HP E1563A, User Manual, Page: 160 / 166

160 HP E1563A and E1564A Adjustments
E1563A 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.
1. Reset the HP E1563A Digitizer by executing a *RST command.
2. Set the DC Standard output to 55 mV for the first gain adjustment.
3. Connect the DC Standard output across the HP E1563A "H" and "L"
input terminals of channel 1.
4. Prepare the HP E1563A for calibration:
Set the channel’s range: VOLT<channel>:RANG <range>
Set calibration source to external: CAL:SOUR EXT
Send input value: CAL:VAL <input voltage>
(see Table E-1, Gain Adjustment Range Input Voltages, for <range>
and <input voltage> values)
5. Perform the adjustment by sending the CAL:GAIN<channel>
command (adjusts each channel in about 5 seconds).
6. Send the SYST:ERR? command and read the result to verify the
calibration command was successful. See Chapter 3, SCPI Command
Reference, for details on reading system errors.
7. Repeat steps 3 through 6 for the ranges and inputs given in Table E-1.
8. Repeat steps 2 through 7 for channel 2.
Note
Each range in the gain adjustment procedure for each channel takes less
than 5 seconds to complete.
** Valid calibration input values sent to the digitizer are 0.85 to 0.98 of Full
Scale for the range being adjusted. The <input voltage> parameter of the
CAL:VAL command must equal the actual input value. For example, if you
input 0.9V to calibrate the 1V range instead of 0.95, you send CAL:VAL 0.9
to the digitizer prior to the CAL:GAIN<channel> command.
Table E-1. Gain Adjustment Range Input Voltages.
Channel Range Input Voltage
62 mV 55 mV
0.25V 0.24V
1V 0.95V
4V 3.8V
16V 15V