Wiring - Furuno Doppler Speedlog DS-50 Installation Manual

5.1 Remarks on Cabling
1. Cable between transducer and transceiver unit
This cable carries very weak signals having amplitude of less than 0.1 μV, which are easily
interfered by noise. There fore, dedicate steel conduit tubing exclusively for this cable. For
the conduit which runs vertically, line it with vibration absorbing material prevent cable
vibration.
Cable to use
Cable Name Z-6FVN-SX 3P+1P
Outer diameter 18.7 ± 0.5 mm
Weight 450 kg/km
Outer sheath Rubber
Armor None
2. Cables between transceiver unit and processor unit (via junction
box DS-360)
These cable carries echoes signal having amplitude of greater than 0.1 mV, which can be
interfered by noise from high power electrical power cables. Therefore, do not run these
cables through steel conduit tubing with the following cables:
Cable carrying more than a few kilowatts of power to fluctuating loads.
Cable carrying switching waves generated by thyristor, etc.
Transmission antenna cable of radio equipment.
Observe also the guidelines given for "3. Other cables."
Cable to use
Cable Name TTYCY-19S
Outer diameter 38.8 ± 1.6 mm
Weight 2050 kg/km
3. Other cables
Observe the guidelines which follow to prevent noise and interference
When cables run parallel with power cables, separate them 40 cm minimum.
For cables run into non-metallic conduit tubing or duct behind a bulkhead, use cable
with armor and no protective covering and ground it every 50 cm.
5.

WIRING

24