Operating instructions

Digital Telephone Hybrid
SERIAL PORT HARDWARE AND SOFTWARE
Serial Port Hardware Connection
The serial port on the TH3 is a minimal RS-232 implementation. The figure shows the wiring diagram to accommo-
date interconnection with either a 9- or a 25-pin serial port on a PC or other serial device.
LecNet Device to PC
LecNet Device to AMX or Crestron
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
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
S
R
3.5MM
9 Pin Female
T
Stereo Plug D-Subminiature
N/C
1
Tip
LecNet Device Transmit
RXD
2
Ring
LecNet Device Receive
TXD
3
AMX
Sleeve
Gnd
N/C
4
or
Gnd
5
LecNet Port
Crestron
N/C
6
Port
N/C
7
N/C
8
N/C
9
AMX Programming Notes
If you are using an AMX system to control your LecNet
equipment, you’ll want to purchase the Lectrosonics
PT3 Protocol Translator. The PT3 connects between
the AMX bus and any LecNet equipment. With the
PT3, the LecNet equipment looks just like native AMX
equipment. The PT3 is the fastest and most produc-
tive way to control LecNet devices with an AMX
system.
Rio Rancho, NM – USA
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