On Thu, 5 Jul 2018 at 05:35 Albert Otten <aodiversen@...> wrote:
The PG506 specs mention delay time 18 ns between trigger out and Hi Ampl
pulse out. I don' know of course how much delay time is added by your home
made pulse generator. But if you didn't deliberately build in a delay there
then the total delay time likely as much less than required to see the
same-as-triggered-on leading edge at the sampling combination. Hence you
might be looking at the leading edge of the next pulse and jitter will
include the between-pulses jitter of the PG506.
On the 2467 I'm looking at the edge right after the trigger, and I'm pretty
sure the 7S12/S-53 is also looking at the first edge.
Small Tek TD pulse generators were driven by the scopes calibrator output
or unterminated PG506 Hi Ampl output, with relatively slow rise times.
Roger looked at the terminated Hi Ampl output. What is your design?
Yeah - I aped the Tek design that uses the Hi Ampl output, I guess the slow
rise leads to jitter.
