[time-nuts] +/- TI button on 5370B

[Jim Palfreyman]

Folks,

I'm struggling to understand this button and how it reports intervals. It's
supposed to show negative when the Stop is before the Start.

When I connect up two clocks sending out 1PPS and say the one connected to
Stop is ahead then sometimes I'd get -123.45 ns (say) and sometimes it
flips to 999.999... ms. It can't seem to make up its mind which to use.

Why is this inconsistent?

If I flip it to + TI and make sure the leading clock is on Start - all
works well.

Thoughts?

Jim Palfreyman