Furuno FAR 3220, Installation Manual

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2. WIRING
2-14
2.3 Antenna Unit (X-band, TR-DOWN)
2.3.1 How to fabricate the cables
Three cables are connected to the antenna unit: the serial cable from the transceiver
unit, waveguide (FAR-3220W-BB/3320W) or microwave coaxial cable (FAR-
3230SW-BB/3330SW), and power cable for the de-icer (option).
TTYCYSLA-10 (for serial cable)
Clamp the armor with the cable clamp.
DPYCY-1.5 (for the optional de-icer)
• Before beginning any work on the Antenna Unit, turn off the breaker for the de-icer
at the mains switchboard. (Turning off the display unit has no effect.)
• The de-icer activates when the temperature becomes 0 °C, and shuts down when
the temperature reaches 5 °C.
Clamp the armor with the cable clamp.
Flexible waveguide
The connector at the antenna side is preattached to the flexible waveguide. The bend-
ing radius shown below must be observed to prevent damage to the waveguide.
E-bend: 200 mm, H-bend: 400 mm
Crimp-on lug
6
6
490 490
40 40
5 5
Outer sheath Armor Inner sheath
Pass the heat shrink tubing (local supply)
onto the drain wire.
Drain wire Drain wire
Vinyl tape
(unit: mm)
Crimp-on lug
(FV2-M4)
6
945 945
35 35
10 10
Vinyl tape
Spiral tubing
(unit: mm)
Outer sheath Armor Inner sheath