
Chapter 6 Backdating
The Agilent 53131A Calibration Procedures
6-10 Assembly-Level Service Guide
6
CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427) (Continued)
The Agilent 53131A Calibration Procedures
To Calibrate the Offset for Channels 1 and 2
1 To access the Utility menu, power down, and press and hold the Recall (Utility)
key, then press POWER key.
2 Press Recall (Utility) key until CAL: OFFS 1 ? is displayed.
3 Press Enter key.
The display will ask you to remove any signals connected to Channel 1. Follow the
instruction.
4 Press Enter key.
The Counter momentarily displays CALIBRATING, and then it should display
OFFS 1 PASS.
If the fail message is displayed, refer to the troubleshooting section in this chapter.
5 To calibrate Channel 2, press any one of the arrow keys until CAL: OFFS 2 ? is
displayed.
6 Press Enter key.
The display will ask you to remove any signals connected to Channel 2. Follow the
instruction.
7 Press Enter key.
The Counter momentarily displays CALIBRATING, and then it should display
OFFS 2 PASS.
If the fail message is displayed, refer to the troubleshooting section in this chapter.
This completes the Offset Calibration procedure. Proceed to the next procedure to
calibrate the gain.
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