DOC 4380A
4380A O & M Manual
50
098-00723-000
– Jul 2017 Revision 4.0
SyncSystem 4380A O&M Manual
LEDs lit on the front panel, the system is operating correctly based on the current user settings. Details of
the system operation can be observed using the following steps:
A.
Access the command port.
B.
Type
status
and press enter. This command displays numerous fields that indicate system status.
C.
There should be no active alarms on the system.
4380A> status
[alarm] no alarm
D.
The GPS Receiver should be tracking at least 4 satellites, the signal description should be good
and the system should show it is locked onto L1 and L2 ([freq] dual) and the receiver should be
reporting an accurate position.
[gps]
[auto_positioning]
This only applies when the position_mode=auto and
[time_remaining] 8 hours, 26 seconds
the system has not completed the survey
[mode]
[desc] tracking
[value] 4
[model]
[hw_version] OEMV3G-4.00-X2T
[name] L12LV
[serial_number] DAB08190172
[sw_version] 3.400
[position]
[alt] 4.99989000001
[fixed] false
Auto position mode - position_period has not expired
[lat] 3.84662811001
[lon] -7.74408620601
[satellite]
[number] 7
[signal]
[avg] 4.53184242201
[desc] Good
[enum] 2
[freq] dual
[max] 4.98779983501
[min] 3.89739990201
1.
Look at the [satellite] [signal] [desc] field to get an idea on signal quality:
a.
Good: Indicates that the signals being received from the GPS satellites are at an
appropriate level.
b.
Fair: The signal level is either too high or too low. GPS is being received and the system
will function but the levels are not optimal. An in-line amplifier may be required if the
cable loss is too great.
c.
Poor: Signal quality is very bad. System will perform very sporadically. An in-line
amplifier will be required if the cable loss is too great.
2.
The [satellite] [number] field should be at least 4. If the value is 0 then no satellites are being
tracked. Wait ten-fifteen minutes after the Oscillator Lock light is Green to give the system a
chance to acquire satellites. If the value is still 0 fifteen minutes after the Oscillator Lock
light turned green then there is likely a problem with the antenna setup.
If you are using the manual position mode and the system is reporting satellites but the GPS
Tracking indicator is off the position entered is incorrect. Verify the position was entered
correctly. If this problem persists, switch the system to the
auto
mode
(position_mode auto
)
and allow the system to resurvey the antenna position.
3.
The [gps] [satellite] [signal] [freq] field indicates whether single frequency or dual frequency
measurements are being received from the receiver. If only single frequency measurements
are being received then check the antenna and make sure that it is the Novatel (L1/L2)
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