Section 4: Software Commands
NetClock/GTP Instruction Manual
Page 4-21
4.13
GPS LOCK TIME OUT
The
LOCK
command reads or sets the GPS lock time out period. A timer is started
whenever the receiver is not tracking any satellites. The timer is reset when the
receiver reacquires a satellite. A GPS lock alarm is asserted if the receiver fails to
reacquire satellites within the allotted time out period. A GPS Lock alarm actuates the
Minor Alarm relay and removes outputs placed under Lock Signature Control.
To view the current GPS lock time out period issue the
LOCK
command as shown
below:
Type:
LOCK <ent>
Default Response:
GPS LOCK TIME OUT= 00:15:00
To change the lock time out value, place the clock in
Set Mode
and issue the
LOCK
command as follows:
Type:
LOCK [HH:MM:SS] <ent>
Where:
HH:MM:SS = Hours:Minutes:Seconds
NOTE
: Due to alarm sequencing, Minor escalating to Major, the
LOCK time out period must be shorter than the SYNC time out
period.
Example:
Change the lock time out period to 1 Hour and 30 Minutes.
Type:
SM ON <ent>
Response:
SET MODE ON
Type:
LOCK 01:30:00 <ent>
Response:
GPS LOCK TIME OUT= 01:30:00
