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Appendix G: Calibration
G–16
VX4101A MultiPaq Instrument User Manual
Hysteresis Calibration. Since this function uses an internal reference, it requires
no external inputs. The calibrator should either be disconnected or set to 0 V for
this step.
To calibrate hysteresis, do the following:
1. For the channel being calibrated, send the following command:
CALibrate[<channel>]:HYSTeresis
This command takes approximately 90 seconds to execute.
Low Frequency Compensation Adjustment. To adjust low frequency compensa-
tion:
1. Connect the function generator to the channel being calibrated, and set it to
output a 1 kHz square wave at ±2.5 ±0.1 V (1 MW load impedance).
2. For the channel being calibrated, send the command
CALibrate[<channel>]:LFCOmp
This command takes approximately 6 seconds to execute.
After performing all of the previous procedures steps for both channels, perform
the following required additional steps as required:
ARM Input Zero and Gain Correction. To adjust ARM Input zero and gain
Correction:
1. Set the calibrator to 0.00 ±0.001 V, and connect it to the ARM input of the
card.
2. Send the command
CALibrate:ARM:VALue 0.0
This command takes approximately 0.5 second to execute.
3. Set the calibrator to 20.0 V ±0.1%.
4. Send the command
CALibrate:ARM:VALue 20.0
This command takes approximately 0.5 seconds to execute.
Step Three: Common
Function and
Cross-Channel Calibration
Adjustments