: James C Cotton jim.cot...@wmich.edu
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Cc:
Date: Wed, 10 Jun 2015 16:26:17 -0400 (EDT)
Subject: Re: [time-nuts] z3801a - serial help and for sale.
David,
Using a USB dongle with an Apple Mac Laptop works fine for me
:
-- Forwarded message --
From: James C Cotton jim.cot...@wmich.edu
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Cc:
Date: Wed, 10 Jun 2015 16:26:17 -0400 (EDT)
Subject: Re: [time-nuts] z3801a - serial help and for sale.
David,
Using a USB
, June 11, 2015 4:39 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] z3801a - serial help and for sale
Thanks for the suggestions!
It turns out the answer was my serial dongle was failing.
*head bonk* I swapped it out for another FDTI-based dongle and suddenly
there's a happy working z3801a
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 advice
on something I might be doing wrong.
z3801a, jumpered to RS232, modified with an internal switching power supply
(see photos below). Power light
Try going through all the speeds starting at 300. Sounds like a baud rate
mismatch to me from the symptoms
Also try 8 bits 1 stop no parity
Content by Scott
Typos by Siri
On Jun 10, 2015, at 10:28 AM, David Andersen d...@pobox.com wrote:
I'm throwing my hands up in the air - I don't
Hi
Normal drill for this sort of thing:
1) First connect the serial dongle back to back (output to input) and make sure
it gives you back what you type in. If not, find another dongle.
2) Check the output levels from the Z3801 with a scope. It should be swinging
at least
+/- 5V and more like
...@pobox.com
To: time-nuts@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
advice
on something
kb...@n1k.org said:
2) Check the output levels from the Z3801 with a scope. ...
A quick power cycle between each of the 9 possibilities should get it
feeding out something that you can recognize. Yes this is a generic
approach, but sometimes the generic one is quicker than doing a bunch of
