HP E1563A User Manual page 161

E1564A Gain
Adjustment
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.
The HP E1564A 4-Channel Digitizer has an internal DAC that outputs to a
calibration bus on the front panel D-connector. This procedure uses the
calibration bus and does not require an external DC Standard.
1. Reset the HP E1564A Digitizer by executing a *RST command.
2. Connect a voltmeter to the Calibration Bus Output on the front panel
D-connector (see the following diagram). Set the voltmeter to the
DCV function.
3. Prepare the HP E1564A for calibration:
Set the channel's range: VOLT<channel>:RANG <range>
Set the calibration source to internal: CAL:SOUR INT
Set the CAL DAC output voltage: CAL:DAC:VOLT <voltage>
(see the following Gain Adjustment Points table for <range> settings
and CAL DAC <voltage> setting)
4. Note the voltmeter reading from the calibration bus output.
5. Send the value measured from the calibration bus output as the
parameter for the calibration value: CAL:VAL <voltage>
HP E1563A and E1564A Adjustments 161