CTC Union MAX X Box Product Manual page 12

The following LED Readout indicates the circuit integrity:
1 . Green LED: Normal . Indicates proper connection and an output bias will be given,
indicating the health of the sensor (4 – 16 V indicates a healthy accelerometer) .
2 . Yellow LED: Open Circuit . Indicates one of the following:
a . Cable connector is not connected to accelerometer .
b . Cable is open circuit (broken or not connected @ one end) .
c . Accelerometer is not functioning correctly
3 . Red LED: Short Circuit . Indicates one of the following:
a . Water or contamination in the connector .
b . Reverse Wiring ((+) and (-) leads are reversed) .
c . Wires in termination box or cable connector (+) & (-) are touching .
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