HP 82479A Owner's Manual page 182

Operational Verification
14.3 RUNNING THE TEST
To prepare the HP 3421A Data Acquisition/Control Unit for the test, remove any test assemblies
connected to the option cards, and install the instrument as the first device on the (first) interface loop. If
any relay card is configured for 4-wire € connect the 4-wire Q terminals to the 2 wire /volts terminals
on the front panel. Otherwise leave the front panel terminals disconnected.
FL VERIFY
Frepare Max Slat 87
Y), NJ, or [QJ
Frepare Dig Slot
MN Q
Testing Channel B
Channel nn Falls
nn Errors Found
14-4
Run the verification program.
The program finds and resets the first HP 3421A on the
loop, and reads the status registers to determine the
configuration.
If the first slot has a multiplexer card installed, the
program waits for you to install the DTB. Press when
the DTB is ready. Press to advance to the test for the
next slot. Press [Q) to end the program.
If the first slot has a digital I/O assembly installed, the
program waits for you to install the DTB and connect the
SV supply. Press when the DTB is ready. Press to
advance to the test for the next slot. Press [Q] to end the
program.
As each channel is tested, the program displays a message
indicating the progress of the test.
If a channel fails, the program will sound a beep on the
HP-71 and display this message.
After all slots have been tested, the program indicates the
number of errors found.