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 _______________________________________________ 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.
