Gain Calibration Adjustment Overview

The ADC and zero calibration adjustment procedure must have been recently performed before beginning gain calibration. Gain calibrations can be made using either the front or rear input (not available on the 34460A) terminals. On the 34461A/65A/70A, make sure the Front/Rear switch matches the terminals in use.

Never turn off the instrument during a gain or flatness calibration. This may cause calibration memory for the present function to be lost.

Valid Gain and Flatness Calibration Input Values

Gain calibration can be accomplished using the following input values.

Function	Range	Valid Amplitude Input Values
DC Volts	100 mV to 100 V	0.9 to 1.1 x Full Scale
DC Volts	1000 V	450 to 1000 V
DC Current	100 µA to 1 A	0.9 to 1.1 x Full Scale
	3 A	1.5 A to 2.5 A
	10 A	1.8 A to 10 A
Ohms (2W and 4W)	100 Ω to 100 MΩ	0.9 to 1.1 x Full Scale
Frequency	Auto	Input > 100 mV rms, 9.9 kHz to 110 kHz
AC Current (rms) ^[1]	100 µA to 1 A	0.9 to 1.1 x Full Scale
	3 A	0.9 A to 2 A
	10 A	2 A to 10 A
AC Volts (rms) ^[1]	100 mV to 10 V	0.9 to 1.1 x Full Scale
	100 V	40 V to 110 V
	750 V	400 to 750 V

^[1] Valid frequencies are nominal frequencies ±1%.