American Magnetics 188CPS Point-Sensing Instrument - Manual (Page 20)

19
3 Operation
1. Energize the instrument
After completion of the Installation procedures, energize the instrument by placing
the power toggle switch in the POWER position. As a power-up test, all LEDs will
energize (green color), all relays contact pairs will close, and the instrument will
sound a constant tone for 1.5 seconds. At the end of the power-up test, a series of
beeps will occur. One beep indicates the calibration has been successfully recovered
from internal memory. Two beeps indicates that no calibration has been previously
performed with the instrument.
Caution
Three beeps at the end of the power-up test, or after a MIN or MAX
calibration, indicates a checksum failure of internal non-volatile memory. A
checksum failure prevents the instrument from recovering calibration data. If
this failure occurs, do not continue to use the instrument and contact an AMI
Technical Support Representative for further assistance.
Note
The instrument should always beep at least once at the end of the power-up
test. If this does not occur, the instrument is not functioning properly. Power
the instrument OFF and then ON again. If the instrument fails to beep again
at the end of the power-up test, please contact an AMI Technical Support
Representative for assistance.
2. Perform a calibration if required
If the instrument has not been previously calibrated, refer to the Calibration section
and perform the calibration procedure.
Note
If a rear panel oscillator input is not connected or is not operating properly
during calibration, the calibration procedure will mark the input as inactive.
The corresponding front panel LED will always be de-energized and the relay
contact pair will always be open. The input will not be usable thereafter until
a MIN and MAX calibration has been performed with the oscillator input
properly connected to a functioning oscillator and sensor.
After calibration, power the instrument off and then on and verify one beep at the end
of the power-up test which indicates successful calibration data recovery from internal
non-volatile memory.