Hi Alan, My $200 Tek 7854 mainframe with the 7S11/7T11 combo take my old scope up high enough to look at 13-14GHz repetitive signals. I don't think it can take a screen shot or do much if any analysis with these plugins though but they're still handy for a lot of things. I love the digital storage analog scopes of the 80s but the modern digital scopes have their place too.
-Bob On Sun, Oct 31, 2010 at 12:13 PM, Alan Melia <[email protected]>wrote: > Sampling scopes will display repetative signals above the sampling > frequency > if the repetition rate of the signals and sampling rate are not > related....there were GHz bandwidth scopes in the 60s using this method. > Not > a lot of good on single shot though. PC scopes are quite good for > repetative > slow signal and single shot within their sampling rate. i have a Pico Tech > 50Ms/s which works well with a simple old laptop.....it requires a parallel > port so was quite cheap on that auction site we love to hate. > > It is a case with ALL measuring equipment you been to know HOW it works to > interpret what it telling you. > > Alan G3NYK > > ----- Original Message ----- > From: "William H. Fite" <[email protected]> > To: "Discussion of precise time and frequency measurement" > <[email protected]> > Sent: Sunday, October 31, 2010 5:06 PM > Subject: Re: [time-nuts] A little quick advice, please > > > > Robert said; > > Bitscope headlines "100MHz analog bandwidth" but you have to big a bit > > deeper to find "up to 40Ms/s". Seems like they are wasting most of the > > bandwidth if the have an anti-alising filter. This is really only usable > to > > 20MHz single shot. > > > > Yes, I noticed that, too. Almost sounds like deceptive advertising. > > > > > > > > > > On Sun, Oct 31, 2010 at 11:28 AM, Robert Atkinson > <[email protected]>wrote: > > > > > Hi Bill, > > > It depends what you need/want. There are issues with the PC based > 'scopes. > > > Most obvious to the user is response time. It can be fustrating to have > the > > > screen change a second after the event happened! Other issues are > sample > > > rate and input voltage range. The Bitscope headlines "100MHz analog > > > bandwidth" but you have to big a bit deeper to find "up to 40Ms/s". > Seems > > > like they are wasting most of the bandwidth if the have an anti-alising > > > filter. This is really only usable to 20MHz single shot. > > > I could not find the input sensitivity and ranges. I looked at the > > > BitScope a while ago and decided it was overpriced at $600. I was lucky > to > > > find an HP 54645D for the same money. Unless you need the PC > connnectivty > > > and simple logic analyser (the 54645D gives both ;-), I'd look at a > > > conventional 'scope. As you are considering a PC 'scope, have a look at > the > > > Pico Technolgy range, > > > http://www.picotech.com/oscilloscope-specifications.html Their > bandwith > / > > > sample rates make more sense. I've used their products and they work > very > > > well. > > > > > > Robert G8RPI. > > > > > > --- On Sun, 31/10/10, William H. Fite <[email protected]> wrote: > > > > > > From: William H. Fite <[email protected]> > > > Subject: [time-nuts] A little quick advice, please > > > To: "PC Oscilloscope" <[email protected]> > > > Date: Sunday, 31 October, 2010, 13:35 > > > > > > 'morning, folks, > > > > > > I was just on a verge of purchasing a Tek TDS1012 scope when a friend > > > suggested that I could save a chunk of change by buying a BitScope. > > > Although > > > I've been aware of PC scopes, I never really looked into them. The > specs > > > look pretty good (the fact that I was looking at an entry-level Tek > will > > > give you some idea of my needs). > > > > > > Anyone have any experience with BitScope or other of the low-end PC > scopes? > > > > > > Thanks, > > > > > > Bill > > > > > > _______________________________________________ > > > > 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. > > > > > > > > > > > > > > > _______________________________________________ > > > 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. > > > _______________________________________________ > 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.
