On 03/31/2012 08:11 AM, Hal Murray wrote:
There really is nothing much to this "modification." The Z3801A is already
designed to easily work on either interface, but most units are configured
for RS-422 as the default. It takes perhaps a half-hour to remove a few
zero-ohm SMD resistors and solder in a header strip. The simple procedure
is described and illustrated here:<www.ad6a.com/Z3801A.html>
You don't need the header strip. There are empty slots waiting for some of
the 0-ohm jumpers you have to remove.
I think they are the three to the right of the circle in figure-13 of the
above URL. You can work out which is which by following the traces or using
an ohm-meter.
Here is another URL in case you want a second opinion:
http://support.ntp.org/bin/view/Support/Z3801AReceiverModifications
The modification is trivial and recommended.
Has anyone figured out the other modifications possible? There's a
second FPGA to drop in, I just haven't bothered to try that. There seems
to be a secondary serial port available.
Cheers,
Magnus
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.
