ViewLock-II

Video Encryption System

Viewlock-II is an advanced video encryption system designed to protect law enforcement video surveillance links from interception. The system offers an excellent level of video security by employing dynamic line cut and rotate video scrambling combined with multiple encryption keys. Highly secure digital audio scrambling is also an option via the system’s Audiolock upgrade.

The Viewlock-II video encryption system is compatible with any analogue video link and, with its fast lock-in time and robust performance, is ideal for use with RF links - even in marginal reception conditions. Furthermore, with its small dimensions, rugged construction and ultra-low DC power requirement Viewlock-II is perfect for covert installations.

With these outstanding features, together with proven in-field reliability, Viewlock-II is now established as the leading video encryption system for the protection of covert video surveillance transmissions by the world’s law enforcement agencies. 

Video Scrambling

Viewlock-II randomly cuts and rotates each active picture line, offering a very high level of picture concealment and security whilst maintaining link compatibility. Viewlock-II even automatically configures itself for 525 line NTSC or 625 line PAL operation and is therefore compatible with almost any transmission system used throughout the world. 

Screen shot of scrambled picture Screen shot of scrambled picture
Screen shot of decoded picture Screen shot of decoded picture
Line cut and rotate video scrambling Line cut and rotate video scrambling

Optimised for wireless surveillance links

Viewlock-II has been optimised to operate with demanding transmission systems such as RF & microwave video links. It has a very fast "lock-in" time, excellent decoded picture quality and high tolerance to multipath and noise. Indeed, robust in-field performance is a major strength of the Viewlock-II video encryption system and its operation is virtually transparent to any link, resulting in little or no effect on range or performance.

Typical ViewLock Application     Typical ViewLock Application

Highly Secure Scrambling

Viewlock-II randomly cuts and rotates each active picture line, offering a very high level of picture concealment and security whilst maintaining link compatibility. Viewlock-II even automatically configures itself for 525 line NTSC or 625 line PAL operation and is therefore compatible with almost any analogue transmission system used throughout the world. 

Covert Surveillance Installation

Viewlock II’s rugged construction, small dimensions and low DC power requirement make the system ideal for covert installations. Furthermore, its wide operating temperature range and weatherproofing to IP65 specifications, means that permanent outdoor operation is not a problem.

On Screen Display OSD

The Viewlock-II video encryption system includes an on-screen-display as standard showing information about the status of the link. The OSD shows "Secure" when the link has been successfully encoded and decoded, and "Insecure" when the video has not been scrambled. To aid fault finding and installation Viewlock-II also displays additional messages such as "No Link", when there is no video at the input of the decoder, and "No Video" when the encoder’s input is absent. 

ViewLock-II Specifications

Mechanical Size127 x 60 x 23 mm.
Operating temperature range-10 to + 70 deg C.
Weight220g (approx).
DC power input6 to 32 V DC at <0.65 Watts eg <55 mA at 12 V).
EMC complianceEN5502 Class A & EN50082-1 FCC part 15B class A.
Video
Video encryption methodActive line cut and rotate.
Number of cut points256.
Video standardsPAL & NTSC 525 & 625 lines (auto switching).
Video input/outputBNC 1 Vpp 75R.
Digital sampling8 bits.
Signal to noise> 55 dB weighted (>60dB typ).
Differential gain< ± 4%.
Luminance non-linearity< ± 4%.
Differential phase< ± 5 deg.
Lock-in time< 0.25 sec (typical).

Product Codes

VL2B-5008ViewLock-II video scrambling system (encoder/decoder pair) with carry case and manual.
VL2B-5012ViewLock-II video scrambling ENCODER unit boxed.
VL2B-5013ViewLock-II video scrambling DECODER unit boxed.

Due to continual product development Ovation Systems reserve the right to change specifications without notice. E&OE.

Our Products

Features

  • Highly secure - line cut and rotate video encryption with user programmable encryption keys.
  • Very low DC power consumption - less than < 55 mA at 12 Volts DC.
  • Optimised for use with video surveillance links - very fast "lock-in" time, tolerant to noise and interference.
  • Ideal for covert installations - rugged and weatherproof miniature housings.
  • Advanced features and options -on-screen display of status, optional digital audio scrambling.