cm X 5.0 cm (3.94 in X 8.00 in X 1.97 in)
Weight .................................................................... 610 g (1.6 lb)
Safety
General ............................................................... IEC 61010-1: Pollution Degree 2
Measurement ...................................................... IEC 61010-2-033: CAT IV 600 V / CAT III 1000 V
Electromagnetic Compatibility (EMC) ................. Accuracy for all ProcessMeter functions is not specified in RF field
International ........................................................ IEC 61326-1: Portable Electromagnetic Environment; IEC 61326-2-2
Korea (KCC) ....................................................... Class A Equipment (Industrial Broadcasting & Communication
USA (FCC) .......................................................... 47 CFR 15 subpart B. This product is considered an exempt device per
6
V Hz max
55 °C
>3 V/m
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.
Equipment)
Class A: Equipment meets requirements for industrial electromagnetic wave equipment and the seller or user should take notice of it. This equipment is intended for use in business environments and not to be used in homes.
clause 15.103.
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Required Equipment

Equipment and software required to perform the procedures in this manual are identified in Table 2.
If the recommended equipment model is not available, in some cases other equipment can be substituted as long as it meets the specifications indicated.
To avoid safety hazards and equipment damage during the calibration procedure, use the specified calibration equipment listed in Table 2. Using unspecified equipment can jeopardize the calibration verification test and pose safety hazards.
Unless otherwise indicated, all connection diagrams for the calibration verification tests in this manual showing a calibrator or digital multimeter use a Fluke 5522A calibrator, Fluke 8508A Reference Multimeter, Keysight 3458A DMM, or equivalent.
If you are using a different calibrator or DMM, make the connections appropriate for that instrument.
ProcessMeter™
Required Equipment
 Warning
Note
Table 2. Required Equipment and Software
Equipment Minimum Specifications Recommended Model
Calibration Source No Substitute Fluke Model 5522A or
equivalent
Digital Multimeter No Substitute Fluke 8508A,
Keysight 3458A
Test Leads, low leakage, RG-58/U type
1-kΩ shunt 1 kΩ, 1 %, 2 watts, Low TC is preferable ---
Leakage resistance > than 1.0 x 1013 Ω at 45 °C and 75 % relative humidity
Fluke 5440A-7002 Low Thermal Test Leads
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789/787B
Calibration Manual

Basic Maintenance

How to Clean

Battery Replacement

 Warning
To prevent electrical shock or damage, never allow water inside the case of the ProcessMeter.
If the ProcessMeter requires cleaning, wipe it down with a cloth that is lightly dampened with water or a mild detergent.
Caution
Do not use aromatic hydrocarbons, chlorinated solvents, or methanol­based fluids when wiping down the ProcessMeter. To avoid damaging the case, never apply solvents to the case of the ProcessMeter.
Warning
For safe operation and maintenance, repair the Product before use if the battery leaks.
To replace the batteries, see Figure 1:
1. Remove the test leads and turn the Meter OFF.
2. With a standard blade hand screwdriver, turn each battery door screw counterclockwise so that the slot is parallel with the screw picture molded into the case.
3. Lift off the battery door.
4. Remove the batteries.
5. Replace with four new AA alkaline batteries.
6. Reinstall the battery door and tighten screws.
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F1
ProcessMeter™
Basic Maintenance
F2
Figure 1. Replacing the Batteries and Fuses

Battery Life

 Warning
To prevent possible electrical shock, fire, or personal injury, replace the batteries when the low battery indicator shows.
The ProcessMeter is powered by four AA alkaline batteries.
Table 3 shows typical alkaline battery life. To preserve battery life:
•
Use current simulation instead of sourcing when possible.
• Avoid using the backlight.
• Do not disable the automatic power-off feature.
• Turn the ProcessMeter off when not in use.
Table 3. Typical Alkaline Battery Life
ProcessMeter Operation Hours
Measuring any parameter 140 Simulating Current 140 Sourcing 12 mA into 500 Ω 10
anw037.eps
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789/787B
Calibration Manual

Check and Replace Fuses

 Warning
To prevent possible electrical shock, fire, or personal injury, use only the specified replacement fuses.
Both current input jacks are fused with separate 440 mA fuses. To determine if a fuse is blown:
Turn the rotary function switch to
1.
2.
Plug the black test lead into COM, and the red test lead into the Ac input.
3.
Using an ohmmeter, check the resistance between the ProcessMeter test leads. If the resistance is about 1 Ω, the fuse is good. An open reading means that fuse F2 is blown.
4.
Move red test lead to .
5.
Using an ohmmeter, check the resistance between the ProcessMeter test leads. If the resistance is about 14 Ω, the fuse is good. An open means that fuse F1 is blown.
If a fuse is blown, replace it as follows. Refer to Figure 1 as necessary:
W.
1. Remove the test leads from the ProcessMeter and turn the ProcessMeter OFF.
2.
With a standard blade hand screwdriver, tu counterclockwise so that the slot is parallel with the screw picture molded into the case.
3. Remove either fuse by gently prying one end loose, then sliding the fuse out of its bracket.
4. Replace the blown fuse(s).
5.
Replace the battery compartment door. Secure the door by turning the screws one­quarter turn clockwise.

Performance Verification

To prevent electrical shock:
• Only qualified personnel should perform calibration ve tests that use high voltages.
• Always place the calibrator in the Standby (STBY) mode between tests and before handling the test connections or test cables.
Calibration verification tests confirm the complete functionality of the ProcessMeter and check the accuracy of each ProcessMeter function against its specifications. If the ProcessMeter fails any calibration verification test, it needs calibration adjustment or repair.
rn each battery compartment door screw
 Warning
rification
The ProcessMeter’s performance and accuracy are specified for one year after calibration at operating temperatures of +18 °C to +28 °C (64 °F to 82 °F), in relative humidity to 90 %. The specifications assume the ProcessMeter has been warmed up for 5 minutes before use.
To perform the calibration verification tests, it is not necessary to open the case; no adjustments are necessary. Merely make the required connections, source the
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designated values, and determine if the reading on the ProcessMeter or the multimeter falls within the acceptable range indicated.
These calibration verification test procedures assume that the person performing the tests has read the 789/787B Users Manual, knows how to select functions and ranges on the ProcessMeter, and knows how to operate the required equipment.
Calibration verification tests for the ProcessMeter can be performed manually, or they can be computer-automated (using Fluke’s MET/CAL Calibration Software). This document provides the procedures necessary to perform the calibration verification test manually.

Preparation

Throughout the calibration verification tests, “UUT” (unit under test) refers to the ProcessMeter; the word “multimeter” is reserved for the digital multimeter identified in the required equipment listed in Table 2.
Unless otherwise indicated, all connection diagrams for the calibration verification tests in this manual showing a calibrator or digital multimeter use a Fluke 5522A calibrator or 8508A.
Note
Note
ProcessMeter™
Performance Verification
If using a different calibrator or DMM make the connections appropriate for your instrument.
To prepare the UUT for the calibration verification tests:
1. Make sure that the required equipment is available (see Table 2).
2.
Make sure that the fuses in the UUT are intact. See “Checking and Replacing a Fuse” earlier in this manual.
3.
Make sure the UUT has fresh batteries. See “Replacing the Batteries” earlier in this manual.
4.
Warm up the calibrator and multimeter as required by their specifications.
5. Remove all input cables from the front of the UUT.
6.
Make sure that the UUT is in a stable ambient temperature between 18 °C and 28 °C (64.4 °F and 82.4 °F) and that it has been warmed up for 5 minutes.
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789/787B
Calibration Manual

Loop Power Test (789 only)

1. Enable the dc volts autorange function of the multimeter.
2.
Turn the rotary knob of the UUT to LOOP POWER.
3.
Measure the open circuit voltage of the UUT and verify it is >29.2 V and <32 V.
4. Press
J (BLUE) on the UUT to enable the 250 Ω HART resistor.
5. Repeat step 3.
6.
Disable the 250 Ω HART resistor by pressing J (BLUE).
7.
Connect the 1-kΩ shunt across SOURCE + and SOURCE - of the UUT.
8.
Measure the loaded down voltage and verify it is >23.8 V and <32 V, see Figure 2.
9.
Remove the 1-kΩ shunt.
10. Disconnect the UUT from the multimeter and turn the UUT off.
11.
Select the dc current function on the multimeter and set it to the 1-amp range (a 0.1 Ω shunt is used in the 1-amp range).
12.
Connect the current input terminals of the multimeter to the SOURCE + and SOURCE - terminals of the UUT.
13.
Turn the rotary knob of the UUT to LOOP POWER.
14.
Verify the short circuit current is >24 mA and <35 mA.
UUT
PROCESSMETER
789
14
RANGE HOLD
MIN MAX
100%
0%
REL
Hz
adm006F.EPS
Figure 2. Verifying Loop Power
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Page 19

Current Sourcing Test

1. Put the calibrator in Standby (STBY) mode.
ProcessMeter™
Performance Verification
2. Connect
the SOURCE + (A) and − (mA) terminals on the UUT to the current
terminals on the multimeter as shown in Figure 3.
3.
Put the multimeter in the dc mA mode and manually select the 100 mA range. (Do not allow the multimeter to autorange.)
4.
Turn the UUT rotary switch in the OUTPUT
X position.
5. Use the SpanCheck, %STEP and COARSE keys on the UUT to apply the values shown in Table 4 and compare the readings on the multimeter to the acceptable readings shown.
Table 4. Current Sourcing Test
789 Range 789 Output Current
No Range Switching 4.000 mA 3.990 mA 4.010 mA
No Range Switching 12.000 mA 11.990 mA 12.010 mA
No Range Switching 20.000 mA 19.990 mA 20.010 mA
Minimum Acceptable
Multimeter Reading
Maximum Acceptable
Multimeter Reading
Figure 3. Current Sourcing Connections Using the HP 3458A
adm001F.EPS
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789/787B
Calibration Manual

Current Measurement Test

1. Put the calibrator in Standby (STBY) mode.
Put the UUT rotary switch in the
2.
Wposition.
3. Connect the calibrator to the COM and mA terminals on the UUT as shown in Figure 4.
4. Apply the values from the calibrator shown in Table 5 and compare the readings on the UUT to the acceptable readings shown.
5.
Connect the calibrator to the COM and A terminals on the UUT.
6. Apply the values from the calibrator shown in Table 6 and compare the readings on the UUT to the acceptable readings shown.
7. Press
J (BLUE) on the UUT to toggle to ac amps.
8. Apply the values from the calibrator shown in Table 7 and compare the readings on the UUT to the acceptable readings shown.
UUT
PROCESSMETER
789
RANGE HOLD
MIN MAX
100%
0%
REL
Hz
5522A
5520A CALIBRATOR
NORMAL AUX
SCOPE
V, , ,
AUX V
RTD
A, -SENSE,
OUT
STBY
TRIG
OPR EARTH EXGRD SCOPE MENU
7 8 9
456
123
+
0•
/
HI
LO
20A
GUARD
20V PK MAX
20V PK MAX
TC
µ
m
npW
k
M
SHIFT
dBm sec
V Hz
PREV
¡F
¡CA
F
ENTER
Figure 4. Current Measurement Test Connections
NEW REF
MEAS
TC
MULTxDIV
EDIT
RESETCESETUP
FIELD
MORE MODES
÷
POWER
I O
adm003F.EPS
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Page 21
Table 5. DC mA Test
ProcessMeter™
Performance Verification
789 Range
No Range Switching 4.000 mA 3.996 mA 4.004 mA
No Range Switching 12.000 mA 11.992 mA 12.008 mA
No Range Switching 20.000 mA 19.988 mA 20.012 mA
789 Range
No Range Switching 0.100 A 0.098 A 0.102 A
No Range Switching 0.400 A 0.397 A 0.403 A
789 Range
No Range Switching 0.100 A @ 60 Hz 0.097 A 0.103 A
No Range Switching 0.400 A @ 60 Hz 0.394 A 0.406 A
Calibrator
DC Current
Table 6. DC Amp Test
Calibrator
DC Current
Table 7. AC Amp Test
Calibrator AC Current
and Frequency
Minimum Acceptable
Reading
Minimum Acceptable
Reading
Minimum Acceptable
Reading
Maximum Acceptable
Reading
Maximum Acceptable
Reading
Maximum Acceptable
Reading

Diode Function Test

1. Put the calibrator in Standby (STBY) mode.
2. Turn the UUT rotary switch in the Vposition.
3. Press J (BLUE) to select diode test ().
4.
Connect the calibrator to the COM and Figure 5.
5. Apply 2.0 V dc from the calibrator.
6. The UUT should read between 1.959 V and 2.041 V.
7.
Put the calibrator in Standby (STBY) mode; then disconnect the calibrator from the UUT.
8. Put the multimeter in the dc mA (autorange) function.
9.
Connect the current terminals of the multimeter to the COM and UUT.
The multimeter should read close to 0.3 mA. (There is no tolerance specification for this current. This test just makes sure that the diode test current source is operating.)
terminals on the UUT as shown in
terminals on the
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Page 22
789/787B
Calibration Manual
PROCESSMETER
789
RANGE HOLD
MIN MAX
100%
0%
REL
Hz
5522A
5520A CALIBRATOR
NORMAL AUX
SCOPE
V, , ,
AUX V
RTD
A, -SENSE,
20V PK MAX
OUT
STBY
TRIG
OPR EARTH EXGRD SCOPE MENU
7 8 9
456
123
+
0•
/
HI
LO
20A
GUARD
20V PK MAX
TC
µ
m
npW
k
M
SHIFT
dBm sec
V Hz
PREV
¡F
NEW
¡CA
REF
MEAS
F
TC
MULTxDIV
ENTER
EDIT
RESETCESETUP
FIELD
MORE MODES
÷
POWER
I O
PROCESSMETER
789
RANGE HOLD
MIN MAX
100%
0%
REL
Hz
adm007F.EPS
Figure 5. Diode Test Connections
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Page 23

Continuity Function Test

1. Put the calibrator in Standby (STBY) mode, and turn the UUT rotary switch to the
V position.
2. Connect the calibrator to the COM and terminals on the UUT as shown in Figure 6.
3. Press G (continuity beeper) on the UUT to select the continuity test.
4. Using the calibrator, apply a resistance output of 260 ±20 Ω. The beeper should stay off.
5. Using the calibrator, apply a resistance output of 100 ±10 Ω. The beeper should turn on.
PROCESSMETER
789
ProcessMeter™
Performance Verification
RANGE HOLD
MIN MAX
100%
0%
REL
Hz
5522A
5520A CALIBRATOR
NORMAL AUX
SCOPE
V, , ,
AUX V
RTD
A, -SENSE,
20V PK MAX
OUT
STBY
HI
LO
TRIG
20A
GUARD
20V PK MAX
TC
OPR EARTH EXGRD SCOPE MENU
7 8 9
456
123
+
0•
/
µ
m
npW
k
M
SHIFT
dBm sec
V Hz
ENTER
PREV
¡F
NEW
¡CA
REF
MEAS
F
TC
MULTxDIV
EDIT
RESETCESETUP
FIELD
MORE
MODES
÷
POWER
I
O
adm008F.EPS
Figure 6. Continuity Test Connections
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Page 24
789/787B
Calibration Manual

Resistance Measurement Test

1. Put the calibrator in Standby (STBY) mode.
2.
Put the UUT rotary switch in the
V position.
3. Connect
the OUTPUT and SENSE leads of the calibrator to the UUT as shown by
the solid and dotted lines in Figure 7.
4.
Apply the calibrator resistance values in Table 8 in the UUT 400 Ω to 40 kΩ range. Compare the readings on the UUT to the acceptable readings shown.
5.
Change the connections to the UUT. Using the Fluke 5440A-7002 low thermal leads, connect the calibrator to the UUT as shown by the solid lines in Figure 7.
6.
Apply the rest of the calibrator resistance values in Table 8 (400 kΩ range and above). Compare the readings on the UUT to the acceptable readings shown.
UUT
5522A
5520A CALIBRATOR
NORMAL AUX
SCOPE
V, , ,
AUX V
RTD
A, -SENSE,
20V PK MAX
OUT
STBY
TRIG
OPR EARTH EXGRD SCOPE MENU
7 8 9
456
123
+
0•
/
HI
LO
20A
GUARD
20V PK MAX
TC
µ
m
npW
k
M
SHIFT
dBm sec
V Hz
ENTER
PREV
¡F
NEW
¡CA
REF
MEAS
F
TC
MULTxDIV
Figure 7. Resistance Measurement Test Connections
EDIT
RESETCESETUP
FIELD
MORE MODES
÷
POWER
I
O
adm004F.EPS
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Page 25
Table 8. Resistance Measurement Test
ProcessMeter™
Performance Verification
Range
400 Ω 120 Ω 2-Wire 119.6 Ω 120.4 Ω
400 Ω 300 Ω 2-Wire 299.2 Ω 300.8 Ω
4 kΩ 1.2 kΩ 2-Wire 1.197 kΩ 1.203 kΩ
4 kΩ 3 kΩ 2-Wire 2.993 kΩ 3.007 kΩ
40 kΩ 12 kΩ 2-Wire 11.97 kΩ 12.03 kΩ
40 kΩ 30 kΩ 2-Wire 29.93 kΩ 30.07 kΩ
400 kΩ 120 kΩ OFF 119.7 kΩ 120.3 kΩ
400 kΩ 200 kΩ OFF 199.5 kΩ 200.5 kΩ
400 kΩ 300 kΩ OFF 299.3 kΩ 300.7 kΩ
4 MΩ 1.2 MΩ OFF 1.193 MΩ 1.207 MΩ
4 MΩ 3.0 MΩ OFF 2.986 MΩ 3.014 MΩ
40 MΩ 12 MΩ OFF 11.67 MΩ 12.33 MΩ
40 MΩ 30 MΩ OFF 29.22 MΩ 30.78 MΩ
Calibrator
Resistance
Calibrator
Compensation Mode
Minimum
Reading
Maximum
Reading
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Page 26
789/787B
Calibration Manual

DC Millivolts Measurement Test

1. Put the calibrator in Standby (STBY) mode.
2.
Put the UUT rotary switch in the
3.
Connect the calibrator to the COM and
U position.
terminals on the UUT as shown in
Figure 8.
4. Apply the values from the calibrator shown in Table 9 and compare the readings on the UUT to the acceptable readings shown.
UUT
5522A
5520A CALIBRATOR
NORMAL AUX
SCOPE
V, , ,
AUX V
RTD
A, -SENSE,
OUT
STBY
OPR EARTH EXGRD SCOPE MENU
7 8 9
456
123
+
0•
/
20V PK MAX
HI
LO
TRIG
20A
GUARD
20V PK MAX
TC
Figure 8. DC mV Measurement Test Connections
Table 9. DC mV Test
Range Calibrator DC Voltage Minimum Reading Maximum Reading
No Range Switching 100 mV 99.7 mV 100.3 mV
No Range Switching 300 mV 299.5 mV 300.5 mV
µ
m
npW
k
M
SHIFT
dBm sec
V Hz
ENTER
PREV
¡F
NEW
¡CA
REF
MEAS
F
TC
MULTxDIV
EDIT
RESETCESETUP
FIELD
MORE
MODES
÷
POWER
I
O
adm005F.EPS
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Page 27

DC Volts Measurement Tests

To prevent possible electrical shock, fire, or personal injury:
ProcessMeter™
Performance Verification
 Warning
• Some of the calibration verification tests involv
e the use of high
voltages and should be performed by qualified personnel only.
• Always place the calibrator in the Standby (STBY) mode betw
een
tests and before handling the test connections or test cables.
1.
Put the calibrator in Standby (STBY) mode.
2.
Put the UUT rotary switch in the T position; select the autoranging mode.
3.
Connect the calibrator to the COM and
terminals on the UUT as shown in
Figure 9.
4. Apply the values from the calibrator shown in Table 10 and compare the readings on the UUT to the acceptable readings shown.
UUT
5522A
5520A CALIBRATOR
NORMAL AUX
SCOPE
V, , ,
AUX V
RTD
A, -SENSE,
20V PK MAX
OUT
STBY
HI
LO
TRIG
20A
GUARD
20V PK MAX
TC
OPR EARTH EXGRD SCOPE MENU
789
456
123
+
0•
/
m
npW
k
M
SHIFT
PREV
dBm sec
VHz
¡F
ENTER
NEW
¡CA
REF
MEAS
F
TC
MULTxDIV
Figure 9. AC/DC Voltage Measurement Test Connections
EDIT
RESETCESETUP
FIELD
MORE
MODES
POWER
I
O
adm009F.EPS
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Page 28
789/787B
Calibration Manual

AC Volts Measurement Test

Table 10. DC Volts Test
Range Calibrator DC Voltage Minimum Reading Maximum Reading
4 V dc 1 V 0.998 V 1.002 V
4 V dc 3 V 2.996 V 3.004 V
40 V dc 10 V 9.98 V 10.02 V
40 V dc 30 V 29.96 V 30.04 V
400 V dc 100 V 99.8 V 100.2 V
400 V dc 300 V 299.6 V 300.4 V
1000 V dc 100 V 99 101
1000 V dc 800 V 798 802
 Warning
To prevent possible electrical shock, fire, or personal injury:
• Some of the calibration verification tests involv
e the use of high
voltages and should be performed by qualified personnel only.
• Always place the calibrator in the Standby (STBY) mode betw
een
tests and before handling the test connections or test cables.
1.
Put the calibrator in Standby (STBY) mode.
2.
Put the UUT rotary switch in the S position.
3.
Connect the calibrator to the COM and
terminals on the UUT as shown in
Figure 9.
4. Apply the values from the calibrator shown in Table 11 and compare the readings on the UUT to the acceptable readings shown.
Table 11. AC Volts Test
Range Calibrator Voltage and Frequency
400 mV ac 100 mV @ 60 Hz 98.9 mV 101.1 mV
400 mV ac 300 mV @ 60 Hz 297.5 mV 302.5 mV
4 V ac 1 V @ 60 Hz 0.991 V 1.009 V
4 V ac 2 V @ 60 Hz 1.984 V 2.016 V
4 V ac 3 V @ 60 Hz 2.977 V 3.023 V
40 V ac 10 V @ 60 Hz 9.91 V 10.09 V
40 V ac 30 V @ 60 Hz 29.77 V 30.23 V
400 V ac 100 V @ 60 Hz 99.1 V 100.9 V
400 V ac 300 V @ 60 Hz 297.7 V 302.3 V
1000 V ac 100 V @ 60 Hz 97 103
1000 V ac 800 V @ 60 Hz 792 808
Minimum Acceptable
Reading
Maximum Acceptable
Reading
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Page 29

Frequency Measurement Test

1. Put the calibrator in Standby (STBY) mode.
2.
Put the UUT rotary switch in the (ac volts) position.
ProcessMeter™
Performance Verification
3. Press
4.
h to toggle to the frequency measurement function.
Connect the calibrator to the COM and
terminals on the UUT as shown in
Figure 10.
5. Apply the values from the calibrator shown in Table 12 and compare the readings on the UUT to the acceptable readings shown. Press R to select the voltage range.
Table 12. Frequency Measurement Test
UUT
Range Voltage
199.99 Hz 400 mV 150 mV @ 100 Hz 99.98 Hz 100.02 Hz
1999.9 Hz 4 V 1 V @ 1000 Hz 999.8 Hz 1000.2 Hz
19.999 kHz 40 V 4 V @ 10 kHz 9.998 kHz 10.002 kHz
UUT
Calibrator Voltage
and Frequency
Minimum Acceptable
Reading
Maximum
Acceptable Reading
5522A
5520A CALIBRATOR
NORMAL AUX
SCOPE
V, , ,
AUX V
RTD
A, -SENSE,
20V PK MAX
OUT
STBY
HI
LO
TRIG
20A
GUARD
20V PK MAX
TC
OPR EARTH EXGRD SCOPE MENU
7 8 9
456
123
+
0•
/
µ
m
npW
k
M
SHIFT
dBm sec
V Hz
ENTER
PREV
¡F
NEW
¡CA
REF
MEAS
F
TC
MULTxDIV
EDIT
RESETCESETUP
FIELD
MORE
MODES
÷
POWER
I
O
adm010F.EPS
Figure 10. Frequency Measurement Test Connections
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Page 30
789/787B
Calibration Manual

Calibration Adjustment

Preparation

The following sections comprise the Calibration Adjustment Procedure. The procedure is meant to bring the UUT back into specification following repair of the UUT or when the UUT fails the Performance Test. The required equipment is listed earlier in Table 2.
Calibrate the ProcessMeter once a year to ensure that it performs according to its specifications.
 Warning
To prevent possible electric shock, fire, or personal injury:
•
Do not use the ProcessMeter if it looks damaged.
• Inspect the ProcessMeter for damage, especially around the input terminals. Inspect the test leads and test connections for damaged insulation or exposed metal.
• Look for cracks, missing plastic or damaged insulation. If damage is detected, do not continue; contact Fluke to have the ProcessMeter serviced.
• Make sure that the battery compartment door on the ProcessMeter is closed and latched before using it.
• Check the test leads for continuity. Replace damaged test leads as necessary.
• Do not use the ProcessMeter if it appears to operate abnormally Protection designed into the ProcessMeter might be impaired. If in doubt, have the ProcessMeter serviced.
• To avoid electrical shock, always Standby (STBY) mode between tests and before handling the test connections or test cables.
• Some of the calibration adjustment procedures involve the use of high voltages and should be performed by qualified personnel only.
place the calibrator in the
.
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Page 31
Note
The calibration adjustment procedures assume that the person performing them knows how to use the ProcessMeter and the required equipment. Do not attempt to calibrate the ProcessMeter unless you are qualified to do so.
Calibration adjustment should be performed in an RF field <1 V/m such as a laboratory environment.
To prepare for calibration adjustment, do the following:
1. Make sure that you have the required equipment available (see Table 2).
2.
Make sure that both fuses in the UUT are intact. See Check and Replace Fuses earlier in this manual.
3.
Turn on and warm up the calibrator as required by its specifications.
4. Remove all input cables from the front of the UUT.
5.
Make sure that the UUT is in an ambient temperature between 18 °C and 28 °C (64.4 °F and 82.4 °F).

Procedure for Models with Firmware Version <2.0

ProcessMeter™
Calibration Adjustment

AC Voltage Adjustment

Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator.
1. Turn the UUT switch to S.
2.
The calibration button is located on the backside of the ProcessMeter, under the Calibration Seal. Use a small probe to break the seal.
3. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).
Pressing the Calibration Button puts the ProcessMeter into and out of calibration mode. The ProcessMeter will remain in calibration mode until the unit is turned off or the calibration button is pressed a second time.
CAL appears in the bottom display when the ProcessMeter is in calibration mode.
4. Apply the voltages listed below as prompted by the ProcessMeter.
5. Press
6. When
after each sourced value appears. Do not alter the sourced value while
the display reads Busy.
Applied voltages:
• 4 mV @ 60 Hz
• 40 mV @ 60 Hz
• 400 mV @ 60 Hz
• 4 V @ 60 Hz
• 40 V @ 60 Hz
• 400 V @ 60 Hz
• 1000 V @ 60 Hz
Store is displayed, press
Note
to store the calibration value.
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Page 32
789/787B
Calibration Manual
Calibration Button

Frequency Adjustment

1. Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator.
2.
Turn the UUT’s switch to S.
3. Push
4. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep
Press the Calibration Button to put the ProcessMeter into and out of calibration mode. The ProcessMeter remains in calibration mode until the unit is turned off or the calibration button is pressed a second time.
CAL appears in the bottom display when the ProcessMeter is in calibration mode.
5. Apply 4 V @ 5000 Hz.
6. Press
7. When
h.
(see Figure 11).
after the sourced value appears. Do not alter the sourced value while the
display reads Busy.
Store displays, press to store the calibration value.
Figure 11. Calibration Button Access
aau04f.eps
Note
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Page 33

DC Voltage Adjustment

1. Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator.
2.
Turn the UUT’s switch to T.
3. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).
Pressing the Calibration Button puts the ProcessMeter into and out of calibration mode. The ProcessMeter will remain in calibration mode until the unit is turned off or the calibration button is pressed a second time.
CAL appears in the bottom display when the ProcessMeter is in calibration mode.
4. Press after each sourced value appears. Do not alter the sourced value while
the display reads Busy.
Applied voltages:
• 0 V
• 4 V
ProcessMeter™
Calibration Adjustment
Note
• 40 V
• 400 V
• 1000 V
5. When
Store is displayed, press  to store the calibration value.

DC Millivolts Adjustment

1. Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator.
2.
Turn the UUT’s switch to U.
3. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).
Pressing the Calibration Button puts the ProcessMeter into and out of calibration mode. The ProcessMeter will remain in calibration mode until the unit is turned off or the calibration button is pressed a second time.
CAL appears in the bottom display when the ProcessMeter is in calibration mode.
4. Apply 0 V. Press after the sourced value appears. Do not alter the sourced value while the display reads Busy.
5.
Apply 400 mV. Press after the sourced value appears. Do not alter the sourced value while the display reads Busy.
Note
6. When
Store is displayed, press to store the calibration value.
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Page 34
789/787B
Calibration Manual

Ohms Adjustment

1. Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator.
2.
Turn the UUT’s switch to
3. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).
Pressing the Calibration Button puts the ProcessMeter into and out of calibration mode. The ProcessMeter will remain in calibration mode until the unit is turned off or the calibration button is pressed a second time.
CAL appears in the bottom display when the ProcessMeter is in calibration mode.
4. Apply the resistances listed below. Press after each sourced value appears. Do not alter the sourced value while the display reads Busy.
Applied resistances:
• 0 Ω
400 Ω
•
•
4 kΩ
40 kΩ
•
400 kΩ
•
•
4 MΩ
40 MΩ
•
5. When Store is displayed, press  to store the calibration value.
V.
Note

Diode Adjustment

1. Connect the ProcessMeter to the volt/ohm output of the 5522A calibrator.
2.
Turn the UUT’s switch to
3. Press
4. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).
Pressing the Calibration Button puts the ProcessMeter into and out of calibration mode. The ProcessMeter will remain in calibration mode until the unit is turned off or the calibration button is pressed a second time.
CAL appears in the bottom display when the ProcessMeter is in calibration mode.
Before applying 0 V dc, the 5522A must be range locked in the 3.3 V range. Impedance of 330 mV range changes the 0 V point.
5. Apply 0 V dc. Press after the sourced value appears. Do not alter the sourced value while the display reads Busy.
6.
Apply 1 V dc. Press after the sourced value appears. Do not alter the sourced value while the display reads Busy.
7. When
V.
J (BLUE) to enter the diode function.
Note
Store is displayed, press to store the calibration value.
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Page 35

Milliamps DC Adjustment

1. Connect the ProcessMeter to the mA output of the 5522A calibrator.
2.
Turn the UUT’s switch to inputs.
3. Press and hold the Calibration Button for approximately 2 seconds. The unit will beep (see Figure 11).
Pressing the Calibration Button puts the ProcessMeter into and out of calibration mode. The ProcessMeter will remain in calibration mode until the unit is turned off or the calibration button is pressed a second time.
CAL appears in the bottom display when the ProcessMeter is in calibration mode.
4. Apply 0 mA dc. Press after the sourced value appears. Do not alter the sourced value while the display reads Busy.
5.
Apply 30 mA dc. Press after the sourced value appears. Do not alter the sourced value while the display reads Busy.
ProcessMeter™
Calibration Adjustment
W. Make sure the test leads are in the mA and COM
Note
6. When
Store is displayed, press  to store the calibration value.

Amps DC Adjustment

1. Connect the ProcessMeter to the A output of the 5522A calibrator.
2.
Turn the UUT’s switch to
3. Press and hold the Calibration Button for 2 seconds (see Figure 11). The unit will beep.
4.
Apply 0 A dc. Press after the reading stabilizes.
5.
Apply 1 A dc. Press after the reading stabilizes.
Remove 1 A from UUT promptly after storing calibration constant. Fuse will blow after 30 seconds.
6. Press  to store calibration constants.
W. Make sure the test leads are in the A and COM jacks.
Caution
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Page 36
789/787B
Calibration Manual

Amps AC Adjustment

1. Connect the ProcessMeter to the A output of the 5522A calibrator.
2.
Turn the UUT’s switch to
W.
3. Press
4. Press and hold the Calibration Button for 2 seconds (see Figure 11). The unit will
5.
6.
7. Press
Remove 1 A from UUT promptly after storing calibration constant. Fuse will blow after 30 seconds.
J (BLUE) to enter the A ac function.
beep.
Apply 0.05 A ac @ 60 Hz. Press after the reading stabilizes.
Apply 1 A ac. Press after the reading stabilizes.
to store calibration constants.

Milliamps Output Adjustment

1. Connect the ProcessMeter A output to the Digital Multimeter input.
2.
UUT will output approximately 4 mA. Use the fine and coarse adjustments on the UUT to get a 4.000 mA reading on the Digital Multimeter.
3. Press
4.
5. Press
after 4.000 mA reading is reached on the Digital Multimeter.
UUT will output approximately 20 mA. Use the fine and coarse adjustments on the UUT to get a 20.000 on the Digital Multimeter.
after 20.000 mA reading is reached on the Digital Multimeter.
Caution
6. Press
to store calibration constants.
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Page 37

Procedure for Models with Firmware Version ≥2.0

Calibration Adjustment Counter

The Meter contains a calibration adjustment counter. The counter is incremented each time a Calibration Adjustment Procedure is completed. The value in the counter can be recorded and used to show that no adjustments have been made during a calibration cycle.
Use the following steps to view the calibration counter on the UUT.
ProcessMeter™
Calibration Adjustment
1. While holding down on the UUT, turn the rotary switch from OFF to UUT should display . Release .
2. Press
3.
once to see the calibration counter. For example, .
Turn the rotary switch to OFF.

Calibration Adjustment Password

To start the Calibration Adjustment Procedure, the correct four-digit password must be entered. The password can be changed or reset to the default as described in following paragraphs. The default password is .

How to Change the Password

1. While holding down on the UUT, turn the rotary switch from OFF to V. The
UUT displays . Release .
2. Press
3. Press
once to see the calibration counter.
again to start the password entry. The UUT displays ????.
The following keys represent the digit indicated below when entering or changing the password:
= 1 M = 2 R = 3 H = 4 = 5 G = 6 r = 7 h = 8
V. The
K = 9 J = 0
4. Press the four keys to enter the old password. If changing the password for the first
time, enter
5. Press r to change the password:
• The UUT displays //// if the old password is correct.
• If the password is not correct, the UUT emits a double beep, displays ???? and
the password must be entered again. Repeat step 4.
6. Press the four keys representing the new password.
7. Press
(1), M (2), R (3), and H (4).
to store the new password.
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Page 38
789/787B
Calibration Manual
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.
2. Learn the guidelines for proper handling.
3. Use the proper procedures, packaging, and bench techniques.
Follow these practices to minimize damage to static sensitive parts.
 Warning
To prevent electric shock or personal injury. De-energize the product and all active circuits before opening a product enclosure, touching or handling any PCBs or components.
• Minimize handling.
• Handle static-sensitive
parts by non-conductive edges.
• Do not slide static­sensitive components over any surface.
• When removing plug-in assemblies, handle only by non-conductive edges.
• Never touch open-edge connectors except at a static-free work station.
• Keep parts in the original containers until ready for use.
• Use static shielding containers for handling and transport.
• Avoid plastic, vinyl, and Styrofoam area.
®
in the work
• Handle static-sensitive parts only at a static­free work station.
• Put shorting strips on the edge of the connector to help protect installed static­sensitive parts.
• Use anti-static type
solder extraction tools only.
• Use grounded-tip
soldering irons only.
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Page 39

How to Restore the Default Password

U16
C99
R117
C84
C89
C100
TP36
R106
R94
U17
C104
TP49
TP23
Q21
Q22
RT2
C80
C83
C91
C93
C96
C101
C72
R108
TP43
TP47
CR9
R113
TP48
TP29
CR6
CR7
R109
C97
L3
Q26
R110
C98
TP14
TP17
F3
TP30
R112
R111
R115
C79
R105
R116
R70
TP16
R83
C70
R97
U15
S12
TP12
R84
C60
TP37
LS1
C
L2
C73
TP40
Q32
FRONT
TP27
TP28
R96
C78
R99
Q20
C46
TP19
C71
C81
CR8
TP13
C58
R87 R90
U14
L4
R91
TP20
RN7
TP31
C76
U19
TP44
C50
C54 C53
U10
C61
C56
C67
C77
R103
C85
C108
TP46
Q30
1
U12
C66
C86
C109
C110
TP45
R125
Q19
TP22
C59
C65
TP32
TP35
C87
R123
R128
C63
R85
R118
Q27
Q29
C48
TP24
RN8
TP50
TP33
C102
R124
1
C82
C90
TP42
DS3
FRONT
R104 R107
C95
R120
R121
R126 R122
R129
R131
C47
R76
TP18
C62
C69
TP34
TP38
TP39
TP41
1
C103
C105
C44
C45
C51
R81
TP26 C64
Q25
U18
R73 R72
U11
Q23
C74
R100
C94
R114
R127
R74
R78 R77
R79
R82 R80
C57
U13
C68
C75
R101
C92
Q31
C55
RN6
RN9
R93
R95
R102
C88
R119
C107
Q28
C111
1
R130
TP15
TP25
Q24
R98
Y1
C106
R71
C49
R75
C52
TP21
R86
R88
R89
R92
U16
C99
R117
C84
C89
C100
TP36
R106
R94
U17
C104
TP49
TP23
Q21
Q22
RT2
C80
C83
C91
C93
C96
C101
C72
R108
TP43
TP47
CR9
R113
TP48
TP29
CR6
CR7
R109
C97
L3
Q26
R110
C98
TP14
TP17
F3
TP30
R112
R111
R115
C79
R105
R116
R70
TP16
R83
C70
R97
U15
S12
TP12
R84
C60
TP37
LS1
C
L2
C73
TP40
Q32
FRONT
TP27
TP28
R96
C78
R99
Q20
C46
TP19
C71
C81
CR8
TP13
C58
R87 R90
U14
L4
R91
TP20
RN7
TP31
C76
U19
TP44
C50
C54 C53
U10
C61
C56
C67
C77
R103
C85
C108
TP46
Q30
1
U12
C66
C86
C109
C110
TP45
R125
Q19
TP22
C59
C65
TP32
TP35
C87
R123
R128
C63
R85
R118
Q27
Q29
C48
TP24
RN8
TP50
TP33
C102
R124
1
C82
C90
TP42
DS3
FRONT
R104 R107
C95
R120
R121
R126 R122
R129
R131
C47
R76
TP18
C62
C69
TP34
TP38
TP39
TP41
1
C103
C105
C44
C45
C51
R81
TP26 C64
Q25
U18
R73
R72
U11
Q23
C74
R100
C94
R114
R127
R74
R78 R77
R79
R82 R80
C57
U13
C68
C75
R101
C92
Q31
C55
RN6
RN9
R93
R95
R102
C88
R119
C107
Q28
C111
1
R130
TP15
TP25
Q24
R98
Y1
C106
R71
C49
R75
C52
TP21
R86
R88
R89
R92
To avoid electrical shock or personal injury, remove the test leads and any input signal before removing the back case from the UUT.
If the calibration password is forgotten, the default password () can be restored with these steps:
1. Turn the rotary switch from OFF to B.
2. Remove the back case from the UUT.
3. Remove the shield and leave the PCA in the top case.
4.
Apply 6.0 V across the battery pads (XBT1) + and – on the back of the PCA. See Figure 10.
Short across the  keypad on the back of the PCA. See Figure 10. The UUT should
4. beep (if the beeper is enabled). The default password is now restored.
5. Remove the 6.0 V supply and install the shield and back case on the UUT.
ProcessMeter™
Calibration Adjustment
Warning
Firmware Version = ≥2.0
Cal Password
Reset
Figure 12. Restoring the Default Password
35
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Battery Pads
ebp10f-1.eps
Page 40
789/787B
Calibration Manual

Meter Keys Used in the Calibration Steps

Calibration Adjustment

The Meter keys behave as follows when performing the Calibration Adjustment Procedure. This may be of help determining why a calibration step is not accepted and for determining the input value without referring to Table 6.
H Press and hold to show the measured value. The measurement value is not
calibrated so it may not match the input value. This is normal.
M Press and hold to display the required input amplitude. h Press and hold to display the frequency of the required input.
J Store the calibration value and advance to the next step. This key is also used
to exit the calibration mode after the calibration-adjustment sequence is complete.
RANGE HOLD
REL
Use the following steps to make calibration adjustments to the UUT. Complete the adjustment procedure before turning the UUT off; otherwise, the new calibration constants will not be saved.
Press to adjust the Source mA to the target.
Hz
1. While holding down
H, turn the rotary switch from OFF to V. The UUT
displays . Release .
2. Press
3. Press
H once to see the calibration counter, for example, 0001. H again to start the password entry. The UUT displays ????.
4. Press four keys to enter the password.
5. Press
H to go to the first calibration step. The UUT displays 0001 if the password
is correct. If the password is not correct, the UUT emits a double beep, displays ???? and the password must be ent
6.
Apply the input value listed for each calibration adjustment step in Table 13. For each
ered again. Repeat step 4.
step, position the rotary switch and apply the input to the terminals as indicated in the table.
7.
After each input value is applied, press J to accept the value and proceed to the next step (0002 and so forth).
Note
Press J and wait until the step number advances before changing the calibrator source or turning the rotary switch. If the rotary switch is not in the correct position, or if the measured value is not within the anticipated range of the input value, the UUT emits a double beep and will not continue to the next step. Some adjustment steps take longer to execute than others (10 to 15 seconds). For these steps, the UUT will beep when the step is complete. Not all steps have this feature.
8. After the final step, the display shows  to indicate that the calibration adjustment is complete. Press G to go to meter mode.
36
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Page 41
Calibration Adjustment
Note Set the calibrator to Standby prior to changing the function switch position and/or after completing adjustment of each function. If the calibration adjustment procedure is not completed correctly, the UUT will not operate correctly.
Caution
Remove 1 A from UUT promptly after storing calibration constant. Fuse will blow after 30 seconds.
Table 13. Calibration Adjustment Steps for Models with Firmware Version >2.0
Input Terminal Step Input Value Function
1 400 mV ac, 60 Hz V ac
2 4 V ac, 60 Hz V ac
3 40 V ac, 60 Hz V ac
4 400 V ac, 60 Hz V ac
5 4 V dc V dc
ProcessMeter™
V/COM
mA/COM
A/COM
6 40 V dc V dc
7 400 V dc V dc
8 400 mV dc mV dc
9 40 mV dc mV dc
10 400 Ω Ω
11 4 kΩ Ω
12 40 kΩ Ω
13 400 kΩ Ω
14 4 MΩ Ω
15 0 MΩ Ω
16 40 MΩ Ω
17 4 V dc Diode
18 0 mA dc mA
19 30 mA dc mA
20 1 A dc A
21 1 A ac, 60 Hz A
22 1 A ac, 2 kHz A
23 No input, 0 % (4 mA) output, measure
output current with HP3458
A/mA
24 No input, 100 % (20 mA) output,
measure output current with HP3458
mA source
mA source
37
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Page 42
789/787B
Calibration Manual

Replacement Parts and Accessories

 Warning
To prevent possible electrical shock, fire, or personal injury use only:
• Use only
specified replacement fuses.
• Use only specified replacement parts.
Replacement parts and some accessories are shown in Figure 13 and listed in Table 14. Many more DMM accessories are available from Fluke. For a catalog, contact the nearest Fluke distributor.
To find out how to order parts or accessories use the telephone numbers or addresses shown in "Contacting Fluke."
1
2
3
4
5
6
2x
7
9
13
2x
W
10
11
12
2x
14
4x
15
16
18
19
20
2x
21
22
23
4x
24
25
26
27
2x
28
29
38
8
17
3x
anw038.eps
Figure 13. Replacement Parts
www.GlobalTestSupply.com
Page 43
Table 14. Replacement Parts
ProcessMeter™
Replacement Parts and Accessories
Item
Number
Description
Knob Assembly with o-ring
Decal, Top Case 1623923
Keypad
Top Shield 1622924
Top Shield Contact
LCD Display
LCD Connectors, Elastomeric
Backlight/Bracket 1622960
Top Case with Lens Protector 1622855
Contact Housing
RSOB Contact
Mask 1622881
Fuse, 440 mA, 1000 V fast-blow
PCB Screw
Fluke PN
for 789 <V2
Fluke PN
for 789 ≥V2
658440
1622951 1
674853 1
1883431 1
1641965 2
1622913 1
1567683 4
943121 2
832220 2
Fluke PN
for 787B
4772670 1
4772201 1
4772681 1
4756199 1
4772197 2
4772655 1
Quantity
Battery Contact, Negative
Battery Contact, Positive
Battery Contacts Dual
Bottom Insulator NA
Bottom Shield 1675171
Shock Absorber
IR Lens
Bottom Case 659042
Case Screws
Battery, 1.5 V, 0-15 mA, AA Alkaline
Accessory Mount with Probe Holders
Shock Absorber
Access Door, Battery/Fuse
Fasteners, Battery/Fuse Access Door
Tilt-Stand
- Test Leads
- Alligator Clips
658382 1
666438 1
666435 3
4811256 1
4811263 1
878983 1
658697 1
4772662 1
1558745 4
376756 4
658424 1
674850 1
1622870 1
948609 2
659026 1
[1]
variable
variable
1 (set of 2)
[1]
1 (set of 2)
[1]
39
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