Marmitek PC to TV SENDER Manuel d'utilisateur télécharger pdf (Page 3)

April 2011 What Satellite & Digital TV 95

WIRELESS HDMI VIDEO SENDERS

Ratings

PLUS

■ Quick and easy to set up

■ Attractive design

MINUS

■ Horrible compression artefacts

■ Severe judder and stuttering

with horizontal motion

■ Receiver outputs stereo only

■ No HDMI loopthrough

Build

★★★★★★★★★★

Setup

★★★★★★★★★★

Performance

★★★★★★★★★★

Features

★★★★★★★★★★

Value

★★★★★★★★★★

60%

With a name like Prestigio Emporio, this wireless

sender appears to be trying a little too hard to

impress – even its packaging is extravagant. But

there is substance behind the style.

Both transmitter and receiver have a pancaked Mac

Mini-style design that is rather attractive. Build quality is

good, although there is some creak in the plastic casings.

Given how slim the units are, there’s only room for a

single HDMI connection on each. Also supplied in the

box is an IR blaster and an HDMI lead.

Thanks to the paucity of connections, hooking up the

PWHD01 is simplicity itself. Once the transmission source

and receiving screen have been wired via HDMI, the units

can be powered up. A simple onscreen text display then

informs that the devices are ‘Linking’.

By way of conﬁ rmation, a few moments later a Sky

channel appeared on our second-ﬂ oor set. The IR blaster

enabled us to pull up the EPG, with little obvious delay. It

was as if a fully functioning Sky box was connected. In

terms of ease of use, the PWHD01 proved to be the best

system on test.

Prestigio says the Emporio can transmit 1080p HD

resolution video across 25m, with 720p HD video

reaching twice that.

It is the only wireless HDMI video sender in this group

to use Motion JPEG compression rather than an H.264

codec, but the results are not great. On received footage

there were clear mosquito noise artefacts around ﬁ ne

detail (not present on the source material). Even worse,

our Blu-ray test platter conﬁ rmed signiﬁ cant judder and

skipping during rapid horizontal movement.

This all added up to the worst video performance in

the group. As with the Eminent iTrio, the Prestigio

receiver outputs stereo only.

Prestigio Emporio PWHD01

■ www.maplin.co.uk ■ £250

Ratings

PLUS

■ Small, stylish design

■ Excellent video performance

■ Receiver supports DD5.1

bitstream output

MINUS

■ Units tend to run hot

■ No HDMI loopthrough on

transmitter

Build

★★★★★★★★★★

Setup

★★★★★★★★★★

Performance

★★★★★★★★★★

Features

★★★★★★★★★★

Value

★★★★★★★★★★

82%

When it comes to design, this diminutive duo

has got its groove on. We love the fashionable

swirly pattern on the casing, which makes a nice

change from regulation gloss black. Two iPod-style bases

are provided to stand the units vertically, which helps

cool what transpires to be hot-running electronics.

Connectivity is limited to a single HDMI v1.3 input/

output on the transmitter and receiver, along with a

power feed and IR blaster mini jack. Performance is very

good. The units boast a transmission distance of no more

than 30m, but we experienced no problems during our

tests. Image support extends up to 1080p. We didn’t

need it but if the transmitter and receiver units fail to

connect there is a booster button on both. These must

be pressed simultaneously and the two boxes then

re-sync. Picture quality is reduced as a result, though.

Ease of use is also good. Immediately after being

powered up, with the transmitter taking an HDMI input

from our Sky+HD box and the receiver unit connected to

a second-ﬂ oor TV, both automatically linked. Moments

later a Sky channel was delivered to our second set.

The Sky EPG could be navigated seamlessly, and

recordings played from the Planner. Both SD and HD TV

streamed to our second-ﬂ oor test room without judder

or stutter. HD signals appeared extremely clean.

For our second test, we fed our transmitter with the

HDMI output of a Sony Blu-ray player and routed the

HDMI from its sibling receiver into an AVR. Not only did

the 1080p image pour across with no visual impairment,

the Dolby Digital 5.1 bitstream from the disc came with

it, dutifully turned into full surround sound by our home

cinema amp. Performance using our motion resolution

Blu-ray disc was excellent. There were no compression

artefacts and motion scrolling is perfectly smooth.

Audio quality is also ﬁ ne with no low-level audio hiss

apparent in the transmission stream. It supports Dolby

Digital 5.1 bitstream and stereo PCM but could not

deliver multichannel PCM when a multichannel ﬁ lm

soundtrack was converted from bitstream to PCM before

transmission.

SAC HD Wireless Sender 1080p

■ www.sacelectronics.co.uk (code: AE7695) ■ £250

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Marmitek PC to TV SENDER Manuel d'utilisateur Page 3

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