User guide

22
Cisco TelePresence System Codec C90 Physical interface guide
D14644.03 Codec C90 Physical Interface Guide TC4.1, February 2011.
© 2010-2011 Cisco Systems, Inc. All rights reserved.
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COM port and Camera
Control port
COM port
1 x COM (RS-232) data port for codec control
and conguration 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 rst 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
Pin-out—Cameracable
Signal
name
RJ-45
pin
D-SUB
pin
+12V DC 1 Twisted
pair
4
GND 2 5
RX 3 Twisted
pair
2
TX 6 3
NC 4 Twisted
pair
1
NC 5 6
GND 7 Twisted
pair
5
+12V D C 8 4
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
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
RS232 9 pin D-SUB pin-out
External view of socket
Camera Control Port
COM port
1 5
6 9
Contents
Contact us
Introduction
The physical interface
Connecting to the codec
The physical interface