Products > Test Equipment

Show us your square wave

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tchiwam:
I was comparing 4 of the 8 putputs from my PPS distribution. That's s the rising edge of a 100us pulse.

The measurements on the side are out of the window so they are wonky except for the cursors.

bozidarms:
on CSA830A, my new toy :D  - 20,8ps -  rise and fall time!

HighVoltage:
@bozidarms

20.8 ps rise and fall times ?

What generator do you use for that?
And what scope and probe?

bozidarms:
It`s one Tektronix CSA803A with SD-24 TDR/sampling head.
However, that is my 3. SD-24, which has characteristics far more better than proclamated.
The other two wasn't so god.

That is a test pulse from SD-24 itself on SMA out, which is only shorted.
Measurement is at 10% - 90%.

Aldo22:

--- Quote from: Electro Fan on January 15, 2015, 09:14:19 pm ---- kind of curious to see what is the lowest price device is that can produce a really good looking square wave at 1, 5, 10, 20, and 30 MHz?

--- End quote ---
I don't know if "really good looking" but it's very low priced.  ;)
The signal comes from a ESP32 microcontroller  for ~ 5$.
The oscilloscope is a handheld ZEEWEII DSO2512G for ~ 80$.

Please note:
The 40MHz measurement was made in the overclocking mode of the device (Menu Aux + ⇧ [long])
with 250MHz probes and a ground spring.

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