This is a demo board for the Fluke 97 scope meter, portable oscilloscope.
It is believed that this is a very old instrument that is at least 20 years old.
I am very curious about the waveform of this, so it is supposed to be applied to the circuit using a 9V manganese battery.
I applied power using a DC power supply.
And I measured the waveforms from TEST POINT 1 to TEST POINT 5.
What's very interesting here is that the impulse voltage is over 3kV and I'm very surprised.
I plan to make an impulse generator by applying this device.

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