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Digitizers Adjustments 167Appendix E
E1564A Gain Adjustment
NOTE The zero adjustment procedure MUST have been recently performed prior
to beginning any gain adjustment procedure. Zero adjustment should be
performed one time followed by the other gain adjustments. Each range in
the gain adjustment procedure for each channel takes less than 5 seconds
to complete
The E1564A 4-Channel Digitizer has an internal DAC that outputs to a
calibration bus on the front panel Calibration Bus Output (D-connector).
This procedure uses the calibration bus and does not require an external
DC Standard.
You must set the "FLASH" and "CALIBRATION CONSTANTS" switch
to "write enable" before you can store new calibration constants. It is
recommended you do this prior to starting the calibration procedures.
Execute CAL:STORe to store the new calibration constants following the
calibration procedures. Restore the switches to the "Read Only" position
after you store the new calibration constants.
1 Reset the E1564A Digitizer by executing *RST.
2 Connect a voltmeter to the Calibration Bus Output on the front panel
D-connector (see Figure E-1). Set the voltmeter to the DCV function.
Figure E-1. E1564A Gain Adjustment Voltmeter Connections