[time-nuts] Z3801A and Z38XX Issues

[Scott McGrath]

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 <kb8tq at n1k.org> 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 <taynoo at hush.com> 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:time-nuts-bounces at febo.com] 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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