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Re: How does Reset sequence work?



There is a hardware device, running a state
machine that is attached to the command
receivers.  This command receiver device
is looking for particular length sequence of
zeros and ones.  After receiving this sequence,
a hard reset of the IHU occurs.  We know there
is some difficulty with the 70 meter low gain or the
IF matrix but we should hear the bird on 70 cm.

Yes, Peter's message said IPS was being
loaded.

Bob

----- Original Message -----
From: "Diggs, Steve" <Diggs@daugherty.com>
To: <amsat-bb@amsat.org>
Sent: Monday, December 25, 2000 12:13 AM
Subject: [amsat-bb] How does Reset sequence work?


> Hearing Peter's recent message about Reset attempts has me wondering how
it
> works:
>
> 1. Does the Reset command get ACK'd? If so, what part of the system does
> that? I thought command acks were done in IPS. From what I understand, IPS
> is not being reloaded at this point.
> 2. What device interprets the Reset command? Some hardware modem built
into
> the system?
>
> Rather than bog everybody down in another long message cycle, maybe
somebody
> knows a URL where this aspect of AO-40 is documented.
>
> Best wishes to all for the Christmas season.
>
> Regards,
> Steve Diggs, W4EPI
> Atlanta Area Coordinator
>
> ----
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>

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