Satel SATELLINE-3AS Guia do Utilizador descarregar pdf (Página 81)

SATELLINE-3AS NMS / NMS Epic / NMS 869 / VHF

User Guide, Version 1.0

14.2

Wiring

14.2.1

RS-232 wiring - both Ports 1&2 connected (DATA and NMS in use)

A typical connection between a radio modem and the PC serial ports (RS-232) is depicted in the

schematic below. One of the ports serves as the DATA port while the other is for NMS.

SGND

9-PIN D-CONN.

SGND

25-PIN D-CONN.

SGND

RADIO MODEM

14,15

7, 8

DTR

+Vb

GND

Fuse

3AS: 630 mA slow

3AS Epic: 4 A slow

+Vb

GND

TD2

RD2 RD2

SGND

NOTE!

When installing the cables of the serial interface, the operating voltage of all devices must

be off (POWER OFF condition).

Due to the greater current consumption of SATELLINE-3AS-NMS Epic operating voltage

must be connected to pins 14 AND 15, and ground to pins 7 AND 8. Correct fuse rating is

in this case 4 A (SLOW FUSE).

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