Video Loss Detection Data Buffer 2010Dbvl - American Dynamics AD2052 Installation And Operating Instructions Manual

SYSTEM MODULES DESCRIPTION
Video Loss Detection Data Buffer Module - 2010DBVL
The Video Loss Detector Data Buffer Module provides the
same capabilities as the 2010DB Data Buffer Module, with one
significant addition. First, it distributes switched input video,
with no character information, to multiple bay systems. It also
filters incoming information from the DATA LINE to allow for
the passage of localized information.
The additional function of this module is to detect the presence
of a video signal for each camera input. Each module can
detect video loss for a maximum of 256 cameras. For a full
matrix switching system of 1024 cameras, four 2010DBVL
modules are required, one for each block of 256 cameras.
The 2010DBVL module must be placed in the matrix
switching bay that is connected to the highest numbered
monitor output, and this bay must contain Video Input
Modules. The 2010DBVL cannot be used in a switching bay
that does not include Video Input Modules.
Front Panel
The front panel of the 2010DBVL provides indicator LED's
that illuminate if a video or sync loss is detected, and indicate
the SYNC and VIDEO content of the video input signal being
monitored. See Figure 9 for location of these LED's.
ALARM
SYNC
VIDEO
LEVEL
H
M
L
2010DBVL Front Panel LED Indicators
indicates Video or Sync Loss
indicates Sync present
indicates High video content
indicated Medium video content
indicates Low video content
Figure 9
Rear Panels
The 2010DBVL rear panel has 15 video output BNC's for
connection to Video Output Modules, and one 8-pin, RJ45 RS-
232 connector for Video Loss Detection data output and Alarm
Contact output to an Alarm Interface Unit. Figures 9 through
15 show the various types of rear panels of the Video Loss
Detector Data Buffer module.
Icon Definition: The
video/interconnect symbol for connecting switched video
among the matrix switching bays.
Switched video inputs from cameras 1 to 256.
Switched video inputs from cameras 257 to 512.
Switched video inputs from cameras 513 to 768.
Switched video inputs from cameras 769 to 1024.
See Appendix Figure A22 for illustration of interconnection
from these modules to the Video Output Modules.
T
E
S
T
/
E
X
P
A
N
S
I
O
N
O
N
L
Y
Figure 10
2010DBVL-00
Rear Panel
6
icons on the rear panels are the
1
O
U
T
8
9
O
U
T
1
5
Figure 11
2010DBVL-01 Rear Panel
Camera Card Bay
(No Monitor Modules)