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" <rfn...@arcor.de>
To: "Discussion of precise time and frequency measurement" <time-nuts@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" <rfn...@arcor.de>
To: "Discussion of precise time and frequency measurement" <time-nuts@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" <jmi...@pop.net>
To: "Discussion of precise time and frequency measurement" <time-nuts@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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