Installation
Page 11 of 31
Doc No.: MAN01502, 27-02-01 SCA 300 Manual
2 INSTALLATION
2.1 Mounting
The SCA 300 should be mounted in the wheelhouse if possible. This will
result in shorter cable lengths and ease in the tuning procedure.
WARNING: ALTHOUGH RESISTANCE TO RADIO FREQUENCY (RF)
INTERFERENCE HAS BEEN INCORPORATED INTO THE SCA 300’s
DESIGN, DO NOT PLACE THE SCA 300 AND ITS CABLES IN CLOSE
PROXIMITY TO RF TRANSMITTING EQUIPMENT OR HIGH
CURRENT OR HIGH VOLTAGE DEVICES.
Refer to Figure 4 for space requirements and mounting information. Note
the clearances required. Mount the box so that the cover can be removed
and the printed circuit board can be seen and accessed.
2.2 General Instructions for Plug Assembly
Refer to the Plug Assembly manual (supplied separately) for assembly
directions of the cable plug ends.
CAUTION: Do not install the O-ring seals or heat-shrink the strain relief until the
system is tested and performs satisfactorily.
2.3 Cabling and Wiring
NOTE: Read section 2.2 before proceeding.
For ease of plug assembly, cable conductor insulation diameter must be
less than 1/8” (3mm).
Refer to the cabling diagram (see Fig. 1) and the wiring diagrams (see
Figures 7 to 11) for information on which cables and cable conductors
are used.
IMPORTANT: In some installations it will be necessary to be able to disconnect
the steering control system from its power source while retaining
rudder angle indication. The SCA 300 in combination with the
RFU 1300 operating in “stand alone” mode can accommodate
this without any wiring modifications (see section 1.3 and the
RFU manual).
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