I'm not sure of the real constraints here either, but another
possibility might be to record .mp3 files. Then the main problem would
be providing power for the several days worth of recording that would
fit on a larger compact flash or on a hard disk. Perhaps this could be
combined with software to extract the times of day or actual signals
you're interested in?
Can you describe the problem in more detail (it sounds interesting)?
Steve P
--- In "ozrall" <> wrote:
>
> Hi all,
>
> Hoping someone either knows of a lower cost alternative to the Sound
> Devices CL1, which costs around US$325-375 or has some control
> documentation on Sound Devices' communications protocol.
>
> I am aware that the SD7### series can be controlled via the CL1 serial
> interface either by a PS2 keyboard or by using (5) dedicated switches
> on the input pins to the CL1 and programming the SD7### for whatever
> keyboard shortcuts or for which hard wired connections on the CL1 do
what.
> But there doesn't appear (from my reading and playing), any way of
> actually programming the units on their own, like some other recorders.
>
> Is there any known documentation on the signals and protocol the
> SD7### uses for its communication ?
>
> I would like to use some small dedicated microprocessor units (AVR
> Atmels) that I have made to control the SD7### units so I can remotely
> control them in the field to record at multiple preprogrammed times
> and intervals (that would otherwise be impossible and/or inconvenient).
>
> I might with some difficulty derive the protocol but this would be
> hard and time consuming for me and in any event necessitate the extra
> expense of a CL1 which I am trying to avoid.
>
> Heres hoping !
>
> Thanks Rally
>
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