Vaisala viewLinc-4.1-M211518 - Manual (Page 93)

About Alarms
viewLinc 4.1 Administrator Guide 83
Event Log Validation Alarms
An Event Log Validation Alarm indicates when changes have
been made to the event log from outside the viewLinc
system. Each entry in the event log has its own CRC which is
verified - if any changes have been made, an alarm is
automatically created, rendering data non-validatable. It
checks the CRC of event files, checks the CRC of event
records in the files, checks for missing records, and checks
for missing files. If any are discovered, an alarm is raised
and must be acknowledged.
Device Configuration Alarms
If you receive a Configuration Alarm, this indicates that your
device has stopped recording data history or was configured
incorrectly. This could be the result of being set to stop when
full, a delayed start, or the device could have an internal
error. This alarm can also be triggered if a channel has been
disabled in the device using vLog. To correct this issue, you
can verify or modify the Vaisala Veriteq device settings using
vLog. If the problem persists, contact your Vaisala technical
support representative. The default delay for configuration
alarms is 60 seconds. However this delay is bypassed for
certain alarm types such as Missing Channel alarms,
Configuration changes and Probe changes.
Device Validation Alarms
If you use a VL-type data logger, you’ll receive a Validation
alarm if the validation memory in the device is corrupted or
has been modified. Contact your Vaisala technical support
representative.
Device Calibration Alarms
If you use a VL-type device, Calibration Alarms send you
intermittent notification when your device is due for
calibration. You receive notifications at the following intervals:
3 months and 1 month before the calibration due date, then
again on the data logger’s scheduled recal date. This alarm
will remain active until the logger has been recalibrated.