MTX-IND-V2 Industrial Featured GSM-GPRS terminal modem http://www.matrix.es
MTX-IND-V2 User Manual V.1.1
Page. 24
Subject to change without prior notice
ASC1 RS232
The ASC1 interface is available as a 2-wire unbalanced, asynchronous modem interface
ASC1 conforming to ITU-T V.24 protocol DCE signaling.
Pin Name
Direction
Function
42 GND
-
Ground
43
TX
I
VILmax = 0.6V
VIHmin = 2.4V
VImax = ±25V
Transmitted data
44
RX
O
Min ±5V
Received data
45
CTS
O
Min ±5V
Clear to send
46 RTS
I
VILmax = 0.6V
VIHmin = 2.4V
VImax = ±25V
Request to send
RS232 Features
• It includes the data lines TD1 and RD1 and the status lines RTS1 and CTS1. It only supports XON/XOFF
software flow control.
• On ASC1 no RING line is available. The indication of URCs on the second interface depends on the
settings made with the AT^SCFG command.
• Configured for 8 data bits, no parity and 1 or 2 stop bits.
• ASC1 can be operated at fixed bit rates from 300 bps to 460800 bps. Autobauding is not supported on
ASC1. By default it is configured for 115200 bps, 8 bits, no parity and 1 stop bit.
