HP 34970A manual 159

Chapter 4 Features and Functions

Calibration Overview

W W

You can query the instrument to determine how many calibrations have been performed. Note that your instrument was calibrated before it left the factory. When you receive your instrument, be sure to read the count to determine its initial value.

∙ The calibration count is stored in t”		memory in the
mainframe, and wx	change when power has been off, after a

Factory Reset (*RST command), or after an Instrument Preset (SYSTem:PRESet command).

∙The calibration count increments up to a maximum of 65,535 after which it rolls over to “0”. Since the value increments by one for each calibration point, a complete calibration may increase the value by many counts.

∙ The calibration count is also incremented with calibrations of the			4
	DAC channels on the multifunction module.
∙	Sctxt”	:
	CAL COUNT
∙	exx Vxytvx bxt”	:
	CALibration:COUNt?

159