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#277908 - 2018-07-12 14:50 Re: 271 IR input [Re: CMB Integrations - Bruce]
Registered: 2012-09-21
Posts: 53
Xymox Offline
Mostly harmless
Xymox Offline
Mostly harmless

Registered: 2012-09-21
Posts: 53
Loc: Arizona, USA
The weird thing is using this IR pinout and sending 861 IR codes does not work as the person above indicated. Some might, I did not try all codes. I'm wondering if this is a normal voltage for the IR input, as it's a custom pinout, it might also be a weird voltage?

I could port scan the IP and see what's open.

The problem with the OSC is that you end up with a much slower volume adjustment then doing IR. You can only send so many RS232/IP commands per second and last I left off the only increment was 0.5dB. What a good interface allows is to set a step interval OR a faster response. Which the 271 IP control might have, I don't know yet. The RS232 had a fixed limit with the speed of the interface and that was too slow VS the IR method.

The other method is to send direct volume assignments and keep track in code ie send 65.0 65.5 66.0 66.5. This can work well because you can set your own interval step, but, the Meridian RS232 has been a tad unreliable and sending a burst of these can cause it to go offline.

IR control is always to most stable and reliable on any device as long as it's reasonable to do IR. Going IP or RS232 when you don't have to is not the best way. If you don't need feedback, dont do it. Keep it simple.

So I'm going to reach out to Meridian today.

There is a Crestron module a kind person online offers for free, but, it's tied to the MAC of the processor and does more than I want to do. I could load and run that and then use Wireshark to packet capture and work out the port and any protocol.

I would prefer to write my own tho doing just the things I need rather then using some overly complex module.


861v8+ID40, HD621, 808.3, MC200, 8000, 7200HC, 4x 5200, analog sub, iPads.
The MC200 feeds a Crestron source.
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#277909 - 2018-07-12 15:22 Re: 271 IR input [Re: Xymox]
Registered: 2009-11-10
Posts: 1,405
CMB Integrations - Bruce Offline
Meridian Partner Working on the ultimate question
CMB Integrations - Bruce Offline
Meridian Partner
Working on the ultimate question

Registered: 2009-11-10
Posts: 1,405
Loc: Lexington, South Carolina, USA
The IR is 12 volts. It should work with others when wired correctly. Certain IR pickups sometimes have trouble with toggle bit codes as Meridian uses. Back in the Elan Home Systems days this was especially troublesome. Your best bet if you need those few milliseconds of your life back when changing volume is to use the G12 and an IR flasher.


www.cmbintegrations.com

Personal System #1 Theta Digital Cassablanca 4, 218, DSP8000.2SE, DSP7200SEHC, Revel F228be, Revel B112, Monitor Audio Silver 10, ATI 200WX5 Amp, JVC RS15, Shunyata Denali 6000S, Alpha power cables, Black Diamond Zero Edge screen. QNAP TS-251 3TB
Mark Levinson No515 Turntable

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#277910 - 2018-07-12 17:55 Re: 271 IR input [Re: CMB Integrations - Bruce]
Registered: 2012-09-21
Posts: 53
Xymox Offline
Mostly harmless
Xymox Offline
Mostly harmless

Registered: 2012-09-21
Posts: 53
Loc: Arizona, USA
As this is a "IR Input" I would expect to hook a Crestron IR port directly to it. No emitters or rcvrs required. This works with most every other device made in the last 20 years as they all use the Xantech std for pinout and voltages on the IR signal. The 12V might not be the issue. Its the voltage of the IR signal that might be different.

Lets say the Meridian "Infra-red eye" is not the same as a Xantech rcvr. Its sure not pined the same. Then the IR pulses on the signal line might be different. The best way to look at this is with a scope. But you get into other issues too, load resistance for example. Is it pull up or pull down ? Is it just a 0-5 v pules train ? or 0-12 ?

Meridian should not have used their own design for this. There is no logical reason to do so. Use the std everyone else uses.

The volume adjustment time is significant if you say vary from like 40-83. Or in case a loud scene comes up and you need to drop volume quickly. Using IR is maybe 2-3 times faster. Using the RS232 for volume increment using a fast as possible osc takes forever VS IR. I like a responsive volume control.

So what I do going back to a 565 is RS232 for most things but vol is IR. The 861 RS232 had some known issues and I finally just went all IR which was 100% stable all the time and responsive. I never really needed feedback info.

I would do a IP control and see how that goes with a 271. Maybe its stable and volume can increment as fast as IR.


861v8+ID40, HD621, 808.3, MC200, 8000, 7200HC, 4x 5200, analog sub, iPads.
The MC200 feeds a Crestron source.
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#277912 - 2018-07-12 19:08 Re: 271 IR input [Re: Xymox]
Registered: 2012-09-21
Posts: 53
Xymox Offline
Mostly harmless
Xymox Offline
Mostly harmless

Registered: 2012-09-21
Posts: 53
Loc: Arizona, USA
Thank you Bruce. I am glad you tried to help.

I port scanned the 271. Telnet port 23 is open and it’s not a normal Telnet connection. However it does not respond to commands that work on the 861. It also does not respond to Sooloos commands.

I played with volume and switched sources. The only feedback that came from it was rather technical.

PLL lost lock
DAC PLL locked

Maybe it needs to be in some kind of mode first.

I should get answers from Meridian today. I will post results for others on all this.

There may be another port open. My scanner might miss it.


861v8+ID40, HD621, 808.3, MC200, 8000, 7200HC, 4x 5200, analog sub, iPads.
The MC200 feeds a Crestron source.
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#277914 - 2018-07-12 19:27 Re: 271 IR input [Re: Xymox]
Registered: 2009-11-10
Posts: 1,405
CMB Integrations - Bruce Offline
Meridian Partner Working on the ultimate question
CMB Integrations - Bruce Offline
Meridian Partner
Working on the ultimate question

Registered: 2009-11-10
Posts: 1,405
Loc: Lexington, South Carolina, USA
I will be able to provide a little more info once I can get somewhere that I can use my PC.

PM me your email and I will forward you some additional info that you may find useful. It really boils down to how much time you have to spend on this and what that time is worth to you. The G12 is about $160.00 and they are plentiful in the US.


www.cmbintegrations.com

Personal System #1 Theta Digital Cassablanca 4, 218, DSP8000.2SE, DSP7200SEHC, Revel F228be, Revel B112, Monitor Audio Silver 10, ATI 200WX5 Amp, JVC RS15, Shunyata Denali 6000S, Alpha power cables, Black Diamond Zero Edge screen. QNAP TS-251 3TB
Mark Levinson No515 Turntable

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#277918 - 2018-07-13 04:23 Re: 271 IR input [Re: Xymox]
Registered: 2003-09-08
Posts: 143
Colin Offline
Hitchhiker
Colin Offline
Hitchhiker

Registered: 2003-09-08
Posts: 143
Loc: Sydney, Australia
Here is a document describing the IP protocol Meridian 218 Automation Interface.

It should be all you need to do a Crestron interface.


861v8+ID41 Revelation One filter, HD621, Musical Fidelity M8 700 mono blocks, Focal Scala (x2), Focal Mini Utopia (x3), Velodyne DD18, Oppo BD105, Roon NUC, 218, Radiance 2021, JVC X9000
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#277919 - 2018-07-13 07:11 Re: 271 IR input [Re: Colin]
Registered: 2010-12-09
Posts: 3,487
Ratbert Offline
Ravenous Bugblatter Beast of Traal
Ratbert Offline
Ravenous Bugblatter Beast of Traal

Registered: 2010-12-09
Posts: 3,487
Loc: Europe
Here it is as a document link.


Always learn from the mistakes of others. You can never live long enough to make them all yourself.
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#277926 - 2018-07-13 10:53 Re: 271 IR input [Re: Xymox]
Registered: 2009-11-10
Posts: 1,405
CMB Integrations - Bruce Offline
Meridian Partner Working on the ultimate question
CMB Integrations - Bruce Offline
Meridian Partner
Working on the ultimate question

Registered: 2009-11-10
Posts: 1,405
Loc: Lexington, South Carolina, USA
The connection to the product is by a raw TCP stream on port 9014


www.cmbintegrations.com

Personal System #1 Theta Digital Cassablanca 4, 218, DSP8000.2SE, DSP7200SEHC, Revel F228be, Revel B112, Monitor Audio Silver 10, ATI 200WX5 Amp, JVC RS15, Shunyata Denali 6000S, Alpha power cables, Black Diamond Zero Edge screen. QNAP TS-251 3TB
Mark Levinson No515 Turntable

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#277941 - 2018-07-14 10:23 Re: 271 IR input [Re: CMB Integrations - Bruce]
Registered: 2012-09-21
Posts: 53
Xymox Offline
Mostly harmless
Xymox Offline
Mostly harmless

Registered: 2012-09-21
Posts: 53
Loc: Arizona, USA
Thank you all.

Yes I got the document and awesome help directly from Meridian. It’s under control.

I will need to go play with the IP control in person to judge the best way to control volume. I made my own IP module and tested it remotely watching feedback, but, I want to be in person to play with volume speed.

The document is pretty clear 113ms between commands is the min. So to go from 50-60 is a bit over 1 second. That seems pretty good, but I will try both IR and IP to sort it out.

So far the basic functions work fine. No issues. I will sort thru the various feedback and decide what I want to display.

Looks like a nice protocol and I gotta say, human readable and simple is ALWAYS a good thing.

I have not tested IR yet.

Again, thank you for the help.


861v8+ID40, HD621, 808.3, MC200, 8000, 7200HC, 4x 5200, analog sub, iPads.
The MC200 feeds a Crestron source.
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