HP E1429A ∙ *RST Condition none Example Performing a gain calibration, Confarrvolt 100,4.8,DEF,@1

CALibration[<chan>]:GAIN

sample rate, the command would appear as:

CAL:GAIN DEF, .05, one

∙CALibration:GAIN forces the internal reference (20 MHz) oscillator to be used. Sample rates are attained using that reference.

∙The default number of readings is 1000, and the default period is 1.0E-4 seconds. These numbers were chosen such that the product of the two is a period that is an integral multiple of both 50 Hz and 60 Hz line cycles (.1 seconds in this case).

∙When calibrating gain on the differential ports, an error could occur which contains the text "All readings have same value in cal_mean routine". The most likely cause of this error is that the two differential inputs on the port are not grounded properly, and a common mode overload is occurring.

∙The product of the period and number of readings will be checked to see if it exceeds 10 seconds, and if so, error -221;"Settings conflict; Calibration time too long" occurs.

∙Normally, upon completion the new gain values would be stored to the non-volatile calibration memory. This can be overridden by setting CALibration:STORe:AUTO OFF, in which case the new gain values will be stored to calibration memory only when the CALibration:STORe command is executed.

∙Related commands: CALibration:VALue, CALibration:SECure:STATe, CALibration:STORe:AUTO, CALibration:STORe

∙*RST Condition: none

Example Performing a gain calibration

CONF:ARR:VOLT (100),4.8,DEF,(@1)	Configure for 5 volt range. If CONF is
	used, it must be the first step because it
	performs a soft reset of most other settings.
CAL:SEC:STAT OFF,E1429	Disable security, assuming factory-set
	security code
CAL:STOR:AUTO OFF	Disable automatic storage of calibration
	constants
CAL1:VAL 5.05	Set value to > 85% of positive full scale on
	5 volt range
CAL1:GAIN DEF,DEF	Calibrate channel 1 for gain using default
	sample rate and number of points. Note
	that linearity will not be done because this
	is not the 1 volt range.
CAL1:STOR	Force the gain settings just calculated to be
	stored into calibration RAM.

204 Command Reference CALibration[<chan>] Subsystem