Wavecom GR64 UART Sleep Protocols Manuel de service télécharger pdf (Page 17)

GTR64 http://www.matrix.es/GTR64

3.6 RS232 Serial Port

he modem supports a standard RS232 serial interface (EIA/TIA 574) via its 9 pin Sub-D connector,

own below. In line with serial communication terminology the GTR64 serial modem should be

nsidered as the

data circuit-terminating equipment

(DCE) and the external application or computer as

data terminating equipment

(DTE).

he electrical charact low:

T eristics of the serial port signals are shown be

Pin Signal Dir Voltage

levels

Description

1 DCD O

> +4V

< –4V

Data carrier detect

2 RD O

> +4V

< –4V

Received data

3 TD I

> 2V

< 0.8V

Transmitted data

4 DTR I

> 2V

< 0.8V

Data terminal ready

5 GND - 0V Ground connection

6 DSR O

> +4V

< –4V

Data set ready

7 RTS I

< 0.8V

Request to send

8 CTS O

> +4V

< –4V

Clear to send

9 RI O

> +4V

< –4V

Ring indicator

GTR64 Integrators Manual V.1.2 Pag. 17

Preliminary. Subject to change without prior notice

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Wavecom GR64 UART Sleep Protocols Manuel de service Page 17

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