Using The Calibration Menu; Overview Of The Calibration Menu - HP 53131A Operating Manual

Chapter 2 Operating Your Universal Counter

Using the Calibration Menu

Using the Calibration Menu

Overview of the Calibration Menu

The Calibration menu is accessed by holding the Scale & Offset key and
POWER
cycling the POWER key. All of the calibration factors and security
Scale &
settings are stored in non-volatile memory, and do not change when power
Offset
has been off or after a remote interface reset.
On / Stby
The security code is set to 53131 or 53132 (corresponding to the model)
when the Counter is shipped from the factory. If you forget your security
code, you can reset the security code to the model-number default by
resetting all of the non-volatile memory to a default state. See the
HP 53131A/132A Assembly-Level Service Guide for more information.
The Calibration menu allows you to:
• view the calibration security status of the Counter (CAL SECURE or
CAL UNSECURE)
• initiate the Counter's calibration routines, which can perform
automatic calibration of the voltage offset and gain of the front-end
input amplifiers (CAL: OFFS 1 / 2 ?, GAIN 1 / 2?), of the optional
timebase (CAL: TIMEBAS?), and of the differences in electrical
path-length between channels 1 and 2 (CAL: TI QUIK? and
CAL: TI FINE?)
• secure against calibration by entering the security code while the
Counter is unsecured (CODE:)
• 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:)
Operating Guide 2-67