My old '465 will trigger on the 1pps, but it's far easier to see the
trigger LED flash than finesse the brightness/sweep to make it visible -
something possible only on a 'scope with a decently bright tube.
Another cheap/easy trick to detect the 1pps pulse is simply to "listen"
to it with an audio amplifier.
While it can be heard on my Tbolt and '3801 with just a headphone
connected, a cheap audio amplifier works better, stretching the pulse
out and making an obvious "tick" at the 1 PPS rate. I suppose that a
diode/cap (1N914/1000pf) could be used to further stretch it...
Clint
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