Kongsberg M3 Sonar Operator's Manual page 44

M3 Sonar PHS Operator Manual
Symptom: Reduced heading performance.
Probable cause
There is a problem
with the Motion
Reference Unit
(MRU).
The antenna baseline
has not been properly
calibrated.
The Seapath 130
sensor unit is not
receiving data from
GNSS receiver No.
1 or 2.
Symptom: Reduced position/velocity performance.
Probable cause
No differential
corrections are input
on the GNSS serial
cable of the sensor
unit.
The vessel is out
of range to a radio
reference station
and the differential
corrections are
therefore missing.
The antenna or the
MRU offset setup is
incorrect.
Symptom: No data is being received from the Seapath 130 sensor unit.
Probable cause
The Seapath 130
sensor unit is
powered down.
Your PC is on a
different network
from the Seapath 130
sensor unit.
42
Corrective Action
Troubleshoot the MRU, as described above.
Run the Seapath operator software and make sure that the antenna baseline setup
parameters in
NAV Engine Configuration
properly configured. If needed, perform a new calibration of the antenna baseline.
Run the Seapath operator software and make sure that data appears in the
in the menu and by selecting GNSSA1 for GNSS antenna No. 1 and
Monitor Tools
GNSSB1 for antenna No. 2. If you still cannot see any data, perform a receiver reset
→
by selecting
System Restart
Corrective Action
Run the Seapath operator software and check that the link for differential corrections
is properly set up in the
DgnssLink
in the
NavEngine configuration
Run the Seapath operator software, then select
location of the reference stations connected to the Seapath 130 sensor unit. If the
reference station is too far away or is in the shadow of geographical obstructions or
other equipment on board, reception may be unreliable or missing.
Check the setup of the lever arms from the Navigation Reference Point (NRP)
to antenna #1 and to the MRU. Check particularly that the sign for each of
the vector components are correct by entering the
→ →
in the
Sensor GNSS MRU
Corrective Action
Check the power connection to the unit.
Check that the PC with the software is configured to the same subnet as the Seapath
130 sensor unit.
→ →
Sensors GNSS
→
.
GNSS receiver
configuration, part of the Input/Output subfolder
.
→
Tools
Geometry
configuration.
NavEngine
→
are
Geometry
Port
to view the
DGNSS Monitor
subfolder under
922-00037041/1.1