ENDEVCO 6634C
INSTRUCTION MANUAL
IM6634C
Page 4-9
B.
RS-232 ALARM
When the vibration levels exceed either Alarm Level, the 6634C sends the following signals on the RS-232 bus (if
unit is in Listener/Talker mode):
K0XXXX "BEL"
Warning alarm just triggered.
K1XXXX "BEL"
Alert alarm just triggered.
To determine if either of the alarms have been triggered, send the following command to the 6634C (after
selecting the specific 6634C unit as Listener/Talker using the InnXXX; command):
K?XXXX ;
Request current Alarm Status
Unit responds with:
K0XXXX "BEL"
Warning alarm has been triggered.
K1XXXX "BEL"
Alert alarm has been triggered.
These Warning and/or Alert Alarm responses are given even though the vibration signal has subsequently
dropped below the corresponding Alarm Level.
C.
ALARM RESET
Because the Warning and/or Alert Alarm indication is maintained even though the vibration signal subsequently
drops below the corresponding Alarm Level, the Alarms must be Reset to provide valid current indications.
To remotely Reset the Alarms, send the following command to the 6634C:
RXXXXX ;
Reset both alarms
6.
EXTERNAL CALIBRATION
In External Calibration, critical parameters of the 6634C are adjusted to ensure performance within specification.
Before remotely initiating the External Calibration of the 6634C, an external calibration source must be connected to the
EXT CAL input on the rear panel of the unit. The external calibration source must be adjusted to provide a 5.000V pk,
300.0 Hz sinewave signal at the EXT-CAL input (and at the VEL COIL/RCC input if velocity coil or RCC calibration is
required).
To initiate the External Calibration process, send the following command to the 6634C:
CXXXXX ;
Calibrate system
Allow 3 minutes for the calibration to be completed.
If the calibration is successfully completed, the following response is provided by the 6634C (if the unit is in Listener/Talker
mode):
CXXXXX "BEL"
Calibration successfully completed