Skipper DL850 - Interface and Functionality Problems

Edition: 2017-09-25
Page 58 of 92
Chapter: 6. Trouble Shooting
Symptom Cause Remedy
Interface problems
NMEA input signals are not listed in
the NMEA input screen.
1. Wrong polarity of input signals. 1. Swap NMEA input lines.
NMEA input signals are listed in
the NMEA input screen, but not
accepted by the DL850.
1. DL850 initialization.
2. Irregular message mnemonic. Red:
Not recognized.
1. Cycle DL850 power / do a “factory
reset” after NMEA connection is
established.
2. Check remote (talker) setup.
NMEA output signals are not
accepted by the remote system.
1. Remote (listener) setup. 1. Verify correct remote (listener) setup.
Analogue output malfunctions. 1. Incorrect range settings. 1. Verify upper and lower limits in
status screen.
Pulse output malfunctions. 1. Incorrect pulse frequency settings. 1. Verify pulse settings in status screen.
Basic functionality
Constantly wrong speeds or no
speed.
1. Wrong calibration.
2. Damaged sensor.
1. Check calibration/re calibrate.
2. Replace sensor.
No bottom tracking. 1. Too deep water (> 150 m). 1. See specications for depth range,
“Performance” on page 67.
Bottom tracking is intermittent or
erroneous.
1. Marginal gain or power settings.
2. Weather conditions.
3. Transducer installation faulty.
1. Adjust settings.
2. Try adjusting gain and power
settings.
3. Check transducer wiring.
No echo gram contour. 1. Echo sounder is switched o. 1. Echo sounder can be switched on in
screen Diagnostics menu 3.
Note: Not recommended used if other
echo sounders are in operation.
Unrealistic aft speed values in
docking mode.
1. Wrong setup of ship parameters. 1. Check installation values for over all
length and bow to sensor.
No water track, just bottom track. 1. Flashing GPS-BT, too weak signals.
2. Not ashing GPS-BT, sensor failure.
1. Contact manufacturer, if problem
persists.
2. Contact manufacturer.
SKIPPER Electronics AS
Operation and Installation DL850 270 kHz