Vista QP04 series Manuel d'utilisateur télécharger pdf (Page 15)

HD 720p Cameras

www.benchmarkmagazine.com

which utilises the Samsung Wisenet processing

engine. The SNB-5000 delivers a HD720p image

in real-time, with a 16:9 format. The camera is a

day/night model and features an automatic IR

cut filter. Sensitivity is quoted as 0.3 lux in

colour mode, and 0.01 lux in monochrome mode.

Figures are for a 50IRE image.

The camera makes use of H.264, MPEG4 and

MJPEG compression. Frame rate is real-time for

HD720p resolution. Multiple streaming is

supported, with up to 10 profiles.

Alongside the RJ45 for network connection,

the camera features two-way audio, an alarm

input/output and power input. Power is 12V

DC/24V AC. Power over Ethernet is also

supported. The camera also includes an

SD/SDHC card slot. The SD option gives up to

2GB of storage, with SDHC delivering a more

usable 32GB.

The camera includes a BNC connector. This

simplifies set-up as the camera can be quickly

connected to a test monitor. It’s also a real

benefit when trying to adjust the lens.

This camera boasts a host of functions

including SSDR (Samsung’s dynamic range

feature), SSNR III (the noise reduction system),

BLC with highlight compensation, and

intelligent video analytics (object

appear/disappear, entry/exit and virtual

tripwire. The latter is licence-free, and so is

enabled as standard. The camera is supplied

with Samsung’s Net-i software package, which

allows licence-free video management and

archiving.

Samsung supplies a utility to configure the

camera; this is basic and runs without a need

for installation on the PC. Once the camera is

found and the address configured, you can then

The SNB-5000 uses the Samsung Wisenet

DSP, and this is very similar to the well-

established SV5 processing that is employed on

its high end composite CCTV cameras. As a

result, you do get a lot of CCTV functionality,

although some features are slightly simplified.

Image quality is high, with very good detail

and excellent colour accuracy. As the bandwidth

falls, so the image starts to show signs of

compression, but detail and colour fidelity are

preserved. It’s only below 2Mbps that

compression is obvious in certain parts of the

scene, and once below 1Mbps you can have the

debate as to whether a lower cost non-HD

camera would suffice.

Low light performance is good, and you can

push the Samsung camera further than some

others on the test. However, you need to

exercise caution. The SNB-5000 has a lot of

processing ability, and it’s all too easy to overdo

things and make the image worse. While

conventional wisdom is that when an image is

poor you turn things up to improve it, with the

SNB-5000 you’ll often find yourself turning the

settings down! Remember this and you’ll be

impressed with the potential on offer.

Verdict

The DS-2CD863PF-E from Hikvision is a good

quality camera, and is ideal for mainstream

applications. The camera is not supplied with

the free-of-charge client software, which needs

to be downloaded, and that’s a shame because

it does offer additional flexibility.

IQinVision’s IQM31NE-B5 will have limited

appeal to those who do not want to use power

over ethernet - for whatever reason - because it

does not support conventional power inputs.

That said, it’s a decent - if somewhat basic -

choice, but it does deliver a good image

quality.

The one-off quality fault on Siqura’s FD64

aside, its a good general purpose camera in

everyday lighting. If it has a weakness, it is low

light performance, and it needs to switch to

monochrome mode earlier.

Samsung’s SNB-5000 delivers a high level of

CCTV-biased functionality, licence free intelligent

video analytics, and high video quality. For many

installers and integrators that will be enough.

The V961D from Vicon delivers clean, crisp

and accurate images, and low light

performance is also good.

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