View source for 25ps Push-Pull Pulse Generator

The '''25 ps Push-Pull Pulse Generator''' (PPPG) produces simultaneous rising and falling edge pulses.
One pulse generator head is a standard [[S-52]], generating rising edge pulses.
The other pulse generator head is a specially modified S-52 that produces negative edge pulses.
The output tunnel diode that it uses is a General Electric SMTD-993, same as the 153-0040-00 used in the
regular S-52, but mounted upside-down.

The 25 ps Push-Pull Pulse Generator (and its special negative pulse S-52) were for internal purposes,
not for sale outside of Tektronix.
A total of twenty-six were made.

This pulse generator was first used to test the rise time of the [[M84]].

The 25ps Push-Pull Pulse Generator provides two independently isolated
transformer-coupled pretrigger pulse outputs via rear-panel BNC connectors.

The PPPG uses the [[260-0834-00]] DPDT switch, which is a maintenance issue.

==Manual==
* [[Media:25ps push-pull pulse generator.pdf|25ps Push Pull Pulse Generator Manual (PDF)]]

==See Also==
* [[284-based PPPG]]

==Photos==
<gallery>
Tek push-pull pulse generator 1.jpg
Tek push-pull pulse generator 2.jpg
Tek push-pull pulse generator 3.jpg
Tek push-pull pulse generator 4.jpg
Tek push-pull pulse generator 5.jpg
Tek pppg 2x7a29 7704a.jpg|Dual-trace showing both outputs. Timebase is externally triggered by PPPG trigger output. Displayed risetime is limited by [[7704A]] mainframe.
</gallery>


[[Category:Pulse generators]]