Tektronix 7904 Oscilloscope

Here are some images of one 7904 mainframe  with a 7A24 vertical module and a 7B92A horizontal module.  The scope screen shows the pulse from an S52 pulse head; the rise time is about 850ps which translates into a bandwidth of about 412 MHz.  Since the 7A24 plug-in is specified at 400 MHz, this is about right.

Very fast rise time pulse on a Tektronix 7904 with a 7A24 vertical module

This is the same pulse from an S52 pulse head but using an S4 sampling head instead of the 7A24 vertical amplifier

Very fast rise time pulse on a Tektronix 7904 with an S4 sampling head

Shaun Merrigan

Tektronix 7000 Series Equipment

I am doing some testing on recently acquired Tektronix 7000 series equipment.  Involved in these images is a Tektronix 7904A mainframe using a 7S12 TDR/Sampler plug in with an S52 pulse generator and S4 sampling head.

Tektronix 7904A Fast Rise Time Pulse

Tektronix 7904A Fast Rise Time Pulse

The rise time on of the pulse is about 32ps which translates to a bandwidth of about 11 GHz; all this for a few hundred dollars.

Shaun Merrigan