HP 53132A Assembly And Service Manual page 210

Chapter 6 Backdating
The HP 53131A Calibration Procedures
CHANGE 1 (Firmware Revisions 3317, 3335, 3402, 3427)
(Continued)
The HP 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.
6-10 Assembly-Level Service Guide