
5-34 Controller Cards
UM4.6:CS6003 Original — December 1991
Step 6: Press the calibrator RESET switch. The IN PROGRESS
indicator lights and remains lit until the card self-test is
finished. When finished, the calibrator COMPLETE indicator
lights. If the COMPLETE indicator fails to light in one minute,
the service transfer card requires repair.
Step 7: Connect the current source across the 250 ohm LOAD
breakout terminals.
Step 8: Set the current source output to 12 milliamps.
Step 9: Connect a jumper between the +CO1 breakout terminal and
one 250 ohm LOAD terminal and a jumper between the –CO1
breakout terminal and the other 250 ohm LOAD terminal.
Step 10: Set the SVCE XFER TEST switch to CONT IN. The service
transfer display station REMOVE CONTROLLER indicator
should light. If the REMOVE CONTROLLER indicator does
not light, the service transfer unit requires repair.
Step 11: When the REMOVE CONTROLLER indicator lights,
disconnect the current source.
Step 12: Set the SVCE XFER TEST switch to CONT OUT. The service
transfer display station numerical display should read 50
± 1.
If the service transfer display station numerical display does
not read 50
± 1, the service transfer card requires calibration.
If the card has been calibrated and the proper reading is still
not obtained, the service transfer card requires repair.
Step 13: Connect the voltmeter across the calibrator 250 ohm LOAD
terminals.
Step 14: Use the manual slewing pushbuttons on the service transfer
display station to slew the service transfer unit output up an
down. When the service transfer display station numerical
display reads 100 the voltmeter should read 5.00
± 0.08 volts
dc. When the service transfer display station numerical
display reads 0 the voltmeter should read 1.00
± 0.08 volts
dc. If the proper readings are not obtained, ensure the service
transfer card is calibrated and repeat the functional test. If the
proper readings are still not obtained, the service transfer unit
requires repair.
Step 15: Disconnect the voltmeter.
Step 16: Connect the current source across the 250 ohm LOAD
terminals (ensure the jumpers to the +CO1 and –CO1
terminals are still in place).
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