Hi > On Oct 31, 2014, at 5:07 PM, Bill Riches <[email protected]> wrote: > > Hi Bob, > > I connected 10 MHZ test jack output to a 15 db el-cheepo CATV amp and the > output of that to a 4 way splitter. Splitter outputs went to 3336-3586 and > counter. All seem to like the ref signal. Output of the amp takes makes the > semi-square wave into a sick saw tooth.
Feeding a square wave into an analog amp probably isn’t the best thing to do. Since it’s already a logic signal, buffering it with gates would make more sense. > Amp is only rated from 50 to 500 mhz so strange things are happening with 10 > MHZ input. Other CATV amps do have better low fx response - will play with > that later. > > I have 10 mhz pulse from Lucent into trigger input of 465 scope and > Thunderbolt gps output into vertical input of scope. Time base is set for > .01 Usec per div. I notice that trace moves right to left then left to right > about every 5 min or so. Moves about 3 div before changing directions. Why? > Is the Lucent still making a list? It has only been on for a few hours. It likely will take a couple of weeks before everything settles in. The 3810’s have been off power a *long* time. > It takes about 10 min for GPS to go out from a cold start. (My Thunderbolt > and RB do not change direction when using one as trigger and the other for > vert input to scope) > > I ordered a USB to RS422 converter cable - will be here next week. Let us all know if you find one that works well Bob > What program is sort of working? Using Windoze 7 64bit and have an old XP > machine available. > > Sure do appreciate all the info from our time nuts gurus! > > 73, > > Bill, WA2DVU > Cape May, NJ > > > --- > This email is free from viruses and malware because avast! Antivirus > protection is active. > http://www.avast.com > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
