Cisco TelePresence System Codec C90
Contents
COM port and Camera
Control port
COM port
1 x COM (RS-232) data port for codec control
and configuration through API commands.
Camera Control port
1 x Camera Control (RS-232) port for power
and camera control (pan, tilt, zoom) using the
VISCA™* protocol.
Main connector. The main camera is
connected to the Camera Control port.
Power. Pin No. 4 on the Camera Control port
provides 12 V DC / 1 A to the main camera.
If more than one camera is connected, only
the first camera is powered from the codec.
The additional cameras must be daisy chained
by using a serial cable, and each will need an
external power supply.
Additional cameras. For information about
additional cameras, see the PrecisionHD
Camera User Guide which is found on our
web site, go to:
http://www.cisco.com/go/
telepresence/docs
*VISCA™ is a trademark of Sony Corporation
RS232 9 pin D-SUB pin-out
External view of socket
1
5
6
9
D14644.03 Codec C90 Physical Interface Guide TC4.1, February 2011.
© 2010-2011 Cisco Systems, Inc. All rights reserved.
Introduction
Connecting to the codec
Pin-out—COM Port
Pin
Signal name
Direction
1
Carrier detect, CD
From DCE
2
Receive data, RXD
From DCE
3
Transmit data, TXD
To DCE
4
12 V / 1 A
To the main camera
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
The physical interface
The physical interface
COM port
Camera Control Port
Pin-out—VISCA™ camera control
RJ11, 8 pins shielded modular jack
Pin
Signal name
8
+12V (presence 2.8mA current
source when connected in daisy
chain)
7
GND
6
TXD (out)
5
NC (no connect)
4
NC (no connect)
3
RXD (in)
2
GND
1
+12V
22
Physical interface guide
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Pin-out—Camera cable
Signal
RJ-45
D-SUB
name
pin
pin
+12V DC
1
Twisted
4
pair
GND
2
5
RX
3
Twisted
2
pair
TX
6
3
NC
4
Twisted
1
pair
NC
5
6
GND
7
Twisted
5
pair
+12V DC
8
4
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