I finally got the time tagging fpga I was playing with to a semi-usable
state. I mentioned in an earlier post that I was unable to compile or
link the FTDI library but Magnus Karlsson very kindly rewrote a program
of his to provide me with a utility to set up the USB asynchronous
parallel interface characteristics on the PC. Only bad thing is you're
running blind so it pays to do a short run to make sure all's well
before committing to a long capture.
I just finished a trial run using the Riley DMTD with three devices. I
have a rather shaky 5065A, an Austron 1250 and an FTS 1050. The
attached trace shows the 5065 misbehaving about half way through the
run, the FTS displaying a periodic oscillation and the Austron just
doing it's thing. It's nothing earth shattering but it sure is nice
having the third clock to sort out who's being naughty or nice. I kinda
suspect the FTS oscillation is related to the battery charging cycle;
back in 2013 TVB mentioned he'd had problems with the FTS battery
charging affecting the outputs. Anything specific to look at aside from
replacing all the usual capacitor suspects?
Regards,
Bob Darby
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