Manchester decoding using Labview

[trimode]

Does anyone have any experience (VI)with using Labview to access and decode
data that's Manchester encoded?

[CraigGraham]

What's Manchester encoding? I know in some areas of Manchester UK, the
spoken text is sometimes encoded by such mechanisms as the replacement of
"er" by "orh"...

Mario Santos wrote in message
news:3a59efd9@newsgroups.ni.com...
>
> Does anyone have any experience (VI)with using Labview to access and
decode
> data that's Manchester encoded?

[Kevin_work]

Mario Santos wrote:

> Does anyone have any experience (VI)with using Labview to access and decode
> data that's Manchester encoded?

Maybe I am thick headed, but the only Manchester coding I am aware of
is a physical coding that is done in hardware. I can't seem to relate
it to software in the way that grey codes or BCD is done.
All I have ever seen is done in hardware and the decoded data
sent out for software processing.

If you have more info I can try again.
Kevin Kent

[Amaury]

In manchester encoding a bit is represented by a rising or faling edge rather than a high or low.
a low or false value is represented by a falling edge (true to false)
a high or true value is represented by a rising edge (false to true).

Hence:
01 10 01 10 01 01 10=
1 0 1 0 1 1 0 0


If your input comes in as a binary array, you need to parse the array two ellements at a time to genreate the corresponding binary value.

Note that for a particular output baudrate, your clock must be twice that frequency.

Regards,
Amaury R,
NI Applications Engineer.

[MikeBowen]

Hi, Looking at your example there I noticed there are 14 bits for input and you have 8 bits for output.  Shouldn't that be 7 bits output?

mike