Title: Scope Spec Frequency vs Actual Frequency [Print this page] Author: QMESAR Time: 2018-1-26 11:52 Title: Scope Spec Frequency vs Actual Frequency Hi Hantek Team.
Please help me understand the following.
I have the 6254BD PC Scope with the spec from your Datasheet Frequency is 250Mhz and 1 Ga Samples per second,
Now how do I calculate the maximum frequency of a signal that I can measure with the scope ? If 1 Channel is used and when 4 channels are used .
In my opinion it would be something like 50Mhz when 4 channels are used ,
Please can you help here with the technical information how to calculate the efferctive measuring frequency of a channel .
I appreciate your information
Regards
Author: amy Time: 2018-1-29 10:00
No matter how many channels you open, the bandwidth of each channel is 250MHz.
But when you open four channels, the sampling rate of each channel is reduced from 1GSa/s to 250MSa/s.
Collect 3 to 5 points in each period, it may draw a correct waveform.
If you use 250MSa/s sampling rate to collect 250MHz waveform, only one point is collected for each cycle. The waveform will be seriously distorted. Author: QMESAR Time: 2018-1-29 13:24
Thank you Amy That is as I understand it as well
4 Channels opened sample rate per channel is 250MS/s and if you need at least 5 points so it is 50MHz signal when using 4 CH
that is fine I will never measure 4 CH 50Mhz per channel
Welcome to Electronic Engineer Discuss (https://www.eediscuss.com/)