Instruction Manual

SERIAL CABLE WIRING DIAGRAMS
The serial port on the LecNet device is a minimal RS-232 implementation. The figure shows the wiring diagram to
accommodate interconnection with either a 9 or a 25 pin serial port on a PC or other serial device.
LecNet Device to PC
S
R
3.5MM
9 or 25 Pin Female
T
Stereo Plug D-Subminiature
Wiring Diagram, 9 Pin D-Sub
1
2
3
Host
4
Serial
5
Port
6
(PC)
7
8
9
Wiring Diagram, 25 Pin D-Sub
LecNet Port
LecNet Device Transmit
Tip
LecNet Device Receive
Gnd
Sleeve
TX
Ring
RX
Sig Gnd
Chassis Gnd
RTS
CTS
3
2
7
Host
1
Serial
4
Port
5
(PC)
DSR
6
DTR
20
LecNet Port
LecNet Device Transmit
LecNet Device Receive
Gnd
Tip
Ring
Sleeve
N/C
N/C
CD
RX
TX
Gnd
RTS
CTS
RI
DTR
DSR
LecNet Device to AMX or Crestron
S
R
3.5MM
9 Pin Female
T
Stereo Plug D-Subminiature
Tip
Ring
Sleeve
N/C
1
LecNet Device Transmit
RXD
2
LecNet Device Receive
TXD
3
AMX
Gnd
N/C
4
or
5
Gnd
LecNet Port
Crestron
N/C
6
Port
N/C
7
N/C
8
N/C
9
AMX Programming Notes
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

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