AT&T DataPort PCX Modem Guia do Utilizador descarregar pdf (Página 38)

A-1

Issue 3 October 1995

Table A-1 describes each front panel LED on DataPort PCX

external modems.

Table A-1. LED Descriptions (1 of 2)

LED

Label

Description

TST Test Mode. When ON, the modem is executing a test.

CD Carrier Detect. When ON, the modem has established a

connection with a modem at the other end of the telephone

line. This LED follows the status of the CD signal, Pin 8 of the

EIA RS-232 interface. (This description assumes that the

&C command is configured for standard EIA RS-232

operation (&C1). Refer to the &C command in Appendix B for

more information.)

OH Off-Hook. When ON, the modem is connected to the

telephone line and a data or fax call is in progress.

RD Receive Data. When ON, the modem is sending data to your

computer. This LED follows the status of the RXD signal,

Pin 3 of the EIA RS-232 interface.

SD Send Data. When ON the computer is sending data to the

modem. This LED follows the status of the TXD signal, Pin 2

of the EIA RS-232 interface.

1 2 ... 33 34 35 36 37 38 39 40 41 42 43 ... 88 89

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AT&T DataPort PCX Modem Guia do Utilizador Página 38