NorthStar 951X Installation Manual - page 68

SECTION THREE - Interfacing

Page 58

951/952 INSTALLATION MANUAL Revision B

Configuring the RS-232 port

The RS-232 port is used to interface to any of the following: 

•

an external DGPS dif:ferential receiver

•

an external device that accepts SC-104 differential corrections

•

a personal computer

Connecting to a differential receiver lets the unit receive differential cor-

rections through the RS-232 port. This function is useful if the 951/952 

isn’t equipped with an internal differential receiver, but you want to navi-

gate using differential corrections.

If the 951/952 features an internal differential receiver, you can use the 

RS-232 port to transmit its differential corrections to another device that 

accepts them.

If you want to download waypoints to a personal computer, or have your 

dealer or Northstar upgrade the 951/952 with new operating software, 

you can connect to a PC using the RS-232 port. The following sections 

describe the RS-232 port’s various settings.

Using SC-104 out

SC-104 OUT outputs differential corrections from the 951XD’s or 952XD’s 

internal differential receiver to an external device that accepts the stan-

dard SC-104 data stream. When using SC-104 OUT, be sure that the 

BAUD RATE setting also matches the baud rate requirements of the 

receiving device.

Using SC-104 in

SC-104 IN accepts differential corrections from any external source trans-

mitting the standard SC-104 data stream. Use this setting if the unit isn’t 

equipped with an internal DGPS beacon receiver and you want to receive 

differential corrections from an external source. When using SC-104 IN, 

Honk

All alarms

Set alarm audio field to ON

Set honk output field to ALL ALARMS

Exclamation point flashes on the 

ALARMS screen; the unit simultaneously 

emits an output sound for half a second, 

followed by silence for half a second.

Honk

Anchor watch 

Set anchor alarm field to ON

Set honk output field to ANCHOR ALM 

For 10 seconds, the exclamation point 

flashes on the ALARMS/ALARMS & 

BACKLIGHT screen and the alarm 

beeps (if alarm audio is on), then the 

honk sequence starts.

Table 12: Beep and honk settings for all alarms (continued)

Sound 

Type

Setting(s)

Description