The LiteLink® VLD-3002 provides alarm indication when there is a loss of video sync,
when there is an extended period of black (obstructed camera lens) or white
(intentional blinding camera video signals). The VLD-3002 is a dual
channel unit. For each channel there are: Signal, Black, & White level
Indicators; Adjustable trigger points for black and white alarm levels; and
a normally open relay contact that closes on an alarm condition.
The VLD-3001 is a single channel version of the VLD-3002. The VLD-1001 is a
low cost single channel unit which only detects presence video only (via
sync) and not
black/white levels. All units can be mounted in our 1U, 2U or 3U racks for multi-channel
monitoring. Additional alarm contacts and an audible alarm can be achieved
with an optional
ALM-1000.
Fiber Optic Communications Systems 
