User Manual

3.9 Connecting External Equipment to Display Unit

The display unit has two channels of NMEA input. One is standard in power cable. The other is

necessary to connect optional parts (Junction box with OPTION cable).

OPTION connector is located at display’s rear panel for connecting external equipment such as a

GPS, LORAN, or gyro compass. You must have a Junction box with OPTION cable. (Refer to CHAPTER

8 (4) External interface.)

Note: SIN/COS and MOB signals cannot be used on Junction Box.

* Junction box with OPTION cable (Order No. RZ704A)

Fig.3-13 Connecting external equipment to display unit

3.10 Countermeasure for Electromagnetic Interference

RA53/54 radar provides shields in the units and the inter-unit connection cable. When the radar,

however, is closely installed to radio equipment such as VHF transceiver, UHF transceiver, etc., or the

radar and/or radio equipment are not sufficiently grounded to the hull or ship's earth, the radar may

happen to cause EMI trouble.

Followings are general procedures for reducing EMI due to radars. When installing radars, refer to

them, and also check the radio equipment EMI trouble with operating the radar and radio equipment.

OPTION cable

Junction box*

note

(RZ704A)

POWER cable

External NMEA equipment

(GPS,LORAN,etc.)

External NMEA equipment

(GPS,LORAN,etc.)

Green :NMEA-

Red :NMEA+

To power supply

Other radar,

slave monitor,

External buzzer,

Gyro I/F

Other radar,

slave monitor,

External buzzer,

Gyro I/F,

SIN/COS.

MOB(NMEA out)