One more suggestion... I keep a stash of DB9-TO-RJ45 and DB25-TO-RJ45 adapters around. These come unassembled. I use these on all my Z3801A's, Z3815A's, and pretty much all other serial gear. You just put together the adapter you need by placing the pins appropriately on each adapter. With the right tool you can disassemble them and reuse them, too. On 9/17/2017 at 1:31 AM, "Artek Manuals" wrote: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 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 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@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 >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to >>> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@febo.com >>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >>> and follow the instructions there. >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > -- Dave Manuals@ArtekManuals.com www.ArtekManuals.com --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.