virtins.com

Thank you - my mistake!
When using a more appropriate scale, the levels are significantly lower. Using 'dbu' for example I am seeing noise peaks at up to - 50dbu with a 200MHz sample rate, up to -60dbu with a 100MHz sample rate and at a 50MHz sample rate the worst case is a 10MHz peak at -68dbu: All ...

Hello
I was taking some measurements of harmonic levels from a 7MHz sine wave carrier and was struggling to spot the harmonics amongst the general noise levels, so I thought I would investigate some more.

My setup is a Windows 10 laptop (latest software - build 1903), plus a Virtins DSO-2820E ...

SOLVED.

I have answered my own question - the solution was simply to use the small magnifying glass in the oscilloscope window - this allows the expansion of the time domain display whilst leaving the FFT resolution where it was already set.

Thank you
Bob

Wow!
That was a very well detailed response and I am very grateful for your time to answer this. I am delighted to see that there are so many possibilities in the package I bought.

Can you please answer me a follow-up, which is probably a generic question anyway.

Can you help me to understand the ...

Just to advise that my Windows 10 laptop was updated today via microsoft windows update. It is now at Build 1903.

Connecting my DSO-2820E caused Windows to go into it's 'found new device' routine. It then left me with an 'unknown' USB device instead of the correct Virtins USB driver.

It was ...

Hi,
I have just purchased the 2820E product and am generally pleased with it. However I note that the USB connection at the product is very sensitive to vibration or touch. It takes very little mechanical shock on the bench, or even a gentle touch on the cable, to have the product lose communication ...

As a new user of the 2820E system, I am still working through the Multi Instrument manual (phew!).

Can you help me understand how to make frequency response measurements of - say - a CR filter set at 1kHz.
- I have established how to set up the signal generator to provide a swept frequency, but am ...

Excellent - thank you.
I never thought to click inside the screen - but you are right - this displays the 'missing' toolbar.
Thanks,
Bob

My first day with my new VT DSO-2820E and enjoying it very much so far. I bought this to help my research as a licensed radio amateur.

I am unable to find the 'View Parameters' toolbar mentioned in MI manual at para 2.5.

I am simply trying to adjust the oscilloscope sweep time, and thinking that ...