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Cisco TelePresence PrecisionHD Camera PrecisionHD Camera User guide
D14640.09 PrecisionHD 1080p-720p Camera User Guide, June 2012.
© 2010-2012 Cisco Systems, Inc. All rights reserved.
www.cisco.com
Controlling cameras using the VISCA™ protocol
The information in this chapter applies to:
• PrecisionHD Camera 1080p12x
• PrecisionHD Camera 1080p4x
• PrecisionHD Camera 1080p4xS2
NOTE: Some of the VISCA™ commands do not apply to the
PrecisionHD 1080p4x/4xS2 cameras. You will nd these
commands marked with a * (star) throughout this section.
INFORMATON: The VISCA™ commands for PrecisionHD
720p camera is found in the MXP Reference User Guide
for System Integrators. Go to:
http://www.cisco.com/go/
telepresence/docs
The camera uses an RS-232 control interface that
resembles the Sony VISCA™ protocol. The VISCA protocol
(VIdeo System Control Architecture) is a Sony protocol for
synchronized control of multiple video peripherals.
VISCA™ is a trademark of Sony Corporation
RS–232 Parameters
At startup, the communication parameters for the RS–232
interface must be set to:
• 9600 bits per second
• 8 data bits
• No parity
• 1 stop bit
• No hardware ow control
• No software ow control
All the RS–232 parameters except speed are xed and not
user congurable. The speed may be changed by issuing the
Speed command dened on the following pages.
All control bytes are pure binary information, i.e. the control
bytes are not ASCII-encoded.
RS–232 Commands and inquiries
A list of all the available commands and inquiries together
with the result and comments are found in the table on the
following pages.
Contents
Appendices
Introduction
The physical interface
Connecting the camera
Video output formats
Daisy chaning
Appendices