[time-nuts] Z3801 Replacement GPS Receiver Card

[Azelio Boriani]

Anyway, are you sure that the GPS unit is faulty? Can you test it alone?
The unit is responsive on the serial port? Is the Z3801A sending commands?
Can you verify with a 'scope on the serial line if there is any signal?

On Sun, Sep 16, 2012 at 2:54 PM, Mike S <mikes at flatsurface.com> wrote:

> On 9/15/2012 2:11 PM, paul swed wrote:
>
>> Then respond back with whatever the response might be and then simply pass
>> through in both direction whatever comes next.
>> Could an updated rcvr be used.
>> Is this init command really the only gotcha?
>>
>
> It's more than just the init command. The z3801a also sends @@Ca, @@Cg,
> @@Ab, @@Ah, @@Aj, @@Ak, @@Al, @@An, @@Ar, @@Av, @@Ax, @@Ay, @@AB, @@AC,
> @@AD, @@Ba, @@Bc, @@Bk, @@Cg, @@At, and @@Bn, none of which are available
> on an M12 (which would be the logical target if you're going to the trouble
> of an adapter), so would need to be converted to other commands, and the
> correct response returned. In addition, the response to the @@Bb command
> (Visible sat status) would need modification.
>
>
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