Edgetech 4125 Series User Manual

5-21
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
11. Discover
not
displaying
GPS
Incorrect GPS
settings
Check for obstructions on antennae.
Discover’s com
port not selected
Check Configuration, Serial Ports in Discover, and correct or enable port.
Topside PC’s com
port faulty
Use other com port.
12. Missing
Compass
Data
Incorrect
Discover last used
.jni file
Delete file and re-open and re-configure Discover.
Incorrect Tow
Fish
sonarserial.ini file
Contact EdgeTech Customer Service
Incorrect or faulty
Tow Fish CPU
com port
Contact EdgeTech Customer Service
Faulty Compass
To replace compass and re-calibrate, Contact EdgeTech Customer Service.
13. Variation
in
Compass
Heading
Compass in need
of calibration
Perform compass calibration.
14. No Depth
Display
Incorrect
Discover last used
.jni file
Delete file and re-open and re-configure Discover.
Clogged or faulty
depth sensor
Clean depth sensor port with low pressure air.
To replace sensor, Contact EdgeTech Customer Service.
Table 5-2: 4125 Towfish Troubleshooting Guide
5.7 Tow Cable Inspection
If you think cable or connector has malfunctioned, perform the following three simple cable inspections:
 Check for cable twisting.
 Check the external jacket.
 Perform a point to point continuity test of the conductors.
Inspect whether any part of cable was bent beyond the allowable radius. The minimum bending radius of
tow cable used with the 4125 Series Dual-frequency Side Scan Sonar System is 6 inches. The cable may
suffer damage when the cable is wound or twisted with less than this radius.
Also, do not severely twist the cable, as this may cause damage to the molded section of the cable and
connector. If the towfish becomes snagged during towing and is rotated excessively, damage to the
connector may have resulted. Test the cable before using to prevent additional damage.

Edgetech 4125 Series Specifications

General

Brand	Edgetech
Model	4125 Series
Category	Sonar
Language	English