Specifications

Chapter 2 Service
The Agilent 53210A/53220A/53230A Calibration Procedures
Assembly-Level Service Guide 137
It is not necessary to unsecure the counter for auto-calibration. Auto-Cal
does not increase the Cal Count. Auto-Cal is also a subset of Self-Test, so
every time you perform a counter Self-Test you also perform an Auto-Cal.
It is not necessary to disconnect signal input cabling when performing
auto-calibration, but all input signals should be turned OFF.
NOTE It is recommended that Auto-Cal be performed frequently during
routine counter operation, especially if there has been an internal
ambient temperature change of 5
o
C or more since the last Auto-
Cal. A good practice is to perform Auto-Cal at the beginning of a
new day of use, at an operator shift change, or other strategic
time. However, it may not be desirable to perform an Auto-Cal in
the middle of a series of measurements, since the cal constants are
updated each time Auto-Cal is performed.
The current internal ambient temperature and the temperature at the
last Auto-Cal can be seen simultaneously using:
[Utility] / (Cal AutoCal) / (Measure Temp)
To Run AutoCalibration:
1Press the Utility key and then the Cal / AutoCal softkey to display
the calibrate options.