Marmitek GigaView 821

Hang-on-the-wall HD

Marmitek’s Gigaview 821 packs 3D compatibility into its discreet wall-mountable body

This second generation wireless HDMI sender, from Euro-specialists Marmitek, is suitably light and small. The main transmitter is a diminutive tabletop design finished in gloss black, with two HDMI inputs and one output; this HDMI loopthrough simplifies system hook-up, and enables you to lace up your kit with the wireless blaster positioned en route. The unit also sports a mini-jack for the supplied IR repeater, allowing command codes to be blasted to any connected source. Handy.

The receiver unit is half the size of its parent, with a single HDMI output. The package includes a short HDMI cable.

Plug and play

The Gigaview 821 is another plug and play device. When powered up, the transmitter immediately begins to search for its receiving partner. When that is powered up, the two take only a few seconds to pair. Their success is evidenced by the flashing blue LEDs on each which lock in tandem.

The units need to be further than 2m apart and no more than 12m around the house to function correctly. If you using a line-of-sight connection, the system will throw a signal the best part of 25m according to the manufacturer. A small remote control allows you to select which of the connected HDMI sources you require.

The receiver box can be wall mounted, perhaps behind the TV, thanks to a simple hook-and-eye moulding on the base. With a little imagination, you could probably also hang it from one of VESA holes on the rear of a TV. It’s certainly light and small enough.

The Gigaview 821’s video performance is outstanding. Images are delivered at Full HD 1080p resolution, with support for 1080p24 sources. It can also handle PC resolutions up to 1,600 x 1,200. Transmissions are uncompressed, and transmitted in the 5.1-5.6 GHz band. We squeezed a variety of test footage through the system and then settled back to watch Hellboy 2 via our wireless link. At no point did Ron Perlman and his B.P.R.D chums look as though they were going to forget their lines – playback was crisp and smooth. There’s no discernible time lag between the two units – the specification lists latency at less than 1ms. This means you could use the system as a multi-room solution, without worrying unduly about content being out of sync between locations. The system is also compatible with 3D sources, being HDMI v1.4a enabled. Hellboy gave way to Disney’s Tangled, and we were soon wrapped in wireless stereoscopy. The receiving TV recognised that it was getting a 3D signal immediately, and doubled-up its imagery accordingly.

Audio caveats

The Gigaview 821 also does a fine job with audio. Its output is clean and free of hiss; it can also transmit a bitstream output, with caveats. With the receiver connected to an AVR, a bitstream output was detected – although what left the player as DTS-HD Master Audio was received and decoded as DTS core; the lossless surround info predictably went AWOL. The same applies to Dolby TrueHD, which arrived as standard DD5.1. The good news is that apart from that, both were decoded without anomalies. Standard DVD playback was uncompromised. Better results can be had by getting your Blu-ray player to convert multichannel soundtracks to linear PCM. This can then be sent to the receiver, which accepts the multichannel mix with gratitude. Of course, Sky viewers will not be so lucky – there’s no optical input into the transmitter. Overall, the Gigaview 821 can be considered an extremely accomplished HDMI sender, one which doesn’t falter when it comes to AV quality or functionality

Final standings

When video recorders were king, video senders were clunky, barely functional necessities. Back then, we didn’t have wired networks to stream content and domestic Wi-Fi was a far-off science-fiction fantasy. The only way to view timeshifted highlights was to get an RF aerial distributions system installed, purchase an extremely long composite video cable, or take pot luck with a RF sender typically prone to ghosting. Thankfully, those days are long gone. Today’s wireless video sender solutions are immeasurably better.

The £400 iTrio from Eminent reviewed here is effectively a bridge with this past era. Offering legacy analogue support via Scart and component, it’s a unique proposition in this market. For some this will help compensate for its rather lacklustre performance. Of all the I extenders tested, it’s video performance was comfortably the worst, and it turns its nose up at multichannel audio. Couple that with its relatively high price tag and you’ll understand why it brings up the rear in our rankings.

Budget option

The ZyXEL WHD6215 Aerobeam wireless HDMI kit is an entirely different kettle of fish. It’s the cheapest sender here and offers terrific performance, is compliant with 3D content and sports a very welcome quartet of HDMI inputs. But this smartly-styled package does have one fundamental limitation, in that you can only beam locally due to its employment of the WiHD standard. This makes the ZyXEL WHD6215 Aerobeam a fine replacement for HDMI – when you’re unable to gouge out a wall to run cable between a Blu-ray player and a projector, for example – but it’s less helpful when you want to beam Sky One to your bedroom.

The somewhat more mundane-looking Antiference HDMIWS is more versatile. It offers a fine level of performance (including with 3D video) without unwanted stuttering or transmission induced-noise and I found it easy to set-up and rate it a solid, attractively priced solution. However, the transmitter is a relatively simple affair with a single HDMI input, precluding HDMI switching and limiting its flexibility.

And the winner is…

Top of our wireless pole, then, is the Gigaview 821 from Marmitek – a wireless transmitter with all the bells and whistles. Full HD 3D compatibility, provision for discreet wallmounting, HDMI loopthrough and twin-input switching elevate it above much of the competition, and its performance is topnotch. Video quality is transparent to source and the ability to deliver multi-channel sound (be it core 5.1 or LPCM), makes it a viable option for someone that wants to remotely feed a home cinema system – perhaps a secondary rig in a den. It comes highly recommended. Yes, it’s not the cheapest of solutions, but I reckon you’ll find it money well spent…………………………………………

and……

 

Από τη Marmitek, έχουμε για άλλη μία φορά ένα
εξαιρετικό προϊόν, με το οποίο μπορείτε να μεταφέρετε
ασύρματα την εικόνα και τον ήχο από το HDMI 2
συσκευών, σε μία άλλη τηλεόραση ή προτζέκτορα!

 

Το GigaView 821 είναι ένα “HDMI Sender”, το οποίo λειτουργεί στις συχνότητες 5.1 – 5.6 GHz και σας δίνει τη δυνατότητα να συνδέσετε έως και 2 HD συσκευές ασύρματα με μία τηλεόραση σε απόσταση μέχρι 25 μέτρα με οπτική επαφή ή μέχρι 12 μέτρα χωρίς οπτική επαφή, όπως πχ σε ένα άλλο δωμάτιο.

 

Επιπροσθέτως, το σύστημα διαθέτει και επέκταση τηλεχειρισμού, προκειμένου να μπορείτε να ελέγχετε πλήρως τις απομακρυσμένες συσκευές με το δικό τους τηλεχειριστήριο. Η επέκταση τηλεχειρισμού (36kHz – 56kHz, NEC, RC5, RC6), περιλαμβάνει ένα καλώδιο στο οποίο έχουν συνδεθεί 3 υπέρυθροι μικροπομποί για ισάριθμες συσκευές, όπως ακριβώς ισχύει και στα γνωστά SD Video Senders.

 

Το Gigaview 821 υποστηρίζει αναλύσεις μέχρι και 1080p και όλα τα 3D formats, ενώ η έξοδος HDMI loop-through ουσιαστικά επιτρέπει και την απευθείας σύνδεση του HDMI στη βασική μας τηλεόραση, κάτι άλλωστε λογικό, καθώς σε διαφορετική περίπτωση, θα πρέπει να χρησιμοποιήσουμε ένα HDMI splitter με αποτέλεσμα επιπλέον τελικό κόστος.

Επίσης, μέσω του τηλεχειριστηρίου, μπορούμε να μάθουμε ποια πηγή HDMI είναι επιλεγμένη καθώς και την συχνότητα IR. Σε συνθήκες οπτικής επαφής, η ασύρματη σύνδεση είναι πολύ πιο εύκολο να επιτευχθεί. Μία συνηθισμένη εφαρμογή οπτικής επαφής, είναι όταν διαθέτουμε μηχανήματα σε ένα σημείο αλλά η τηλεόρασή μας πρέπει να βρίσκεται σε διαφορετικό σημείο του ίδιου χώρου.

Δοκιμή

Κατά τη δοκιμή μας, οι συσκευές λειτούργησαν άψογα σε εφαρμογή οπτικής επαφής και μάλιστα με εξαιρετική ποιότητα εικόνας σε HD κανάλια, τόσο δορυφορικά, όσο και επίγεια (ERT HD). Σε δοκιμές μη οπτικής επαφής σε διαφορετικό δωμάτιο, διαπιστώσαμε ότι το Gigaview 821 βρίσκεται κοντά στις επίσημες προδιαγραφές, δηλαδή στη μέγιστη απόσταση των 12 μέτρων, καθώς όταν ξεπεράσαμε σε γενικές γραμμές το εν λόγω όριο τοποθετώντας τον πομπό σε μεγαλύτερη απόσταση, δεν είχαμε σήμα.

Χρησιμοποιήσαμε -μεταξύ άλλων- δέκτες Linux HD (Vu+ & Xtrend) με απόλυτη επιτυχία, τόσο στην ασύρματη σύνδεση, όσο και στην επέκταση τηλεχειρισμού.

Η γνώμη μας

Το GigaView 821 σε κάποιες περιπτώσεις, μπορεί πραγματικά να αποδειχτεί ανεκτίμητο, καθώς έχετε εξαιρετική Full HD εικόνα και ήχο AC-3 και DTS χωρίς καλώδια!

 

Πηγή: Δορυφορικά Νέα

Άρθρο: Περικλής Παντολέων

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