Hi Everyone,

I have some problems with programming the Neo for my Meridian 201 pre-amp. I have been able to learn most of the codes but I'm stuck on a few. While going through the archives I think I've found the right codes but they are in RC5 format and i don't know how to convert those to Neo code.

This is what I have:
Vol + : 0 f 6e 2 65 a8 20 40 3f 4f af 9c 1c f0 f3 f4 a 24 7 7c 3
Vol - : 0 f 6e 2 65 a8 20 40 3f 4f af 9c 1c f2 f3 f4 a 24 87 7c 3
Mute : 0 f 6e 2 65 a8 20 40 3f 4f af 9c 24 f3 f3 f4 a 24 c9 7c 3
Tuner : 0 f 6e 2 65 a8 20 40 3f 4f af 9c 90 f1 f3 f4 a 24 64 7c 3
Tap 1 : 0 f 6e 2 65 a8 20 40 3f 4f af 9c 90 f3 f3 f4 a 24 e4 7c 3
Tap 2 : 0 f 6e 2 65 a8 20 40 3f 4f af 9c 90 f4 f3 f4 a 24 24 7d 3
CD : 0 f 6e 2 65 a8 20 40 3f 4f af 9c 30 f1 f3 f4 a 24 4c 7c 3
Vcr : 0 f 6e 2 65 a8 20 40 3f 4f af 9c f0 de cf d3 2b 90 f0 de 37
Phono : 0 f 6e 2 65 a8 20 40 3f 4f af 9c f0 e 3f 4f af 40 c2 3b 7c 3

Based on the archives I think the Meridian is controled by RC5 codes. Which would be:
Vol + : 19:16
Vol - : 19:17
Mute : 19:13
Tuner : 19:108
Tap 1 : 19:109
Tap 2 : 19:110
CD : 19:107
Vcr : 19:112
Phono : 19:114

The codes I want are:
Standby : 19:12 (this is the most important one)
Copy : ??:??
Mode : ??:??

I've tried to find a converter sheet or program but can't anything which converts RC5 codes. Of course if anyone has the Neo codes for the 201 pre-amp (originally from 209 remote) that would be even better.

Can somebody help me out? Much appreciated.

Groetjes,
Willem

Willem, I have written a converter but it does not yet work for RC5 because I don't have RC5 equipment. It would help if you can get me the Pronto codes for the same codes that you learned which work. I can analyze the Pronto and the Neo codes and try to get my converter to also work on RC5 equipment. Thanks.

Hi Patspector,

I've already used your converter for other equipment (Mits. X70 projector - another remote my Neo refuses to learn) and it works great. The Meridian codes above are coming from a 10 year old Denon learning remote (unimote 770) which was then programmed in the shop where I bought the Meridian. Some way or another they couldn't get the standby and other keys programmed so I did without for all those years. The Neo codes above are learned from the Denon, but since I never had the standby and other keys I started looking around these forums. I read somewhere that the Meridian 209 remote worked for the 200 series and the 500 series. I found a Pronto file with codes for the 500 series, but in Prontoedit you also only see the RC5 codes. So I guess we're stuck then, because I don't own a normal Pronto. Maybe somebody who ones a Pronto and a Neo can learn the [RC5] 19:12 from the Meridian and learn it to the Neo.

Question for you though (since you're the conversion magician (-; )... if the above RC5 codes are correct doesn't that give you enough examples to figure the conversion logic. I haven't tried myself but based an the above the code should be:
0 f 6e 2 65 a8 20 40 3f 4f af 9c ?? ?? f3 f4 a 24 ? 7c 3

Only three numbers to crunch (I know, sounds to easy to be through) and the first 2 codes have 256 possibilities and the last one 16. So that only makes it 256x256x16=1.048.576 possibilities. However, since the code is one different from the code I think I'm going to play around a bit and see what happens.

If anyone can help us... much appreciated.

Groetjes,
Willem

Hi Patspector,

Well... after a bit of code breaking I thought I had the solution for the 19:12 code (derived from the 19:16 and 19:17, 19:108 and 19:109 in combinaton with the 19:13). But unfortenately it didn't work. Although I found some logic in the codes:
- even and odd "belong" to eachother: 16+17, 108+109
- those two have the same 13th digit
- the 14th digit on the odd RC5 code is 2 higher then the 14th digit on the even of the pair
- the 3rd digit from the back for the odd RC5 code is 128 dec (or 8 hex) higher then the even one of the pair

So based on that logic I came up with the following code:
0 f 6e 2 65 a8 20 40 3f 4f af 9c 24 f1 f3 f4 a 24 49 7c 3
But it didn't work... the preamp didn't react at all.

Suggestions....?

Groetjes,
Willem

Willem,
The RC5 codes are Philips type which is different from all of types of common codes (Sony and NEC). Philips uses phase shift modulation while all the other codes use either pulse or space modulation. That is why I need Pronto style codes to see if we can crack the coding. I have detected a pattern that RC5 codes start with (0 f 6e) and have a (3f 4f af) transistion.

You are right in your guess that there are two sets of codes which vary. Keep on plugging away and try to load in different combinations to find ones which work. That was the way I started for some Sony codes and then I started spotting patterns.
Pat

Hi Patspector,

With the help of ProntoProEdit and the Pronto archives I found the following pronto codes for [RC5]:
19:12 5000 0000 0000 0001 0013 000c
19:13 5000 0000 0000 0001 0013 000d
19:16 5000 0000 0000 0001 0013 0010
19:17 5000 0000 0000 0001 0013 0011
19:107 5000 0000 0000 0001 0013 006b
19:108 5000 0000 0000 0001 0013 006c
19:109 5000 0000 0000 0001 0013 006d
19:110 5000 0000 0000 0001 0013 006e
19:112 5000 0000 0000 0001 0013 0070
19:114 5000 0000 0000 0001 0013 0072

The logic is very simple:
- 1st code tells it's an [RC5] code
- 5th string = hex 19
- 6th sring = hex code of RC5 code after ":"

In some cases I found the second string to be 0073 in stead of 0000 (for most of the 19:12 codes I found). Not sure what that does.

The Pronto code seems so simple. Is the real Pronto so smart that it converts these into something else before send?

I also found a doc with way more [RC5] 19:... codes. See [Link: meridian-audio.com]

Let me know how I can be of more service. I'll do some more playing around for the 19:12 code but till now no luck. Anybode out there who would be able to learn the 19:12 pronto code to a Neo???

Groetjes,
Willem

Bump...

Is there anyone out there who can enter the [RC5]19:12 code on a ProntoPro/TS-1000 ot TSU2000 and then learn it to a Neo and send me the Neo code. Up till now I've not been able to get the Meridian pre-amp to go to [stand-by].

Much appreciated.

Willem