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Topic:
Understanting the numbers
This thread has 2 replies. Displaying all posts.
Post 1 made on Thursday September 1, 2005 at 10:37
RC9500_user
Lurking Member
Joined:
Posts:
August 2005
6
Hi,
I ve decided to try to understand a lite bit more on IR codes and have read the FAQ on IR numbers.
Can you confirme if I am right with the following code

0000 006C 0012 0012 0008 001D 0008 005B 0008 001D 0008 006B 0008 0032 0008 0032 0008 001D 0008 0060 0008 021B 0008 001D 0008 006B 0008 001D 0008 001D 0008 001D 0008 001D 0008 001D 0008 0022 0008 0C20 0008 001D 0008 005B 0008 001D 0008 006B 0008 0032 0008 0032 0008 001D 0008 0060 0008 021B 0008 001D 0008 0041 0008 0047 0008 001D 0008 001D 0008 001D 0008 001D 0008 0022 0008 0C20

If i do the math rigth it should get me:

Frequence 38 381 khz
2 sequences 0f 18 word (incl 1 start and 1 stop word) so 2*16 bit
bit 0 has a dec. values of 8,29
bit 1 has a dec. values of >8,29

then the sended comando should be : send 187 64 187 96

Did i rigtht?
(this is the press button 1 for a "Force Series 5")

/Dag
Post 2 made on Thursday September 1, 2005 at 12:56
johnsfine
IR Expert
Joined:
Posts:
September 2002
5,159
I'm happy to encourage and help people trying to understand Pronto Hex and IR signals. But you ought to tell us what you want to accomplish (even if that's just "intellectual exercise").

For most purposes, you should start with the available software tools, rather than examining the hex by hand. For most purposes, those are all you need and you don't have reason to second guess their answers with manual decoding. But even if you do second guess the answers of the existing tools, you should do so to supplement those answers rather than to replace them.

The tools you should start with are
IrTool.exe from [Link: remotecentral.com]
and DecodeIr.dll from [Link: john.fine.home.comcast.net]

You will find that this particular protocol (Dreambox protocol as used by the Force Series 5) is unusually complex. Your basic read of the Pronto hex (frequency etc.) is correct. But your interpretation of bit 0 and bit 1 is totally wrong.

Some of my comments on Dreambox protocol are in my DecodeIr documentation at [Link: john.fine.home.comcast.net]

The best descriptions of this protocol are the ones Jon Armstrong wrote in a few old threads on Force and Dreambox
OP | Post 3 made on Thursday September 1, 2005 at 13:30
RC9500_user
Lurking Member
Joined:
Posts:
August 2005
6
John, thanks for the leading!

Well, the purpose is to understand a litte bit better what I am doing by pressing the buttons. Then I have a problem with repetion of the key on my RF extender (previous thread ) [Link: remotecentral.com]
Since the solution propose did not worked I ve decided to not die stupid ;-) and try to understand whats going on.
/Dag


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