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Chapter 3 Visual User Interface
Using and Reading the Visual User Interface (the Receiver Status
Screen)
3-10 Operating and Programming Guide
When the GPS antenna is re-connected and the GPS signal has been
re-acquired, the Receiver has the ability to recover from holdover by
itself. The SYNCHRONIZATION area of the screen will show the
>>
marker pointing at the Recovery line (and then eventually at the
Locked to GPS line), the GPS Lock LED will illuminate, and the screen
will look similar toFigure 3-5.
Figure 3-5. Receiver Status Screen Following Recovery from
Holdover Operation
You can see the Receiver has recovered from holdover almost
immediately and it has returned to locked operation.
SYNCHRONIZATION
Receiver Status
---------------------------- ----------------------------
[
Outputs Valid/Reduced Accuracy
]
............................
...............................................
......................................................
ACQUISITION
ELEV MASK
Not Tracking: 0
Locked to GPS: Stabilizing frequency
UTC
ANT DLY
MODE
LAT
LON
HGT
HEALTH MONITOR
Recovery
Holdover
Power-up
SmartClock Mode
Tracking: 6
Self Test: OK Int Pwr: OK Oven Pwr: OK OCXO: OK EFC: OK GPS Rcv: OK
[ OK ]
Time
GPS 1PPS Synchronized to UTC
Position
Reference Outputs
PRN
2
7
19
22
26
C/NEl
71
34
41
67
24
10 deg
31
1.000 us
[GPS 1PPS Valid]
20:59:28 31 Jan 1996
0 ns
Survey: 71.4% complete
N
W
37:19:32.486
121:59:52.082
+40.06 m (GPS)
>>
Az
317
185
101
80
312
TFOM FFOM
HOLD THR
1PPS TI +10.6 ns relative to GPS
Predict 432.0 us/initial 24 hrs
Holdover Uncertainty
31 12 27
40
38
37
40
37
36