Video Input Modules; Description - Honeywell VideoBloX User Manual

VIDEO INPUT MODULES

DESCRIPTION

Rev 1.0
The video input module brings 16 video signals into the VideoBloX chassis. Each of the
inputs may be routed to 1 or more of the 64 backplane channels. All input modules have
16 video inputs, but can be switched to 16, 32, or 64 (maximum) outputs. Older modules
have front panel termination switches and some have internal termination jumpers.
VideoBloX input modules are equipped with:
• Their own CPU, switching voltage regulator, and fuse.
• Older styles have front panel mounted termination switches
• Newer styles have an internal termination switch located on the front edge of the
PCB.
• Front panel accessible gain adjustment (0 to 6db) for each input. This is useful to
restore picture levels for long video runs. Typically a poor signal results in jumping
or tearing text. Adjusting this potentiometer can eliminate the jumping text. This
adjustment can also be useful when the outputs feed a DVR as DVRs are more
susceptible to low video levels.
• Internal jumper selectable high frequency compensation to restore lost high
frequency signals on long video runs.
• Video Loss detection. Allows triggering of a sequence based on video loss and / or
video restored.
• Limited protection against over-voltages, such as those induced by a nearby
lightning strike.
• The front panel LED illuminates for power and flicker off briefly when a valid
command is sent with the card's address.
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