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Hardware Installation & Configuration
Connector Maintenance Guidelines
Mating surfaces should be lubricated with 3M Silicone Spray or equivalent, DO NOT
GREASE. Connectors must be lubricated on a regular basis. Lubricate O-rings with Dow
Corning #111 Valve Lubricant or equivalent. O-rings can be seriously degraded if exposed to
direct sunlight or high ozone levels for extended periods of time. Clean plugs and receptacles
with soap and fresh water.
Ground Fault Monitoring
The power supply within the Gemini includes an electrically isolated DC-DC converter front-
end. There is a small capacitive connection between the isolated ground and the sonar
chassis which should not noticeably affect any impressed current ground fault indicator (GFI)
equipment.
Power
3.3. Sonar Head Pin-Out (Impulse Titan Connector)
Document: 0685-SOM-00001, Issue: 12
Caution
Ensure that o-rings have been fitted correctly to cables and blanking caps before
use. O-rings should be inspected and replaced as part of a regular maintenance
programme. Frequency will depend on usage.
When attaching a connector make sure that both connector and socket are
completely dry. Any water trapped in the connection could result in an electrical
short.
If the Gemini has two ports then the unused connector must have a blanking cap
fitted prior to immersing in water. Failure to do this will cause permanent damage.
If using alcohol or IPA to clean out the connector take care that it does not come
into contact with any other part of the sonar. If an O-ring is present it should be
first removed and discarded and the new O-ring only inserted after the IPA has
evaporated.
Caution
Never try to make the Gemini work down a long cable by increasing the PSU
output voltage above 75V DC.
Warning
The Gemini PSU that is supplied with the Gemini system is intended for INDOOR
USE ONLY and should not be placed in a position where it could get wet.
Note
When fitted with the Impulse Titan style connector the VDSL and Ethernet are
on separate ports but cannot be operated at the same time. Whichever port is
not connected can be connected to RS232/TTL auxiliary devices.
16
Gemini Imaging Sonar
© Tritech International Ltd.
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