Joe, You were right!
The "Y" cable at the SteppIR connector had the other leads of the RS232 connector connected. I disconnected all cable leads and left only 2 and 5 cable leads connected. I confirmed that 7 and 9 were already jumpered. All is working now using the Edgeport USB>SERIAL converter. Thanks! 73, Bud W3LL w...@arrl.net ----- Original Message ----- From: "Joe Subich, W4TV" <li...@subich.com> To: "'Bud Governale, W3LL'" <w...@arrl.net> Sent: Tuesday, March 30, 2010 12:38 PM Subject: RE: [Elecraft] K3 Edgeport Adapter with K3 and SteppIR > My K3 serial number is 2285. Not sure if this is early or not. As far as I know its after the problem was resolved. However, you could check the -V generator on the KIO3 board. > I will check the Y cable. I think there are more than 2 wires > connected to the SteppIR controller. Should only be 2 and 5 with a jumper between 7 and 9 (if I recall correctly). 73, ... Joe, W4TV > -----Original Message----- > From: Bud Governale, W3LL [mailto:w...@arrl.net] > Sent: Tuesday, March 30, 2010 11:37 AM > To: Joe Subich, W4TV > Subject: Re: [Elecraft] K3 Edgeport Adapter with K3 and SteppIR > > > Joe, > > I will check the Y cable. I think there are more than 2 wires > connected to the SteppIR controller. > > My K3 serial number is 2285. Not sure if this is early or not. > > 73, > > Bud W3LL > w...@arrl.net > > > ----- Original Message ----- > From: "Joe Subich, W4TV" <li...@subich.com> > To: "'Bud Governale, W3LL'" <w...@arrl.net> > Sent: Tuesday, March 30, 2010 11:15 AM > Subject: RE: [Elecraft] K3 Edgeport Adapter with K3 and SteppIR > > > > Bud, > > Also make sure the K3 is able to pull a reasonable load > to at least -3V. Some early units had "weak" DC to DC > converters and did not necessarily handle the a solid > RS-232 signal well. > > Make sure your Y cable has only two wires to the SteppIR > controller as well. There are additional voltages on some > pins that can cause an issue. > > 73, > > ... Joe, W4TV > > > > -----Original Message----- > > From: Bud Governale, W3LL [mailto:w...@arrl.net] > > Sent: Monday, March 29, 2010 10:11 PM > > To: Joe Subich, W4TV > > Subject: Re: [Elecraft] K3 Edgeport Adapter with K3 and SteppIR > > > > > > Joe, > > > > I completely agree with your analysis. > > > > I'll be in touch with SteppIR for a remedial suggestion. > > > > Thanks and 73, > > > > Bud W3LL > > > > > > > > ----- Original Message ----- > > From: "Joe Subich, W4TV" <li...@subich.com> > > To: "'Bud Governale, W3LL'" <w...@arrl.net>; > > <elecraft@mailman.qth.net> > > Sent: Monday, March 29, 2010 6:15 PM > > Subject: RE: [Elecraft] K3 Edgeport Adapter with K3 and SteppIR > > > > > > > > Do you have an application (the K3 Utility) that can send a > > command to the K3 and determine if the K3 is responding (e.g., > > changes mode in response to the MD0;/MD1; commands)? > > > > My guess is that the SteppIR controller loads the data line > > from the K3 to the Edgeport. That loading is most likely > > too much pull-up current which prevents the K3 from pulling > > the output data line below -3V as required by the RS-232 > > standard. > > > > It is likely that the "consumer grade" Prolific converter > > worked when the data line went below 1V. The Edgeport > > interfaces are widely used in industrial control applications > > where the noise margin is critical so they adhere much more > > closely to the +/-3V minimum signal level standards. > > > > 73, > > > > ... Joe, W4TV > > > > > > > > > > > -----Original Message----- > > > From: Bud Governale, W3LL [mailto:w...@arrl.net] > > > Sent: Monday, March 29, 2010 5:19 PM > > > To: Joe Subich, W4TV > > > Subject: Re: [Elecraft] K3 Edgeport Adapter with K3 and SteppIR > > > > > > > > > Yes, when I disconnect the leg of the "Y" cable that > attaches to the > > > SteppIR control box and leave the "Y" cable in place the > K3 begins > > > to respond. > > > > > > 73, > > > > > > Bud W3LL > > > > > > > > > ----- Original Message ----- > > > From: "Joe Subich, W4TV" <li...@subich.com> > > > To: "'Bud Governale, W3LL'" <w...@arrl.net>; > > > <Elecraft@mailman.qth.net> > > > Sent: Monday, March 29, 2010 5:04 PM > > > Subject: RE: [Elecraft] K3 Edgeport Adapter with K3 and SteppIR > > > > > > > > > > > > Have you checked the "Y" cable to make sure it is appropriate for > > > the new hardware? > > > > > > If you disconnect the leg of the "Y" cable that attaches to the > > > SteppIR control box but leave the Y cable in place does > the K3 begin > > > to respond? > > > > > > 73, > > > > > > ... Joe, W4TV > > > > > > > > > > > > > -----Original Message----- > > > > From: elecraft-boun...@mailman.qth.net > > > > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bud > > > > Governale, W3LL > > > > Sent: Monday, March 29, 2010 1:31 PM > > > > To: elecraft@mailman.qth.net > > > > Subject: [Elecraft] K3 Edgeport Adapter with K3 and SteppIR > > > > > > > > > > > > I have my K3 and SteppIR controller talking perfectly thru the > > > > computer logging program and "Y" cable using a Prolific USB to > > > > Serial converter cable. > > > > > > > > I purchased an "Edgeport 8" USB to Serial converter and > > removed all > > > > the Prolific cables to existing devices and connected > all directly > > > > to the Edgeport. All three devices work perfectly. > However the K3 > > > > no longer responds to computer control. It's not > recognized by the > > > > software. > > > > > > > > I discovered that the K3 is recognized and controlled by the > > > > software (both DX4win and N1MM) when I remove the "Y" cable > > > > connection to the SteppIR. > > > > > > > > If I reconnect the SteppIR controller then the K3 is no longer > > > > controlled by software. If I go back to the Prolific USB > > to Serial > > > > cable all works well again. > > > > > > > > Anyone know or care to guess why the K3 to SteppIR > > combination won't > > > > work thru the Edgeport 8 port adapter or any other of > its 7 other > > > > ports? > > > > > > > > 73, > > > > > > > > Bud W3LL > > > > w...@arrl.net > > > > > > > > > > > > ______________________________________________________________ > > > > Elecraft mailing list > > > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > > > Help: http://mailman.qth.net/mmfaq.htm > > > > Post: mailto:Elecraft@mailman.qth.net > > > > > > > > This list hosted by: http://www.qsl.net > > > > Please help support this email list: > > http://www.qsl.net/donate.html > > > > > > > > > > > > > > > > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
