Keysight Technologies 34959A Service Manual page 66

3 Calibration Procedures
Analog Output Adjustment
Install the 34951A module in the mainframe and allow a 1 hour warm-up before
performing these procedures.
This adjustment procedure sets a zero adjustment and a gain adjustment
constant for each DAC output. You must perform all the adjustments on one
analog output channel before adjusting the other analog output channel.
1 Install the module(s) in the instrument. Remove any inputs from the ABus
Remove any ABus connector before performing this procedure.
CAUTION
Under certain conditions, hazardous voltage levels capable of causing injury
WARNING
or death may remain even after external circuits have been disconnected. To
avoid electrical shock, remove the main power cord from the 34980A and
ensure all connections to the DUT, including field wiring to the instrument
and the analog bus (if present) are deenergized and all circuits are
discharged before coming in contact with the system. Ensure no hazardous
voltages remain on any accessible before handling any part of the
instrument and test setup, making connections to the system, removing
covers or cleaning the instrument.
2 Set the calibration security for the adjustment mode you desire, see
3 Send the CALibration:MODule? <slot> command to begin the
4 The command returns a value of "+0" if the calibration is successful.
66
connector.
auto-calibration procedure for all channels on the module in <slot>. You may
use the CALibration:MODule? ALL command to perform the
auto-calibration on all channels for all modules installed in the mainframe. The
complete procedure may take up to 1 minute per module. Be sure to set the
remote command time-out value appropriately.
A returned value of "+1" indicates a calibration failure.
Keysight 34980A Service Guide
page 62.