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Caution
You must configure the input supply voltage of the Power/VDSL Unit to match the ship’s
mains power. Failure to select the proper input voltage may damage the Power/VDSL Unit.
•
Power input
: 100/120/230/240VAC, 50/60Hz +/-10%(5AMP)
•
Power output
: 200VDC 1Amp maximum
Note
The Processor Unit and the Power/VDSL Unit must be connected to a clean AC power
source through a dedicated UPS unit.
Minimum third-wire infrastructure
requirements
The FM90 system provides fast update rates. To sustain the high update rates typical for
multibeam sonars, the third-wire infrastructure must be capable of supporting significantly
higher data rates than for single beam scanning sonars.
There are three major components to the third-wire infrastructure:
• The third-wire trawl cable connects the Trawl Unit to the ship.
• The third-wire deck cable connects the top-side system units.
• The third-wire slip ring connects the trawl cable and deck cable at the winch.
Third wire infrastructure requirements:
• You must have a working voltage rating of 250 VDC minimum.
• The loop resistance, for the entire link from the top side to the Trawl Unit, must be
less than 100 ohms.
• You must ensure electromagnetic compatibility of the FM90 installation with respect to
cables that are part of other systems used on board.
Third-wire trawl cable requirements:
The third-wire trawl cable you use should minimize power loss and signal attenuation.
The CB6000 armoured coax cable is widely used in the industry, satisfies the power and
attenuation requirements, and is recommended for the FM90 sonar system for all vessels
where the trawl cable exceeds 2000 m in length. For cables shorter than 2000 m, other cable
types with similar specifications to the CB6000 may be suitable, provided they include
galvanized steel wire armour.
Содержание FM90
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