Campbell Scientific TX312 High Data Rate GOES Transmitter - Manual (Page 90)

Appendix G. Extended ASCII Command Set
G-18
If a transmission has occurred since the unit was last powered up, the
transmitter responds to the command with:
Tx Status: Failsafe Tripped/OK
Tx Type: Timed/Random/Test
Last Tx Length: 30 bytes
Last Tx Start Time: 2004/12/16 23:29:48
Last Tx Stop Time: 2004/12/16 23:29:49
Forward Power: -23.1 dBm
Power Supply: 12.0 V
If a transmission has not occurred since power up, the transmitter will respond
with:
No Tx Has Occurred
G.6.4 Read GPS Status
Syntax:
GPS
Access level: USER
TX312 State: Enabled/Disabled
This command returns the current GPS status including satellite numbers and
signal strengths in the following format if the GPS is on:
Fix Status: Full Accuracy
Almanac Available: N
PPS Output Stable: N
UTC Offset = 0.000000
Satellite # Signal
Strength
30 10.80
23 no
lock
10 4.00
25 1.80
5 6.60
21 no lock
17 6.40
2 6.80
If the GPS is off the command returns:
GPS is off