ViewLock II PIR25 PIR100 TapeLock HindSight Portable
CCTV System
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ViewLock
Video Encryption System
> Line cut and rotate video scrambling
with user programmable encryption keys
> DC power consumption < 65 mA
at 12 Volts DC
> Optimised for use with video surveillance
links - fast "lock-in" time, tolerant
to noise & interference
> Rugged & weatherproof miniature
housings
> On screen display of status |
Microwave and cabled video surveillance links are insecure
and are open to the threat of interception. Viewlock safeguards
the operational integrity of such links, by scrambling
the video during transmission, making it impossible to
intercept and decrypt the surveyed scene. Viewlock II's
advanced digital processing, coupled with the use of multiple
encryption keys, offers the the very best in security.
Viewlock II builds on over 5 years experience with the
highly successful Viewlock I range of video encryption
systems. Viewlock II improves on all the best features
and functions of the original system such as fast lock-in
time, excellent picture quality, and in noise performance
whilst the size has been halved to a package of only 23
x 60 by 100 mm. Furthermore, current consumption has been
dramatically reduced and Viewlock II requires a mere 65
mA from a 12 Volt DC supply. Viewlock II is able to offer
such performance gains, at such low current, by incorporating
a dedicated chip (ASIC) to perform all the scrambling
functions. The use of an ASIC chip also improves security
and reliability as the system is highly integrated and
fewer components are required.
Viewlock II is now the worlds leading encryption system
for the protection of video transmissions by the police,
military and government security 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.
Optimised
for use with RF & microwave 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 system and its operation is
virtually transparent to any link, resulting in little
or no effect on range or performance.
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Typical
Viewlock Application |
Highly secure
Secure algorithms, seeded by an unreadable primary key,
are used to generate the cut and rotate sequences. Only
if the primary keys match will the decoder be able to
decrypt the received video. Security may be further enhanced
by the addition of a user down-loadable 32 byte secondary
key set which is used to randomise the cut sequences even
more, to an incredible 10 ^1,850 possibilities.
Covert 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
Viewlock II 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.
| Technical
Specification |
| Outline
Specification: |
Dimension |
127 x
60 x 23 mm |
| |
Operating temperature
range |
-10°C to + 70°C |
| |
Weight |
220g (approx) |
| |
DC power
input |
6
to 17 V DC at <0.8 Watts
(eg < 65 mA at 12 V) |
| |
EMC compliance |
EN5502
Class A & EN50082-1
FCC part 15B class A |
| |
|
|
| Video: |
Scrambling method |
Active line cut &
rotate |
| |
Number of cut points |
256 |
| |
Video standards |
PAL
& NTSC 525 & 625 lines
(auto switching) |
| |
Video input / output |
BNC 1 Vpp 75R |
| |
Digital sampling |
8 bits |
| |
Signal to noise |
> 55 dB weighted
(> 60dB typ) |
| |
Differential gain |
< + 5 % |
| |
Differential phase |
< + 5 deg |
| |
Lock-in
time |
< 0.25
sec (typical) |
| |
|
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* Product specification may be subjected
to change without prior notice
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