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VLD-3002
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Video Loss Detector
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For For valid video present detection |
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The 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 units which only detects presence video only (via
sync) and not
black/white levels. Below is a typical application of the VLD-3002. |
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| Specifications* |
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Important Features |
| Compatibility |
NTSC, PAL |
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· DC to 30
MHz Bandwidth |
| Video Bandwidth (min) |
DC to 30 MHz (+0,-3cB) |
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· BNC Loop
through |
| Input/Output Level |
1 volt pp |
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· Low Cost |
| Input/Output Impedance |
75 ohms |
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· Alarm
Contacts |
| Signal/Noise Ratio |
85 dB minimum |
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· Single
model for stand
alone or
rack mount |
| Differential Gain |
0.1% maximum |
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Din Rail Mount Option |
| Differential Phase |
0.1º maximum |
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| Response Time |
3 seconds typical |
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| Black level alarm adjustment |
100mV to 700mV |
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| White level alarm adjustment |
100mV to 1V |
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| Remote Alarm Contacts |
Normally Open |
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Pricing (qty 1-10) |
| Alarm Contact Ratings |
0.5 A @ 125 VAC
1.0 A @ 24 VDC |
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VLD-1001 $145 USD
VLD-3001 $270
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| Indicators |
Power, Alarm |
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VLD-3002 $370 USD |
| Channel Indicators |
Signal, White, Black |
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| Power Requirements |
11-24 VAC/DC @150ma |
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| Physical Size |
5.0” x 3.0 x 1.0"
127mm x 76mm x 25.4mm |
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*Note all specifications are subject to change without notice
Copyright 2011
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Fiber Optic Communications Systems 