GE Bently Nevada 3300/25 Operation Manual page 42

3300/25 Dual Accelerometer Input Monitor Operation Manual
7. Gradually increase the power supply voltage (more negative) until the OK LED
goes off (upper limit). Verify that the upper OK Limit is between -11.5 Vdc and -12.0
Vdc and that the OK Relay de-energizes.
8. Return the power supply voltage to -7.5 Vdc and verify that the OK LED comes
back on and the OK Relay energizes.
9. For Dual Transducer Inputs, reconnect channel A wiring, and repeat the steps in
this section for channel B.
10. For Single Transducer Input repeat steps 4 to 8 for channel B to test the channel B
OK limits.
When finished, disconnect the power supply and multimeter and reconnect the wiring to
the transducer input terminals on the Signal Input Relay Module. Verify that the OK LED
comes on and the OK Relay energizes.
36