Wall to wall coverage
So how easy is the EM7100 system to set up and what’s the quality like? To find out, I ran three location tests and used both a Blu-ray player and a Sky+ set top box as sources – typically the two most likely types of kit you’d want to wirelessly connect.
Rear connections support IR transmitter flashers
Eminent quotes a range of up to 30m for the system, which transpires to be a little optimistic. My first location test was between two adjoining rooms, at a distance of around 5m. The units automatically located each and immediately bridged the AV divide. I then moved the receiver to a second floor, in rooms approx 9m and 20m from the Transmitter. In both instances, the two units failed to lock. It seems the brickwork in my 1930s dwelling was just too much to negotiate.
To access the integrity of the wireless signal, the iTrio HDMI Receiver was connected directly to an AV amp. This would immediately identify if it was able to deliver bitstream multichannel sound. With the transmitter connected to a Blu-ray source, a variety of test patterns were played to highlight resolution and compression artefacts created during the H.264 encode/decode process.
Credit card remote
Performance was a mixed bag. Certainly compared to the RF-based video senders of yore, the quality of transmitted sound and vision is tremendous. There’s no ghosting or excessive noise and colour fidelity is good; however, I did notice motion judder which may irritate on anything which isn’t casual viewing. This was more evident on the test patterns coming from the BD player than programming from the satellite box.
Next page: Sonic senders
hdmi swap out?
You swapped a HDMI 1.4 for a 1.3 unit and saw no diff? What did you expect?
Someone needs to read up on the HDMI spec. 1.4 means it's listed on a web site, that's all!
The biggest problem with AV senders is the infra-red side.
Most don't support IRDA which SKY and VM boxes use.
Some of the cheaper av boxes use 2.4GHz and the number of people who can't figure out how to change their wi-fi router box channel so the av box doesn't clash is a great many.
Maplin sells many types of AV senders. But only 2 work with SKY+ & VM boxes 100% because of the IRDA issues.
No way either
As above, plus where's the HDMI pass through on the sender?
Just about to say
I don't think 5GHz penetrates bricks very well - my 5GHz network only has a range of about 8m with nowt but a stud wall in the way (WNDR3700 for reference purposes). High speed across the room is about all I'd trust it for.
£399 to go 5 metres?
Whats the point? You could rent a masonry drill for around £50, put some nice little holes through the wall, and actually have decent quality video and audio.
Signals sent over HDMI just aren't made to be sent over anything other than HDMI - which supports a bandwidth of between 4-8 Gbps for 1080p video + audio. Re-encoding that to be sent over wifi (probable bandwidth: 50 Mbps), in real time, with no coding hints, will lead to worse artifacts than you get on your average illicit DVD (you wanna buy DVD?)
total fail if it can't send the digital audio