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U1231A
Agilent Technologies U1231A Service Guide
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2
Service and Mainte
nance
Fuse Replaceme
nt
34
U1231A/U1232
A/U1233A Service Guide
Figure 2-2
Replacing the fuse
1
2
3
49
51
Table of Contents
Default Chapter
1
Digital Multimeter
1
Restricted Rights Legend
2
Safety Symbols
3
Safety Considerations
4
Environmental Conditions
6
Table of Contents
11
1 Calibration Procedures
17
Agilent Calibration Services
18
Closed Case Calibration
18
Calibration Interval
18
Other Recommendations for Calibration
19
Recommended Test Equipment
20
Table 1-1 Recommended Test Equipment
20
Basic Operating Test
21
Backlight Test
21
Display Test
21
Figure 1-1 LCD Display Screen
21
Calibration Process
22
Test Considerations
23
Performance Verification Tests
24
Table 1-2 Performance Verification Tests
24
Calibration Security
28
Unsecuring the Instrument for Calibration
29
To Unsecure the Instrument from the Front Panel
29
Figure 1-2 SECU Display
29
Figure 1-3 Calibration Security Code Display
29
Figure 1-4 Calibration Security Code Operation
30
To Change the Calibration Security Code
31
Figure 1-5 CSEC Display
31
Figure 1-6 Factory Default Calibration Security Code Display
31
To Reset the Calibration Security Code to Its Factory Default
32
Figure 1-7 Sern Display
32
Figure 1-8 Calibration Security Code Display
32
Using the Front Panel for Adjustments
34
Adjustment Considerations
34
Adjustment Procedure
35
Figure 1-9 Calibration Reference Value Display
35
Valid Adjustment Input Values
37
Table 1-3 Adjustment Input Values
37
Functional Tests
40
Figure 1-10 Vsense Functional Test
41
Exiting the Adjustment Mode
42
Calibration Count
43
Calibration Error Codes
44
Table 1-4 Calibration Error Codes
44
Troubleshooting
46
Table 2-1 Operating Checklist
46
2 Service and Maintenance
47
Checking the Fuse
47
Table 2-2 Fuse Displayed Readings
47
Figure 2-1 Testing the Fuse
48
Fuse Replacement
49
Figure 2-2 Replacing the Fuse
50
Returning the Instrument for Service
51
Replaceable Parts
52
To Order Replaceable Parts
52
Types of Service Available
53
Extended Service Contracts
53
Obtaining Repair Service (Worldwide)
54
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Quick Start Guide
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Agilent Technologies U1231A Specifications
General
Brand
Agilent Technologies
Model
U1231A
Category
Multimeter
Language
English
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