[time-nuts] z3801a - serial help and for sale.
James C Cotton
jim.cotton at wmich.edu
Wed Jun 10 16:26:17 EDT 2015
Using a USB dongle with an Apple Mac Laptop works fine for me.
The chip is a FTDI FT232BL.
Drivers from the FTDI site.
In "terminal or console" use one of the following commands:
[generic $5 dongle with no serial number]
[xs880 with a serial number, http://www.usconverters.com/usb-serial-adapter-xs880]
Having one (or more) with a serial number(s) allows several to work at the same time...
I use the same USB-serial converters on windows PCs too.
----- Original Message -----
> From: "David Andersen" <dga at pobox.com>
> To: time-nuts at febo.com
> Sent: Wednesday, June 10, 2015 10:28:30 AM
> Subject: [time-nuts] z3801a - serial help and for sale.
> I'm throwing my hands up in the air - I don't have the time to
> wrestle my
> silly mac into trying to talk to the box, unless someone has quick
> on something I might be doing wrong.
> z3801a, jumpered to RS232, modified with an internal switching power
> (see photos below). Power light comes on, unit is outputting stable
> 10MHz. Doesn't GPS lock, but that makes sense, since I haven't been
> to issue a SURVEY command and I don't live where I used to.
> The internal green status light is blinking (as normal), suggesting
> it's probably happy and I'm an idiot for not being able to make it
> but I don't vouch for anything about it past the 10mhz being there.
> double-oven oscillator is clearly happy given the 10mhz (compared
> against a
> working Thunderbolt).
> Hooked up a serial cable at 19200, 7, O, 1, but only got a garbled
> prompt back - no response to standard z3801a commands. I *think* I
> the cable configured properly. I opened it up and checked the RS232
> jumpers and they're correct.
> I'm open to advice on getting the serial working under my Mac or
> Linux, or
> anyone who wants to relieve me of the burden of z3801a ownership and
> take a
> risk that it's a fixer-upper. :-) I suspect that in some previous
> life, I
> switched it over into a binary mode of some sort while using it to
> something, but I can't for the life of me remember what I might have
> Some reasonable price plus shipping and it's all yours... I'm trying
> de-clutter in preparation for a sabbatical on the other side of the
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