Instruction manual

Chapter 2 Service
The Agilent 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.
4 Press Scale & Offset key until CAL: OFFS 1 ? is displayed.
5 Press Enter key.
A scrolling message on the display will ask you to remove any signals connected to
Channel 1. Follow the instruction.
6 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.