Vaddio WallVIEW HD-22 and HD-30 DVI-HDMI User Manual
Page 13
WallVIEW HD-22 and HD-30 SR Systems
WallVIEW HD-22 and HD-30 DVI/HDMI SR Cameras Systems - Document Number 342-0644 Rev A
Page 13 of 24
D
AISY
C
HAIN
C
ONFIGURATIONS
In some cases, daisy chain control situations just can’t be avoided. Because of this, Vaddio added “Daisy Chain
Control Emulation” or DCCE™ to the Quick-Connect DVI/HDMI SR Interface in order to use the ClearVIEW or
PowerVIEW series cameras daisy chain control situations. Hardware codecs (Cisco & Polycom) that control
cameras using a daisy chain control topology are prime examples of where DCCE can be used.
1) For daisy chain control, first complete steps above, since all the cabling between the camera and the Quick-
Connect DVI/HDMI Interface is the same.
2) Instead of running a control cable from the 1
st
camera to the 2
nd
camera to form a daisy chain, run a Cat-5e
patch cable from the 1
st
Quick-Connect DVI/HDMI Interface’s RS-232 CONTROL - DAISY CHAIN RJ-45 jack,
to the 2
nd
Quick-Connect DVI-HDMI SR Interface’s RS-232 CONTROL INPUT RJ-45 jack.
3) Within the modified VISCA® protocol that the codec and the ClearVIEW and PowerVIEW cameras use, the
1
st
in the chain will set up as Camera #1, the second will set up as Camera #2 in the chain, allowing the
controller or hardware codec’s IR remote (using the IR Forwarding Feature) to select which camera it will
switch to and which to control.
4) In the case of Cisco codecs, use the IR Modulated output of the Quick-Connect and a Xantech IR emitter
(282D or 283D) and attach the emitter to the front panel of the codec (in front of the IR receiver).
5) Polycom codecs with IR receivers can connect the IR feed-through the same way as the Cisco, but do not
use daisy chain control. Several Polycom codecs can also be connected directly with the non-modulated
signal to the codec’s IR signal input port.
Basic Daisy Chain Connectivity:
RS-232 from Codec
Single Control Port
Daisy Chain Port Out
RS-232
To
Camera #2
RS-232
To
Camera #1
RS-232 Control IN
RS-232