Said, Patiently waiting for my 10 mhz unit. What are your ideas on using it to control a 10811 instead of the built in 10 mhz osc? Will there be enough control voltage for the 10811?
Regards, Bill Riches Cape May, NJ -----Original Message----- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of S. Jackson via time-nuts Sent: Monday, November 17, 2014 6:40 PM To: j...@jtmiller.com; time-nuts@febo.com Subject: Re: [time-nuts] LTE Lite Came!! Hi Jim, thanks for your question. The reason we put that note in there is two-fold: 1) On these 20MHz units the TCXO output in fact can drive 50 Ohms inputs as we put a strong buffer on the board, but the synthesized RF output and the 1PPS output cannot drive 50 Ohms. Those two are CMOS 1M Ohms input only. Using 50 Ohms impedance on the TCXO output will however heavily tax the internal power supply and CMOS buffer, and create heating on the board right next to the TCXO which will affect stability somewhat. So can it be done? Yes. Should it be done? That's up to the user to decide. 2) On the next batch of 10MHz DIP-14 TCXO units the external TCXO itself drives the output directly without a buffer. That TCXO is not capable of driving 50 Ohms inputs, only CMOS 1M Ohms inputs. So a buffer is required on these 10MHz units if 50 Ohms test equipment is to be used. Hope that explains it, bye, Said In a message dated 11/17/2014 15:27:21 Pacific Standard Time, j...@jtmiller.com writes: Hello Said I got a nice surprise in my mail today: LTE-Lite! There was a note with it that said (in effect) none of the outputs are 50ohm capable. So it looks like I should build up a little board with the divide by two and incorporate on that a 50ohm capable buffer for clock transmission to the rest of my system? BTW, you're welcome to answer via Timenuts as I'm sure others will have the same question. Thanks! Jim AB3CV _______________________________________________ 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. --- This email has been checked for viruses by Avast antivirus software. http://www.avast.com _______________________________________________ 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.