Vista QP16 series Manual de usuario descargar pdf (Pagina 5)

16 Channel DVRs

www.benchmarkmagazine.com

The unit delivers pentaplex performance,

and supports two-way audio with 16 inputs

and 1 output, all via phono connections. There

are also 16 alarm inputs with 1 alarm output,

handled via traditional push-fit connectors.

Other connectivity includes RS-232 and

RS485, as well as 10/100 LAN and two USB

ports, one fronted mounted and the other on

the rear panel.

The QP16 uses MPEG-4 compression.

Recorded resolution options are 720 x 576, 720

x 288 and 360 x 288. Record rate is 400ips at

the lowest resolution, 200ips for Half D1 and

100ips for D1. There are three quality settings.

The QP16 has an almost utilitarian fascia,

which is no bad thing. The left hand side

features a few general control buttons, while

the right hand side is home to playback

controls and ten (1 to 0) channel select buttons.

The largest element on the front panel is the

touch controller, which sits in the middle of the

unit. It’s not difficult to use, but neither is it the

easiest controller we’ve come across. In time,

you do get used to it!

The unit is supplied with a full manual, which

is good to see. It also comes with an infrared

remote control unit and a mouse.

One small point is that if a user is seeking a

DVR to sit on a desktop or in an office location,

the QP16 is noisy; it was the loudest of all the

units, and at times it can be quite irritating. The

fans have a constant drone that is very obvious!

It’ll be fine in a separate unmanned location.

The menu structure is relatively

straightforward, but you will need to reference

the manual when navigating around it for the

first time. While a number of manufacturers

have opted to move towards more business like

GUIs, the QP16 still has something of a comic

icon-based interface.

Functionality such as motion detection and

alarm handling are pretty simple, once you’ve

found your way around the menus. Our

preferred method was using the supplied

remote control, although during searches and

playback the stop button also seemed to

randomly open the DVD drive!

While the GUI might not be the best, it’s hard

to fault the image quality, and when all is said

and done, that’s why most installers will specify

a DVR. The video resolution can be set as CIF,

Half D1 or D1. The quality settings are Standard,

Best and Good. With D1 recording, the Best

quality delivers a clean image, with signs of

compression only noticeable in areas of

continuous tone. Dropping to Good does

introduce more noticeable compression

artefacts. When you move to Standard quality,

even at D1, the image is only good for very

general surveillance.

Reducing the resolution to CIF does introduce

more degradation, but by keeping out of the

Standard setting the image can be used for

general surveillance purposes.

Verdict

The Everfocus Paragon 264x4 is a very good

machine, and if we’d been sent a manual and a

power lead – and if the manual had decent

instructions about fitting the drives – we’d have

been happier. That aside, the GUI, whilst not

difficult to use, isn’t as intuitive as some of the

others. However, you can forgive it that because

of its performance.

Honeywell’s HRDP16D is a basic general

purpose DVR. When Benchmark established the

base specification for what the DVRs needed to

achieve, the unit was accepted as the spec

seemed to indicate that the unit would provide

a higher frame rate for high resolution images.

It doesn’t, and with a maximum rate of 50fps

for 4CIF images, it can’t compete in this

company. For this reason it receives a lower

rating. Against run-of-the-mill DVRs, it’s

certainly a nice unit.

Mitsubishi’s DX-TL5716E has been around for

a fair few years now, and whilst it’s still

capable, it does seem to have been left behind

by the pack! Given that in its day it was the

‘cooking’ version of the powerful DX-TL5000, it

was certainly once way out in front in terms of

performance. It has now been overtaken, and is

crying out for a performance boost.

The Samsung SRD-1670DP packs in a lot of

performance given its price, and it uses that

performance to deliver the type of image

quality, in real time at all resolutions, that you’d

expect from a higher end DVR. Compression is

very well implemented, and the GUI is simple

and intuitive. It’s hard to find fault with the unit.

Vista’s QP16 has some good points; it equally

has a few points that could be improved on.

The noisy fans rule it out for some applications,

and a reworked GUI would give it a more

updated feel. However, the performance suffers

if the image quality is reduced to its lowest

level, and that puts it behind a few others in the

test.

Vista QP16

Decent image quality at higher settings

GUI is a little bit clumsy

Best Buy –

Samsung SRD-

1670DP

The SRD-

1670DP

represents

where

mainstream DVRs will be

going in the near future. It

has power, high image

quality, a simple GUI, and

is built to a high quality. It

achieves all of this in a

rather under-stated way.

It is interesting that the

two best performers in the

test – Samsung and

Everfocus -were both

relatively new DVRs. In

recent times, processing

capabilities have moved

on, and the result is that

newer units are able to

fully exploit that additional

performance. The SRD-

1670DP, however,

squeezes a little bit more

out of it, and that makes it

the Best Buy!

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