PORTTA Quad Multiviewer 4K HDMI multiviewer switch 4x2 met Pip, PORTTA Quad Multi Viewer naadloze switch 4 in 2 uit met Toslink, 3,5 mm audio-uitgang ondersteuning 4K 30Hz, 6 Viewing modi, downscaler

Funktioniert bisher sehr gut. Hin und wieder verliert das Gerät am Ausgang das Signal, wenn man zu schnell umschaltet, aber im Gegensatz zur Anleitung lässt sich das Gerät über den "Service" Eingang mit einem Mikro-USB-Kabel an einen PC anschließen und wird dort dann als "DSD Service" erkannt, mit einem virtuellen COM-Port.Über diesen COM-Port (57500 Baud, 8N1) kann man dann mit einem einfachen Terminal alles auch ohne Fernbedienung oder Tasten am Gerät (letztere lassen sich sogar in der Kommandozeile sperren!) aus der Ferne steuern.Screenshots zeigen die Hilfe (mit "H" aufrufbar) und den Gerätestatus (mit "STA"). Man kann gut sehen, dass ich gerade 2 HDMI-Quellen angeschlossen habe und beide Quellen auf verschiedene Ausgänge durchgeschaltet habe.Leider ist der PIP-Modus wenig flexibel, einzig die Ecken lassen sich "rotieren" und die Quellen umschalten, aber verschiedene Größen etc. sind leider weder über das Gerät, noch über das RS232-Terminal möglich. Da hätte der Hersteller ruhig mehr an Power-User denken können (dann könnte das Gerät ja sogar fast schon ein richtiges Video-Mischpult ersetzen, mit den ganzen Funktionen).Definitiv ein guter Kauf, auch wenn ich vorher nicht wusste, dass der RS232-Anschluss tatsächlich funktioniert. Der Hersteller schreibt, dieser sei nur zum Firmware-Update gedacht.

I've been using for over a week. This multi viewer is so versatile, I am genuinely impressed by what it can do. Switching between inputs or changing the multi-view quick and easy. The ability to switch the sound input to the toslink is a great bonus for me.The only downside is a unresponsive remote, sometimes taking several presses to action . I replaced the button cell, but this did not help.In the end I decided to give it 5 stars anyway as the viewer is one of my best purchases.

なんか動作が不安定。

Bottom line: It's a well built device using HDMI and includes image scaling. An affordable home-theatre multiviewing/signal selector option. However, the remote is awful,This multiviewer was well packaged, and looks/feels like a high-quality well built device. Clear labels made initial for an easy set-up. Switching between the four source inputs is very easy as a one-touch choice on the remote. Selecting 'mode' button cycles between viewing patterns with inputs 1/2/3/4 coming in the same order each time. So for example, side-by-side or PiP will always default signal 1 and 2.The most amazing/wonderful thing is that this multiviewer automatically scales images correctly into whatever size is required on the pattern. This video scaling is not standard on multiviewers and professional quality multiver boxes don't all accept and send straight HDMI, or cost thousands. I saw this was advertised and am delighted it works as advertised.Now the downside: choosing the desired signal order means you have to rely on the remote control to select different source signals to go into the different patterns.However, unlike with the well-built main unit, the remote feels clunky and cheap. The biggest issue is that there are no visual cue's on either of the remote or the box of a successful button push (like my parents remotes from the 80s) and even after replacing the battery, the buttons don't all seem responsive with the same press pressure or length of time.So while the command to 'modify' the signal order for side by side should be 'modify + signal X (goes left) + signal Y (goes right)', I end up having to try this pattern by applying various 'strengths' of button pressure and holding down buttons for varying length of time before it seems to magically work. Had a hard enough time with side-by-side, and never successfully changed out the quad pattern to suit my tastes.This brings up the second irritant: the device does NOT remember pattern order. So if you jump through the magical hoops with the remote to get the signal pattern in the right order (e.g. setting side-by-side pattern PS5 input 2 on left and Netflix input 4 right), you have to do it all over again next time you sit down. So yes this is somewhat solve-able because you can adjust inputs (which is what I did) but the device is theoretically capable of pushing any signal to any quadrant of the screen so it's still irritating that it's not a 'set it and forget it' device.Finally, and this isn't a problem as long as you don't mind keeping the manual around all the time, but I found the button order and labeling in the bottom half of the remote to be a bit confusing and button sequence pressing order complicated enough that I was disapointed there was no quick reference guide image wasn't printed on the back of the remote. I'll scale one from the manual and print it to a sticky label myself, but would have been a nice touch to have it on the remote already.Also: company is unresponsive to request for .pdf version of the manual.

Operationally a bit quirky but you genuinely soon get used to it. As for function, quality of the up to 4 digital frames, its versatility, build quality, and joy of use - well this is a product WINNER!!Oh and switching between sources is instantaneous and lag is non-existant!RegardsMoonface