W&T 57630 Manual page 149

W&T
Alarm
In addition you must specify whether an alarm is triggered only
once when the alarm condition is met. Alternately you can specify
an interval at which the alarm is repeated as long as the alarm
condition persists.
In the Interval field you can specify either E for one time or an
interval in minutes. Theoretical values between 1 and 4.2 billion
minutes are possible. If the field is blank or 0, no alarm will be
issued.
Subject to errors and modifications: 149