Raymarine ST50 plus Specifications download pdf (Page 21)

ST50 PLUS RADAR Operation and installation Handbook

Should the power connections be accidently reversed, protective

in-

line fuse F401(3.15A) will blow. Make sure that the input power leads

are connected for correct polarity with a VOM. Replace the fuse.

Grounding the Radar System

It is important for proper operation that an effective RF ground be

connected to the radar system. You may elect to ground the radar by

connection of a 10 or 12 gauge wire to the ground on the rear of the

display to be connected to the nearest ground point of the ship’s RF

ground system.

2.4.2 External System Interface

l-l

Fig. 2-12 Display Rear Chassis

Section 2. Installation

The ST50 radar can receive various input signals from Navaids, Flux

Sensors, Raychart Units, and Seatalk Data networks. Thk inputs from

Seatalk, the flux sensor, and Navaids will be digital data conforming to

the NMEA 0183, or Seatalk formats to drive various radar features

such as Waypoint Mode.

If more than one data type is present at the radar inputs (for example;

Flux Sensor and NMEA and Seatalk) a system priority has been

established in the radar’s software to respond to the inputs in driving

the features.

The assigned priorities are set in this manner:

HEADING:

1. Flux Sensor (NMEA 0183 “HDM, HDT, HSC”)

2. Seatalk Data (Heading via Autopilot compass)

3. Navaid Data

(NMEA

0183 “RMC, RMA VTG”)

POSITION: 1. Seatalk Data

2. Navaid Data

(NMEA

0183 “RMC, RMA, GLL, GTD”)

SPEED:

1. Navaid Data (NMEA 0183 “RMC, RMA, VTG,

VHW”)

WAYPOINT: 1. Seatalk Data

2. Navaid Data

(NMEA

0183 “RMB, BWC”)

SEATALK:

Seatalk Data only

2.5.2.1 Connection with External Navaids

Navaid data is the primary source

for position, speed, and waypoint

bearing and rangeinputinformation

to the radar. Check the list above

and verify that the Navaid that will

be used to supply data input to the

radar contains the required

sentencesinilsNMEA0183output.

The Navaid input should be

connected at the NMEA connector

J401, Pin 3 (DATA

and pin 4

h-u7-n

\YnIn-,.

POWER/NMEA CHASSIS

CONNECTOR (J401)

View from the rear the display.

(1>

I’UWtK

UC li?V + (KtU)

@ POWER DC 12V

(BLKI

@ NAV DATA IN +

(YEL)

@ NAV DATA IN

(GRN)

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Raymarine ST50 plus Specifications Page 21

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