AVE Video Serial Synchronous ATM Interface VSSI-PRO Manual do Utilizador Página 42

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Installation and User Manual ADPRO FastTx by Xtralis
30 Doc 11949_06
3.2.2 COMMS 2
COMMS 2 is used to connect to modems and terminal adaptors to support PSTN and ISDN links
at data rates up to 230 kbps. COMMS 2 can also be used to access the ADPRO FastTx setup
menu and to upgrade the software when connected to a PC or laptop computer via a null-modem
cable link. The 9-pin D connector pins are shown below.
Table 3: Comm Port 2 Connection
3.2.3 Connecting to a Modem or TA
Communication devices with a V.24 port are connected to the ADPRO FastTx using the modem
cable supplied with the modem or terminal adaptor. Either Comms 1 or Comms 2 may be used
and the ADPRO FastTx can be set up with two communications devices, allowing simultaneous
connections and / or a back-up communications path.
Figure 33: Modem Connection
Name Pin Direction Description
DCD 1 | Carrier Detect
RXD 2 | Receive Data
TXD 3 O Transmit Data
DTR 4 O Data Terminal Ready
GND 5 - Ground
DSR 6 | Data Set Ready
RTS 7 O Request to Send
CTS 8 | Clear to Send
RI 9 | Ring Indicator
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