Professional Video Distribution Switch
Crestron
CNX-PVID8x4
14
•
Professional Video Distribution Switch: CNX-PVID8x4
Operations Guide - DOC. 8166A
Hardware Configurations
NOTE:
The hardware configurations described in the following sections only apply
to systems where the CNX-PVID8x4 connects to Crestron Room Solution Boxes.
The Crestron AppBuilder can generate a program that fits into one of these
configurations.
The CNX-PVID8x4 is constructed with four crosspoint boards; each implements a
16x8x1 matrix. The physical boards are labeled on the back of the unit as "levels" 1,
2, 3, and 4 from bottom to top. Component sources connect to levels 1 through 3 per
input (connect Y to level 1, P
b
to level 2, and P
r
to level 3). S-video sources use
levels 1 and 2 per input (connect Y to level 1 and C to level 2). Composite sources
should connect to level 1 only (including level 3 extensions of level 1when boards 1
and 3 are connected via the cable assembly). Digital audio sources connect to level 4.
Refer to the table after this paragraph for a tabulation of the relationship between
input levels and audio/video formats.
Relationship of Audio and Video Formats to Input Levels
\
VIDEO COMPONENT
S-VIDEO
COMPOSITE DIGITAL AUDIO
\ FORMAT (connects to (connects to (connects to
(connects to
LEVEL \
three levels)
two levels)
one level*)
one level)
4
not connected
not connected
not connected
digital audio
3
P
r
not connected
not connected*
not connected
2
P
b
C
not connected
not connected
1
Y
Y
COMP
not connected
* Composite sources can physically connect to level 3 when boards 1 & 3 are connected via the cable assembly.
Depending on how the internal boards are cabled/jumpered, the unit can be used in
different configurations (each is discussed in the following subsections). Refer to the
following flowchart to determine which configuration to use (based on the source
types in the system).
NOTE:
Crestron recommends the out-of-the-box configuration, because it allows
for the distribution of a large number of sources with the greatest flexibility and there
is no need to open the unit. The other configurations permit a greater number of
sources, but are not as flexible. The other configurations also require cabling of
boards and possibly the removal of jumpers.
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