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U1242A
Agilent Technologies U1242A User Manual
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Agilent T
echnologies
Agilent U1241A and
U1242A
Handheld Digital
Multimeters
User’
s and Service Guide
2
Table of Contents
Default Chapter
2
Restricted Rights Legend
2
Safety Symbols
3
General Safety Information
4
In this Guide
9
Table of Contents
11
Introduction
16
1 Getting Started
17
Checking the Shipping Contents
17
The Front Panel at a Glance
18
Adjusting Tilt Stand
18
The Annunciator at a Glance
19
Analog Bar Graph
20
The Keypad and Rotary Switch at a Glance
20
Getting Started
21
The Input Terminal at a Glance
22
2 Features and Functions
23
Measuring Voltage
24
Measuring Current (> 440 Ma)
24
Measuring Current (< 440 Ma)
25
Measuring % Scale of 4 - 20 Ma
25
Measuring Frequency
26
Measuring Resistance and Testing Continuity
26
Testing Diodes
27
Measuring Capacitance
28
Measuring Temperature
28
Measuring Harmonic Ratio (U1242A)
30
Using Switch Counter
30
MINMAX Recording
32
Data Hold (Trigger Hold)
32
Refresh Hold
33
NULL (Relative)
33
Data Logging (U1242A)
34
Manual Logging
35
Interval Logging
35
Reviewing Logged Data
36
Removing Logged Data
36
Scanning Temperature Measurement (U1242A)
37
Checking Battery Capacity
37
Alerts and Warning During Measurement
38
Overload Alert
38
Input-A Warning Alert
38
Input-Ma Warning Alert
38
3 Default Setting Configurations
39
Setting Configurations
40
4 Service and Maintenance
43
General Maintenance
44
Battery Replacement
44
Fuse Replacement
45
Troubleshooting
47
Returning Instrument for Service
48
5 Performance Tests and Calibration
50
Calibration Overview
50
Closed-Case Electronic Calibration
50
Calibration Interval
50
Adjustment Is Recommended
51
Recommended Test Equipment
52
Basic Operating Test
53
Backlight Test
53
Testing the Display
53
Input-A Terminal Test
54
Input-Ma Terminal Alert Test
54
Calibration Process
54
Test Considerations
55
Input Connections
56
Performance Verification Tests
56
Calibration Security
60
Unsecuring the Meter for Calibration
60
Using the Front Panel for Adjustments
62
Adjustment Considerations
63
Valid Adjustment Input Values
64
Calibration Adjustments
65
Exiting Adjustment Mode
69
Calibration Count
70
Calibration Errors
70
6 Specifications and Characteristics
71
DC Specifications
72
AC Specifications
73
Resistance Specifications
74
Diode Check/Audible Continuity Test Specifications
74
Temperature Specifications
75
Capacitance Specifications
76
Harmonic Ratio Specifications
76
Frequency Specifications
78
Frequency Sensitivity During Voltage Measurement
78
Frequency Sensitivity During Current Measurement
78
Operating Specifications
79
General Characteristics
80
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Agilent Technologies U1242A Specifications
General
Brand
Agilent Technologies
Model
U1242A
Category
Multimeter
Language
English
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