OPPO HM-31 HDMI Switch
For the HM-31 you will find everything from specs and a wall mount template to RS 232 codes: HM-31 Advanced 3x1 HDMI Switch. Opening the Box OPPO enhances even the simple things with quality packaging. The switch box comes in a cloth envelope along with stick-on rubber cushions for set top applications versus wall mounting.
When you take it out of the bag you find this cute and appealing little plastic box with piano black on the sides, a sleek silver trim on the top beveled edge along with a black brushed aluminum top that can easily compliment other visible products in your system. A card-type remote provides one button for switching to the next active input or 3 individual buttons for each input. All of this is packed in a nice velvet plastic divider along with the power supply.
The power supply wall wart is offset to the side to avoid taking up two outlets. That seems like a great feature but that will depend on the orientation of your outlets. Oddly enough for me my outlets and strips made that the most difficult part of this installation.
It supports hot plug and play and auto switching as evidenced when I hooked it up. I simply inserted the HM-31 in between a Toshiba HD-A35 HD DVD player and a Denon AVR-3808Ci receiver while in the midst of a movie. I looked up at the screen and within a few moments there was Phantom of the Opera in 1080p24 with sound. A quick look at the receiver confirmed my bitstream DTS True HD was still engaged.
From there I connected a Sony PS3 and switched over finding a picture and "PCM" displayed on the receiver. Priority, Auto and Remote Switching Priority and Auto switching logic can easily make remote control unnecessary. Auto switching logic detects live HDMI connections automatically selecting the active source if the other two sources are turned off.
Simply by turning sources on and off you can automatically switch without doing anything more. To turn off the HDMI on these devices requires pulling the AC power. In this application, Priority Switching logic becomes your auto switching best friend. Input 1 has the highest priority and input 3 the least.
By connecting your always active HDMI source to input 3 you can switch to input 2 by turning on that source. You can leave input 2 on along with input 3, but when you turn on input 1 it will switch to that. Conversely, if input 1 is on then you can't auto switch to input 2 or 3 without turning it off. If you have more than one HDMI source always active you can toggle through the three inputs via the front panel or use direct input select via the remote.
If the HM-31 can't be easily accessed or will be hidden from view, OPPO provides an external IR sensor accessory to get the IR detector in view of your remote(s). HDMI does not specify cable length, only a minimum performance standard which can be extended by the quality of materials used. This is what OPPO calls Cable EQ.
This is a very beneficial feature, but should be taken with a grain of salt. The OPPO website documents a successful 100 foot HDMI application, two 50 foot cables with the HM-31 in between, yet provides a disclaimer that your mileage may vary.
The best general advice is that once you hit 30 feet, you are pushing the tolerance of the HDMI system design. At 40 feet you have reached design limitations so going beyond that can open yourself up to problems. How much further you can go will depend on the integrity of the source, cable and display HDMI design. For More Information When it comes to cable lengths and the HDMI specification, you can find more information in the HDMI FAQ at HDMI.org. However, I find that their site tends to gloss over the finer points of the specification.
For a thorough analysis of the HDMI specification and dealing with it in the real world, I recommend Blue Jeans Cable. Radiient Select-4ce Four-Input HDMI May 11, 7:52pm Here is the website: www.radiient.com How do you all think these two switches compare to each other. Here is some info on the Radiient switch.
Four selectable HDMI Re: OPPO HM-31 HDMI Switch May 12, 12:42pm It's just a switcher.. Provided it meets HDMI specs it can be reviewed now.
The Radient provides a nice little holding area for the remote plus one more HDMI input The OPPO remote has more features, the switcher provides an optional IR extender alo Looking for the perfect Switch May 14, 5:35am For my Home Theater System, I'm looking for a way to run an X-Box 360, a Blu Ray DVD Player, and a Media Player all through HDMI and through the Home Theater Speakers.
My Samsung DVD Home Theater in a Box has 1 HDMI Input and 1 HDMI Output. So.. Tech Services USA, a division of Mastertech, creates sites, communities and libraries for consumers and professionals to share their technology knowledge and learn from each other. These include The ISF Forum and HD Library. HDTV Magazine exclusively publishes HD Library and Forum for Tech Services USA.
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