On Sat, 2008-08-30 at 16:12 +0200, Arnold Tibus wrote: > On Fri, 29 Aug 2008 22:21:43 -0400, Pieter Ibelings wrote: > > >Hi All, > > >I got a Trimble Thunderbold from Ebay and I am having trouble triggering the > >HP 53131A. The 1PPS output shows a 10us pulse of 1 Volt into a high > >impedance probe. This seems low to me. Should it be 5 volts? Maybe the > >output 74AC04 is toast? > > >Pieter, N4IP > > Hi Pieter, > there is nothing to be worried about, I have the same problem with my > 53132A, it does not trigger on it with 50 ohms or high impedance load. > So I tried it with the 5334A - no problem at all ! It does trigger as > expected, > without any signal loss. > Seem to be a problem of the 53131A/ 53132A series counter. > > regards, > Arnold
Hi all, My PM6681 (aka CNT81) on automatic trigger level, fails to identify a reasonable trigger voltage. When set manually, there is no trigger problems at all. -- Björn _______________________________________________ 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.
