I recently got a used 53131A. It had the same problem, even though the BNC connectors are fixed to the front panel.
On Wed, Nov 19, 2014 at 2:18 PM, Anders Wallin <anders.e.e.wal...@gmail.com> wrote: > A colleague of mine had seen this exact same behavior on another 53230A. > The problem is a narrow trace right after the CH1 BNC input. > http://www.anderswallin.net/2014/11/53230a-counter-input-channel-fix/ > > There might be some chemical corrosion going on, since the other counter > that experienced this problem had definitely not been subjected to > overvoltage or other abuse. Or perhaps it's a mechanical issue where the > BNC-connector over time bends the PCB+trace. The BNCs don't appear > mechanically anchored to the front-panel, they are just soldered to the PCB > and stick out through holes in the front panel. > > We have one of the 100ps models and probably a third 20ps model also - time > will tell if these will break in the same way... > > Agilent/Keysight - are you listening?!? fix it please :) > > Anders > > >> Hi all, >> > >> > I have a 53230A that behaves differently on ch1 and ch2. >> > >> > With ch2 at DC/1Mohm/postive-slope/1V it triggers ok on my PPS signal and >> > shows e.g. a pusle-width measurement etc. >> > The same signal connected to ch1 fails to trigger. >> > _______________________________________________ > 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. _______________________________________________ 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.