Successful implementation

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Successful implementation
« on: May 02, 2018, 06:06:54 PM »
it would be very encouraging to know about the experience and success of others who implemented the scopeFun. i could not find much videos on youtube  about scopefun. kindly post youtube links if available.
Thanks in advance.

Re: Successful implementation
« Reply #1 on: May 03, 2018, 01:19:01 PM »

Re: Successful implementation
« Reply #2 on: February 10, 2019, 06:31:29 PM »
I would like to experience to visualize PWM and signals with high frequency.

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Dejan

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Re: Successful implementation
« Reply #3 on: February 15, 2019, 10:40:48 PM »
I have captured some signals with ScopeFun

This is comparison of two 10 Mhz square wave signals:
- CH0 (yellow) is the output of ScopeFun AWG
- CH1 (blue) is the output of Tektronix AWG2040

Both signals are sampled at 250 Msps

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Dejan

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Re: Successful implementation
« Reply #4 on: February 15, 2019, 10:51:47 PM »
Output of ScopeFun AWG
10 Mhz square wave sampled at 500 Msps
« Last Edit: February 15, 2019, 11:09:28 PM by Dejan »

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Dejan

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Re: Successful implementation
« Reply #5 on: February 15, 2019, 10:55:28 PM »
Output of Tektronix AWG 2040: Short pulse (~ 4ns)

First image is signal sampled at 500 Msps
Second image is the same signal sampled in ETS mode at 2.0 Gsps
« Last Edit: February 15, 2019, 10:59:44 PM by Dejan »

Re: Successful implementation
« Reply #6 on: April 17, 2019, 03:24:37 PM »
I have captured some signals with ScopeFun

This is comparison of two 10 Mhz square wave signals:
- CH0 (yellow) is the output of ScopeFun AWG
- CH1 (blue) is the output of Tektronix AWG2040

Both signals are sampled at 250 Msps

Is the overshoot on the scope-fun compared to the Tektronix input circuitry understood?

It looks like a cause of concern for capturing transfer functions as we don't know if the SUT or the scope is contributing to the overshoot.

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Dejan

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Re: Successful implementation
« Reply #7 on: April 17, 2019, 08:47:29 PM »
Both signals were captured with  the same ScopeFun oscilloscope, so the difference is due to AWG outputs. If we compare both signals to an ideal square wave signal, we see some overshoot in the ScopeFun AWG signal and some undershoot in the Tektronix AWG signal.

With every measurement there is always some bandwidth limitation, so for capturing transfer functions it's more important to know what is the response of the signal path without DUT. And because we know this information (we can measure it when AWG is connected directly to oscilloscope), we can use it to get accurate measurements of transfer functions, even if the response of the signal path is not perfectly flat.

Re: Successful implementation
« Reply #8 on: April 19, 2019, 09:04:46 PM »
Dejan: thanks for the clarification. I misinterpreted what was being measured.