Installation manual

Simrad SD570 / Base version

851--160116 / B

Connecting a course gyro with serial line

output

The Sonar Control Unit can read the course gyro data (and/or the

speed log data) from a serial line with on of the following outputs

(tick off for the type which will be connected):

j RS232 Serial line

j RS422 Serial line

j 20mA current loop

The format of the serial line data is standard NMEA 0183, and the

telegram can contain both the course and speed data (refer to the

telegram format in the end of this chapter).

When connecting the 9-pin D- connector, note that each of the

three types of serial lines has different connection pins:

RS232: Serial line signal PORT B pin- 2

Signal reference PORT B pin-5

RS422: RS422+ PORT B pin-1

RS422$ PORT B pin-4

20mA current loop: CLI+ PORT B pin-6

CLI- PORT B pin-9

j Use a 9--pin D--connector, male type, for connecting the

serial line to port B on the Sonar Control Unit (this

connector is not included in the delivery). To make the

connections, refer to the pin connection list above, and

figure 21 which shows the pin location of the connector

seenfromthewiresolderingside.Thecablescreenshould

be connected to the connector housing.

j In order to read the data from the gyro, some DIL

switches and links on the printed circuit board in the

electronicdrawerunitbehindtheoperatorpanelmustbe

selected. Usethe following procedure to set the switches:

j Set the switch S101 at the rear panel on the Sonar

Control Unit to OFF position. For location of the switch,

refer to figure 13.

j Disconnect all connectionstotherear panelon theSonar

Control Unit.

j Usethe 3mmAllen key to unscrewthe fourscrewsonthe

frontoftheoperatorpanel,andpulltheelectronicdrawer

carefullyout.Notethetwocablestothedisplayonthetop

of the drawer unit.