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rise time of a pulse of a HP 8000

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LAN_403

Physikfan

Thu Jul 27 2017, 04:38PM

Registered Member #60240 Joined: Mon May 16 2016, 07:01PM
Location:
Posts: 304

The rise time of a pulse of a HP 8000A with about 1V amplitude is shown on an analog oscilloscope (Tek7904 with 7A29 and 7B10).
The rise time is about 500 ps, (0.5 ns).

IMG 3318trim400x307

The short rise time is certainly impressive for the age of the device,
however the associated power cable is borrowed only:

IMG 3319trim400x494

Please, could somebody help me in the search for a source for such a power cable?

Hazmatt_(The Underdog)

Fri Jul 28 2017, 03:51PM

Registered Member #135 Joined: Sat Feb 11 2006, 12:06AM
Location: Anywhere is fine
Posts: 1735

I know Apex Jr. has them, but my timing and his timing are difficult to work out.

They are out there, try Surplus Sales of Nebraska too.

These cords are getting more expensive every year, might want to buy 2 of them.

klugesmith

Fri Jul 28 2017, 08:54PM

Registered Member #2099 Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1714

You can make one from scratch, using three individual pin receptacle contacts.
Solder them to the stranded wires of a power cord, and insulate each one with heat shrink tubing.
If you want to handle it a a single plug, you can mold some kind of plastic resin putty around the three terminals, using your HP 8000 as an alignment jig.

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