Hooking Up A Printer; Figure 13: Pc/Terminal Connected To First Infinity In A Chain Via Stand Alone Modem - Chamberlain SENTEX Infinity Series Installation Instructions Manual

If The Computer or Terminal Is 30 Or More Feet Away:
1. Connect the terminal's or computer's modem to the first unit in the chain.
2. If you are using a terminal or a computer with an external modem, connect the modem to the
terminal or computer (see terminal, computer and/or modem instructions).
3. Connect the modem to the first Infinity in the chain using 2 conductor, 16 to 24 AWG
unshielded telephone wire.
4. Plug one end of the wire into the terminal or computer modem plug marked "LINE".
5. Connect the other wire end to "LINE 1" on the modem in the first Infinity unit in the chain.
6. The terminal or computer must be running at the same baud rate as the Infinity (see Section D,
above) and must be set to full duplex communications with a word protocol of 8 data bits, no
parity bits, and 1 stop bit (8-none-1). Consult your terminal's manual to to set this protocol.
Connections for the video terminal or computer are shown in Figure 13:

Figure 13: PC/Terminal Connected to First Infinity in a Chain Via Stand Alone Modem

G. HOOKING UP A PRINTER
Connect standard PC printers to the Infinity via RS-232 serial interface as follows:
1. On the last Infinity unit in the chain, connect a serial printer cable no longer than 30 feet to RS-
232 Port 2 on the main processor board. Connect a jumper from pin 1 (CTS) to pin 2 (RTS).
2. You can connect your own serial printer to RS-232 Port 2 of the last unit in the chain using a 3
conductor, 18 AWG shielded cable and the appropriate DB-type connector.
NOTES:
Printers must be connected to the last Infinity unit in the chain.
Run printer wires in their own metal conduit to reduce interference and electrical noise.
Serial printers must have the same baud rate as the Infinity, and must be set to FDX (full
duplex), 8 data bits, no parity bits, and 1 stop bit (8-N-1). Refer to your printer manual.
Parallel printers may be connected to the "AUX" or printer port of a PC or terminal with a
standard Centronics parallel printer cable.
Okidata 184 Turbo RS-232 serial printers are available from Sentex, and come with a DB25
(25-pin data connector) and cabling.
Page 18 of 31 Doc 6001565 Rev C