5-3
SYMPTOM
PROBABLE CAUSE
CORRECTIVE ACTION
5 VDC from the preamplifier in
the tow vehicle is not present.
Measure voltage between TOWFISH PREAMP 5 VDC test point
and PREAMP COMMON test point on back of Deck Unit.
Voltage should be 5 VDC.If 5 VDC is not present, check tow cable
and spider mold in tow vehicle, repair or replace as needed.
If 5 VDC still not present, replace tow vehicle’s preamplifier.
Vertical black streaks are
present in the Sonar display.
One or more of the underwater
connectors are loose or have
corroded contacts.
Inspect and clean the connectors. Reconnect the connectors.
Extended use has caused a
conductor in the tow cable or
the cable harness in the tow
vehicle to break.
Check the continuity of the conductors in the tow cable and in
the cable harness.
There is white data dropout in the
Sonar display.
A connector is loose or
flooded.
Wiggle the tow cable connections and the connectors of the
cable harness in the tow vehicle while watching the Sonar
display for white streaks. If white streaks are present, refer to
“Inspecting and Cleaning the Underwater Connectors” on
page 4-2 and inspect and clean the connectors. Reconnect the
connectors, and if necessary, secure them using electrical tape
or locking sleeves. Possible spider assembly problem.
There are periodic streaks in the
Sonar display from AC noise.
The system is not properly
grounded.
Check the continuity between the GND connection on the back
of the Deck Unit to ship’s ground.
The return signals from the
hydrophone arrays are being
clipped.
Reduce the preamplifier gain or the transmit power, or both.
Noise is present in the Sonar
display.
Engine noise is coupling into the
sonar frequency band.
Isolate the engine noise.
Tow vehicle is in or near the
ship’s wake.
Tow the tow vehicle at a deeper depth and farther away from
ship.
The tow vehicle is not level
when being towed.
Level the tow vehicle by adjusting the tow point such that the
tow vehicle is level when moving through the water at 3 to 5
knots.
The tow vehicle is being towed
too fast.
Lower the speed of the tow vehicle.
Table 5-1: 3100-P Portable Topside Troubleshooting
5.2
Wiring and Connector Pin out Drawings
Included in the following pages are the 3100-P Sub-Bottom Profiling System diagrams for the 35-meter
cable, portable topside, and towfish.
Содержание Model 3100P Sub-bottom Sonar System
Страница 24: ......
Страница 29: ...2 5 Figure 2 4 Tiger Board Set SIBU aka Sonar Interface Board 0011637...
Страница 32: ...SECTION 2 SPECIFICATIONS 2 8 3100 P PORTABLE SUB BOTTOM 0004802_REV_F Figure 2 5 SB 216 Towfish Outline Drawing...
Страница 33: ...2 9 Figure 2 6 SB 424 Towfish Outline Drawing...
Страница 48: ...3 14 SECTION 3 SETUP AND ACTIVATION 3100 P PORTABLE SUB BOTTOM 0004802_REV_F Figure 3 11 Tap Test...
Страница 60: ...SECTION 5 TROUBLESHOOTING 5 4 Figure 5 1 35M Tow Cable Diagram 0002899...
Страница 61: ...5 5 Figure 5 2 3100 P Topside Interconnect 0004674...
Страница 62: ...SECTION 5 TROUBLESHOOTING 5 6 Figure 5 3 Wiring Diagram Spider Box SB 424 Tow Vehicle...
Страница 63: ...5 7 Figure 5 4 Wiring Diagram SB 424 Tow Vehicle...
Страница 64: ...SECTION 5 TROUBLESHOOTING 5 8 Figure 5 5 Wiring Diagram Spider Box SB 216S Tow Vehicle...
Страница 65: ...5 9 Figure 5 6 Wiring Diagram SB 216S Tow Vehicle...
