HP manual About the HP 53181A Calibration Menu

2

Chapter 2 Service

About the HP 53181A Calibration Menu

• unsecure for calibration by entering the security code while the

	Counter is secured (CODE: )
	• change the security code by entering a new code while the Counter is
	unsecured (CODE: )
	• view the calibration count, which indicates the number of times that
	the Counter has been calibrated (CAL COUNT?). The calibration
	count increments up to a maximum of 32,767 after which it wraps
	around to 1. A calibration count of 0 indicates that the Counter is
	completely uncalibrated. (The calibration count is unaffected by
	interpolator calibration.)
	• get Help (HELP:) with any of the following:
	– how to calibrate (CAL?),
	– how to secure (SECURE?), and
	– how to change the code (CODE?)
NOTE	A good precaution is to use an HP-IB program (see the programming
	example titled “To Read and Store Calibration Data” in Chapter 3 of the
	Programming Guide) to read and store the calibration factors prior to
	initiating any calibration.

2-26 Assembly-Level Service Guide