D14128.03—JULY 2009
37
Codec C90
System Integrator Guide
Contents
Introduction
Getting Started
Interfaces
About the API
xConfiguration
xCommand
xStatus
Cameras
Appendices
Contact us
Connecting to the codec,
cont...
Hardware & Cabling (RS-232)
The pin outs for the RS-232 are defined in the tables to the right.
Observe that the DTE (Data Terminal Equipment), could be a PC or
any other device capable of serial communication.
Cable.
A straight-through cable should be used between the
TANDBERG RS-232 port and the DTE. The lower table shows the
recommended cable-wiring scheme when connecting the TANDBERG
Codec C90 to a PC through RS-232.
DTR and RTS are ignored. DSR, CD, and CTS are always asserted,
while RI is not used.
Troubleshooting (RS-232)
If communication cannot be established between the PC/terminal and
the TANDBERG Codec data port, the following should be checked:
1.
Verify that the serial cable is a straight-through 9-pin to 9-pin
cable.
2.
Confirm that the configuration of the PC/terminal’s serial RS-232
port is identical to the configuration of the TANDBERG RS-232
port.
3.
Verify that the PC/terminal’s serial RS-232 port is working properly
by connecting it back-to-back to another PC/terminal and send
characters in both directions.
COM port (RS-232)
Pin
Signal name
Direction
1
Carrier detect, CD
From DCE
2
Receive data, RXD
From DCE
3
Transmit data, TXD
To DCE
4
Data terminal ready, DTR
From DCE
5
Signal GND
6
Data set ready, DSR
From DCE
7
Ready to send, RTS
To DCE
8
Clear to send, CTS
From DCE
9
Ring indicator, RI
From DCE
Cable wiring (RS-232) TANDBERG DCE <-> PC
TANDBERG DCE 9 pin
Direction
PC DTE, 9 pin
1 CD
—>
1 CD
2 RD
—>
2 RD
3 TD
<—
3 TD
4 DTR
<—
4 DTR
5 GND
<—>
5 GND
6 DSR
—>
6 DSR
7 RTS
<—
7 RTS
8 CTS
—>
8 CTS
9 RI
—>
9 RI
Contents
Introduction
Getting started
Interfaces
About the API
xConfiguration
xCommand
xStatus
Cameras
Appendices
Contact us
About the API
