[time-nuts] My stubborn Z3801A

Bob Camp lists at rtty.us
Tue Jun 15 07:37:01 EDT 2010


Hi

I've used Z38xx with both the 3801 and 3805. It does a good job with both. Com port setup is not automatic, so it's worth noting what serial setup (baud rate etc) your unit needs.

Bob

On Jun 14, 2010, at 11:21 PM, Robert Benward wrote:

> Hi Adrian,
> I got it working the other day, thanks to yours, and Hal's email with the port configuration.  I'm still not sure how the guy who sold it to me got it working with the 0 ohm resistors still in the circuit.  So much for buying at a hamfest, and so much for ethical people.
> 
> I will have to try Ulrich's software soon.  Tried Lady Heather, but it didn't see the unit.
> 
> Bob
> 
> 
> 
> 
> 
> ----- Original Message ----- From: "Adrian" <rfnuts at arcor.de>
> To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
> Sent: Monday, June 14, 2010 9:12 PM
> Subject: Re: [time-nuts] My stubborn Z3801A
> 
> 
>> Bob,
>> 
>> as by the Z3801 manual, the (RS422) port (of your PC) has to match the following settings:
>> Pace: None
>> Baud Rate: 19200
>> Parity: Odd
>> Data Bits: 7/chr
>> Start Bits: 1
>> Stop Bits: 1
>> There is no auto interface configuration mode inside the 3801. If the settings are wrong or the cable isn't correct, nuthing's gonna happen.
>> When you have installed SatStat on your PC, check if the default settings are correct, and select the COM port of your PC that you have connected the cable to.
>> If everything is right, select Comm Port -> Port Open. After a while, communication with the 3801 should be established, and the main form should begin to periodically update every few seconds.
>> Shoot me a PM if you don't have the manual.
>> 
>> Btw. I've now installed Ulrich's superb Z38XX that is much more versatile than the basic SatStat.
>> 
>> Adrian
>> 
>> 
>> 
>> Robert Benward schrieb:
>>> Adrian,
>>> I thought that was for the Satstat, is the 3801 auto sensing?  Don't you need to send a command?
>>> 
>>> Bob
>>> 
>>> ----- Original Message ----- From: "Adrian" <rfnuts at arcor.de>
>>> To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
>>> Sent: Monday, June 14, 2010 5:29 AM
>>> Subject: Re: [time-nuts] My stubborn Z3801A
>>> 
>>> 
>>>> It's in the same menu where you start / stop communication, just below the 'Port Open' command.
>>>> 
>>>> CommPort > Settings > Baud Rate
>>>> 
>>>> Adrian
>>>> 
>>>> Robert Benward schrieb:
>>>>> The minimum voltage is +/-3 volts, I'm getting about +/-6 right now.
>>>>> 
>>>>> How does one change the serial port speed, I don't see anything in SatStat.
>>>>> Bob
>>>>> 
>>>>> 
>>>>> ----- Original Message ----- From: "John Miles" <jmiles at pop.net>
>>>>> To: "Discussion of precise time and frequency measurement" <time-nuts at febo.com>
>>>>> Sent: Sunday, June 13, 2010 8:21 PM
>>>>> Subject: Re: [time-nuts] My stubborn Z3801A
>>>>> 
>>>>> 
>>>>>> 
>>>>>>> Still to go:  The RS-232 signals look fine going into the cable,
>>>>>>> +/-5V, any
>>>>>>> ideas why the computer won't read it?  Am I missing something?  I
>>>>>>> tried two
>>>>>>> different ports in case I screwed one up one of the ports, but no luck.
>>>>>> 
>>>>>> Haven't been following the thread so someone may have suggested this before,
>>>>>> but: try another computer, a shorter cable, or perhaps a slower baud rate.
>>>>>> 5 volts is near the bottom of the range for RS232 (the signalling levels are
>>>>>> supposed to be closer to +/- 15V, or at least +/- 12V).
>>>>>> 
>>>>>> Some RS-232 gear is happy with 5V but it isn't optimal in all cases.  The
>>>>>> problem you mention is more likely to be either a physical or protocol-level
>>>>>> mismatch than a real hardware fault.
>>>>>> 
>>>>>> -- john, KE5FX
>>>>>> 
>>>>>> 
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>>>>> 
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>>>> 
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> 
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