Chapter 2 Service
The HP 53181A Calibration Procedures
2-32 Assembly-Level Service Guide
2
c. Press key once, and then press key three times.
The Counter should display
CODE: 53000
.
d. Press key once, and then press key once.
The Counter should display
CODE: 53100
.
e. Press key once, and then press key eight times.
The Counter should display
CODE: 53180
.
f. Press key once, and then press key once.
The Counter should display
CODE: 53181
.
g. Finally, press Enter key.
CAL UNSECURE
is displayed.
NOTE
If “53181” is NOT the correct security code, the Counter will display
BAD CODE
.
4Press Scale & Offset key until
CAL: OFFS 1 ?
is displayed.
5Press Enter key.
A scrolling message on the display will ask you to remove any signals
connected to Channel 1. Follow the instruction.
6Press 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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