Re: [Elecraft] txinh timing?? Measured
Mark n2qt wrote: >It's a little bit quicker, full power in about 7-8ms. > >if anyone is interested in the pictures I took of the scope, email me >directly and I'll >send you a copy. (about 800k each) How much of that 7-8ms is part of the normal rise time? The value most people are looking for is the delay (if any) between release of txinh and the onset of the normal rising edge. -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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
Re: [Elecraft] txinh timing?? Measured
It's a little bit quicker, full power in about 7-8ms. if anyone is interested in the pictures I took of the scope, email me directly and I'll send you a copy. (about 800k each) Mark n2qt -Original Message- From: Igor Sokolov Sent: Thursday, April 26, 2012 2:02 PM To: Mark n2qt ; Elecraft@mailman.qth.net Subject: Re: [Elecraft] txinh timing?? Measured Thank you Mark. I was looking for this information. Well.. it is very slow indeed. I thought it is much faster. Could you possibly measure how long does it take for the signal to appear at the output after TX Inh set to low? 73, Igor UA9CDC > well I went and measured it. > > Max time for RF carrier to zero after asserting TxInh (TxInh Hi) was > just > under 10ms > minimum time was about 8ms. > > So since I was set up to measure things, I measured the time for carrier > to > decay (in Data > mode) after removing PTT and got pretty much the same times. > > Mark n2qt > > -Original Message- > From: Mark n2qt > Sent: Wednesday, April 25, 2012 5:05 PM > To: Elecraft@mailman.qth.net > Subject: [Elecraft] txinh timing?? > > I've looked but can't find the spec on how long after after initiating > TXINH > is the > K3 transmitter at zero power? > > (I'm working on an so2r interface which can take away an antenna from the > low > priority rig even if it was transmitting. ) > > It looks like the TXINH is a polled input and may be a bit a slow for my > application. > > > Mark n2qt > > __ > 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 __ 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
Re: [Elecraft] txinh timing?? Measured
Thank you Mark. I was looking for this information. Well.. it is very slow indeed. I thought it is much faster. Could you possibly measure how long does it take for the signal to appear at the output after TX Inh set to low? 73, Igor UA9CDC > well I went and measured it. > > Max time for RF carrier to zero after asserting TxInh (TxInh Hi) was > just > under 10ms > minimum time was about 8ms. > > So since I was set up to measure things, I measured the time for carrier > to > decay (in Data > mode) after removing PTT and got pretty much the same times. > > Mark n2qt > > -Original Message- > From: Mark n2qt > Sent: Wednesday, April 25, 2012 5:05 PM > To: Elecraft@mailman.qth.net > Subject: [Elecraft] txinh timing?? > > I've looked but can't find the spec on how long after after initiating > TXINH > is the > K3 transmitter at zero power? > > (I'm working on an so2r interface which can take away an antenna from the > low > priority rig even if it was transmitting. ) > > It looks like the TXINH is a polled input and may be a bit a slow for my > application. > > > Mark n2qt > > __ > 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 __ 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
Re: [Elecraft] txinh timing?? Measured
well I went and measured it. Max time for RF carrier to zero after asserting TxInh (TxInh Hi) was just under 10ms minimum time was about 8ms. So since I was set up to measure things, I measured the time for carrier to decay (in Data mode) after removing PTT and got pretty much the same times. Mark n2qt -Original Message- From: Mark n2qt Sent: Wednesday, April 25, 2012 5:05 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] txinh timing?? I've looked but can't find the spec on how long after after initiating TXINH is the K3 transmitter at zero power? (I'm working on an so2r interface which can take away an antenna from the low priority rig even if it was transmitting. ) It looks like the TXINH is a polled input and may be a bit a slow for my application. Mark n2qt __ 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
