
5-22 Controller Cards
UM4.6:CS6003 Original — December 1991
R42 Zero
Adjustment
X00824–A
R44 Span
Adjustment
R19 Span
Current Output 2
R41 Span
Current Output 1
J2
J3
Figure 5-12. Type CL7011 Computing Controller Unit (With Dual
Current Output)
5.6.2 Calibration Procedure
Use the following procedure to calibrate the card:
Step 1: On the computing controller card ensure that J2 and J3 are in
the pin 2 to pin 3 position for current out.
Step 2: Verify that the calibrator ON/OFF switch is OFF.
Step 3: Insert the computing controller card shown in Figure 5-12, in
the test slot labeled COMPUTING.
Step 4: Set the calibrator ON/OFF switch to ON.
Step 5: Press the calibrator RESET switch. The IN PROGRESS
indicator lights and remains lit until the card self-test is
finished. When finished, the COMPLETE indicator should
light. If the COMPLETE indicator fails to light in one minute,
the computing controller card requires repair.
Step 6: Ensure the INT/EXT switch is set to INT.
Step 7: Connect jumpers from the +CO1 and –CO1 breakout
terminals to the 250 ohm LOAD terminals.
Step 8: Connect the voltmeter across the 250 ohm LOAD terminals.
Step 9: Press the CAL LOW mode switch. The OK indicator of the
CAL STATUS indicators should light. If not, adjust the ZERO
(R42) potentiometer on the computing controller card to the
mid range of settings over which the OK indicator lights.
5
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