HP 53132A Assembly And Service Manual page 128

NOTE
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Chapter 2 Service
The HP 53181A Calibration Procedures
c. Press key once, and then press
The Counter should display CODE: 53000 .
d. Press key once, and then press
The Counter should display CODE: 53100 .
e. Press key once, and then press
The Counter should display CODE: 53180 .
f. Press key once, and then press
The Counter should display CODE: 53181 .
g. Finally, press Enter key.
CAL UNSECURE is displayed.
If "53181" is NOT the correct security code, the Counter will display
BAD CODE .
Press Scale & Offset key until CAL: OFFS 1 ? is displayed.
Press Enter key.
A scrolling message on the display will ask you to remove any signals
connected to Channel 1. Follow the instruction.
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.
This completes the Offset Calibration procedure. Proceed to the next
procedure to calibrate the gain.
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key three times.
key once.
key eight times.
key once.
Assembly-Level Service Guide