FARGO electronic Digital Audio Board 7KDAB - Manual (Page 25)

7KDAB, Version 2.0, 19-Aug-2007
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Vyex LLC, 2003-2007 20
Using the Serial Port
Hardware Interface
Connecting the DB-9 serial port connector to a PC type computer can be accomplished with a straight through cable.
The DB-9 connector pinout is as follows:
1. No Connection
2. Transmit Data from DAB
3. Received Data to DAB
4. Ready to send from PC
5. Ground
6. DTR from DAB
7. Connected to pin 8
8. Connected to pin 7
9. No Connection
When the DAB sees pin 4 go ready, it will start a new command line session. If a password has been set, the DAB will
prompt the user for a password. When used with a modem, this pin should be tied to the modem’s carrier detect signal.
Pin 6 will normally be true, but at the end of a session timeout, or as the result of too many incorrect password attempts,
this line will go false for two seconds and then return true. This can be used, with proper modem configuration, to
disconnect a dialup caller.
Modem Wiring:
DAB (DB9) Modem (DB25)
2
2
3 3
4 8
5 7
6 20
Baudrate
The serial port’s baud rate is determined by a setting in the CONFIG.INI file. Any baud rate up to 115200 can be specified
in the configuration file.
Password
The session password, if set in the CONFIG.INI file, must be entered correctly before access is given to the DAB’s
command line interface. Please note that this password is case sensitive.
Up to three attempts at entering the correct password are allowed before the DAB drops the DTR signal to disconnect the
caller.