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5. Connect a 60 ½ to 75 ½ resistor across Pins A and C of the MS connector or pins H and K of TB3. The
voltage across the resistor should be +14.7 Vdc (minimum).
6. Connect a 230 ½ to 250 ½ resistor across Pins B and C. The voltage across the resistor should
be -14.7 Vdc (minimum).
11.3 Grounding
Trace all ground and power supply common connections. A single earth ground should be connected to
the power supply common (circuit ground). An additional ground is connected to the case of the analog
output module (AOM). If the AOM is suspect, remove the mounting screws and place the box on insulat-
ing material (i.e. wood) then recheck the output readings.
11.4 Connections
Check the solder connections in the J1 cable. Ensure no cold solder joints are present. Perform a continu-
ity check between the J1 connections to ensure no shorts are present.
11.5 LDT Signals
Disconnect connector J2 from the AOM. Apply power and check the J2 readings, using Figure 11-1. If the
voltages are correct, connect J2 and check the signals at pins B and C with an oscilloscope.
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