Chamberlain Sentex INFINITY Installation Instructions Manual page 18

DB9S Connections
PIN NUMBER ON DB9S
2 ("receive data")
5 ("signal ground")
3 ("transmit data")
NOTE: Place one jumper between pins 4 and 6 and another
between pins 7 and 8. Place a jumper between pin 1 (CTS)
and 5 (RTS).
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
(refer to your 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".
Figure 17
HOOKING UP A PRINTER
Connect standard PC printers to the Infinity via RS-232 serial
interface as follows:
• 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).
• 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.
TERMINAL ON BOARD TB 2
RS-232 out (OUT)
Ground
RS-232 in (IN)
RTS
OUT
GND
IN
CTS
RTS
OUT
GND
IN
CTS
Figure 16
Jumper:
Pins 7 to 8
RS-232 Connector
(DB9 Connection)
Pin #5
RS-232 PORT CONNECTION
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 Baud Rate for RS-232
Communication, page 13) 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.
Infinity Multi-Link Unit
GND
IN
RTS
CTS
OUT
GRD
IN
RTS
Dual Short-Haul
• 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
Chamberlain, and come with a DB25 (25-pin data connector)
and cabling.
18
TB2
Pin #2
GND
IN
RTS
GND
Pin #3 IN
RTS
CTS
OUT
Jumper
GRD
IN
CTS to RTS
RTS
Infinity Processor Board
GND
IN
RTS
CTS
OUT
GRD
IN
RTS
Infinity Multi-Link Unit
M d