You need the null modem adapter which reverses the TX and RX lines on
one end of the cable. Also not all USB to Serial adapters work.. I
bought an old laptop with a real serial port at a junk computer shop
for not much more than USB adapter to solve the RS-232 problem
Dave
On 9/16/2017 6:48 PM, Scott McGrath wrote:
Connect to a terminal emulator and IDQ it you will either see garbage in which
case serial config is wrong and you need to try a new set of values
Or using a breakout box connect a scope to the txd and rxd lines and compare
pulse widths
Content by Scott
Typos by Siri
On Sep 16, 2017, at 4:22 PM, Bob kb8tq <[email protected]> wrote:
Hi
The gotcha is that the 3801 is an “ask for it / get it” protocol. If you don’t
get the query formatted correctly, there will be no data coming back. It’s not
like some other GPSDO’s that just yack all the time.
Bob
On Sep 16, 2017, at 9:27 AM, Brad Stockdale <[email protected]> wrote:
From what I recall, the manual was accurate on the baud, stop bits,
parity, etc. Just a few thoughts.... Make sure that the serial port is
working as expected... Do a loop back test if possible. Are you using
a USB to Serial adapter? Many of them have some weird quirks. IMHO,
FTDI based adapters work better than others. Forego using the Z38XX.
Try using a plain terminal app and see if you get any weird characters
echo'd back instead of expected responses. Etc... There are a lot of
possible causes when a serial connection isn't working right.
On 9/16/2017 at 12:26 AM, "Richard Solomon" wrote:Not according to
the manual, but then that could be my problem !!
73, Dick, W1KSZ
Sent from Outlook
________________________________
From: time-nuts on behalf of Bill Hawkins
Sent: Sunday, September 10, 2017 8:16:17 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] Z3801A and Z38XX Issues
Shouldn't that be 8 data bits?
Bill Hawkins
-----Original Message-----
From: time-nuts [mailto:[email protected]] On Behalf Of
Richard
Solomon
Sent: Saturday, September 09, 2017 4:24 PM
I downloaded and installed Z38XX, configured both the Port and Device
to
the recommended parameters:
Data Rate: 19,200
Parity: Odd
Data Bits: 7
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[email protected]
www.ArtekManuals.com
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