2206B problem with image signal

Post any questions you may have about our current range of oscilloscopes
Post Reply
User avatar
Maks
Newbie
Posts: 0
Joined: Fri Sep 24, 2021 5:57 pm

2206B problem with image signal

Post by Maks »

Hi. In the range from 45 to 50 MHz, the waveform display changes when the second channel is turned on and off.
This is fine? Or maybe need to update the firmware for the device?
Thank.

https://yadi.sk/i/VZrOGrZnCoXT-Q
Top
bennog
Advanced User
Advanced User
Posts: 208
Joined: Mon Nov 26, 2012 9:16 am
Location: Netherlands

Re: 2206B problem with image signal

Post by bennog »

This is because the sample rate of the scope changes from 500 mS/sec to 250 mS/sec.
The total sampling rate is 500mS/sec if you enable the 2nd channel each channel gets 250 mS/sec.

So effectively you go from 10 samples per full wave to 5 samples per full wave.

I suggest you disable the sin interpolation to see the real sample points of your wave.

Benno
Top
Post Reply

Return to “USB PC Oscilloscopes”