Section 4: Software Commands
Page 4-4
8197 Instruction Manual
4.2.2
Alarm Timeouts
The command
ATx
reads or sets the time out period allotted for tracking alarms
AT1, AT2 and AT3. The default time out periods are
AT1
= 1 minute, AT2 = 2
1/2 hours
, and
AT3
= 30 days
. When the receiver is unable to track at least four
qualified satellites, a count down timer is started. If the receiver is unable to
reacquire qualified satellites within the assigned time out periods, the expired
time out alarm is asserted. An AT1 alarm is classified as a Minor alarm. AT2
and AT3 are Major alarms. To read the current time out values issue the
ATx
command as follows:
Type:
ATx <ent>
Where x = 1, 2, 3.
Response:
ALARM TIMEOUT x = DDD HH:MM:SS
Where x = 1, 2, 3
DDD = Days 000 … 366
HH = Hours 00 … 23
: = Colon Separator
MM = Minutes 00 … 59
SS = Seconds 00 …59
To Change the alarm time out periods place the unit in set mode and issue the
ATx
command as shown below:
Type:
ATx DDD HH:MM:SS
Response:
ALARM TIMEOUT x = DDD HH: MM:SS
