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Fluke
Multimeter
8846A
Calibration Manual
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8845A/8846A
Calibration Manual
4-6
Table 4-1. Replaceable Parts (cont)
Ref.
Desig.
Description Part
Number
Qty
LC1
LC1 LINE CORD,NORTH AM,10A
,5-15/IEC,18/3,SVT,6.0 FT
284174
1
TEST LEAD SET,600V/1KV,PRO
BE-R/A PLUG,BLACK/RED
802980
1
79
81
Table of Contents
Main Page
Default Chapter
1
Digital Multimeter
1
Table of Contents
3
Introduction and Specifications
11
Introduction
13
Safety Information
13
Symbols
14
General Safety Summary
14
Description of IEC 61010 Measurement Categories
16
Organization of the Calibration Manual
17
Chapter 1 - Introduction and Specifications
17
Chapter 2 - General Maintenance
17
Chapter 3 - Performance Test and Calibration
17
Chapter 4 - List of Replaceable Parts
17
Operating Instructions
17
Accessories
17
General Specifications
19
Power
19
Dimensions
19
Display
19
Environment
19
Safety
19
Emc
19
Triggering
19
Memory
20
Math Functions
20
Electrical
20
Remote Interfaces
20
Warranty
20
Electrical Specifications
20
DC Voltage Specifications
20
Input Characteristics
20
8846A Accuracy
21
AC Voltage Specifications
21
Additional Errors
21
8846A Accuracy
22
Input Characteristics
22
8845A Accuracy
23
Additional Low Frequency Errors
23
8846A Accuracy
24
Input Characteristics
24
Resistance
24
Accuracy (8846A)
25
Additional Ohms Errors
25
DC Current
25
Input Characteristics
25
AC Current
26
Accuracy (8845A)
26
Additional Current Errors
26
Input Characteristics
26
8846A Accuracy
27
8845A Accuracy
28
Additional Low Frequency Errors
28
Frequency
28
8846A Accuracy
29
Gate Time Vs. Resolution
29
Additional Low Frequency Errors
30
Capacitance (8846A Only)
30
Continuity
30
Temperature (8846A Only)
30
Diode Test
31
Measurement Rates
31
Measurement Uncertainty
31
Interpreting Accuracy Specifications
32
24-Hour Accuracy
32
90-Day and 1-Year Accuracy
32
Temperature Coefficients
32
Configuring for Highest Accuracy Measurements
32
AC Voltage and AC Current Measurements
32
DC Voltage, DC Current, and Resistance Measurements
32
Frequency and Period Measurements
32
General Maintenance
33
Introduction
35
Warranty Repairs and Shipping Information
35
General Maintenance Information
35
Required Equipment
35
Power Requirements
35
Static Safe Handling
35
Cleaning
36
Fuse Replacement
36
Line-Power Fuse
36
Current-Input Fuses
37
If the Meter Does Not Turn on
39
Display Tests
39
Disassembly Procedures
39
General Disassembly
39
Main Chassis Disassembly
40
Front Panel Disassembly
40
Assembly Procedures
40
Performance Test and Calibration
41
Introduction
43
Required Equipment
43
Test Considerations
45
Performance Tests
45
Volts DC Verification
45
Volts AC and Frequency Verification
48
4-Wire Ohms Verification
52
2-Wire Ohms Verification
54
2X4 Test Lead Verification Steps
56
Rear Panel Terminal Verification Steps
56
Capacitance Verification Steps (8846A Only)
59
DC Current Verification Steps
60
AC Current Verification Steps
63
Adjustment (Calibration)
65
Unlocking the Meter for Front-Panel Adjustments (Calibration)
66
Unlocking the Meter for Adjustments over a Remote Interface
66
Changing the Calibration Password
66
Resetting the Calibration Password
66
Equipment for Calibration
67
Adjustment Process
67
Aborting a Calibration Process
73
Sample Adjustment Program
73
List of Replaceable Parts
75
Introduction
77
How to Obtain Parts
77
How to Contact Fluke
77
Parts
78
Appendices
85
A Verification Forms
85
B Example Adjustment Program
85
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