Is there something wrong with a Oscar Gomez Fuentes 2Channel oscilloscope

[Neuvos]

Is there something wrong with a Oscar Gomez Fuentes 2Channel oscilloscope or are my devices configured wrong. I have DAQCard-6036E and SCC-2345 with SCC-Ft01 and SCC-A10 modules. The problem is that when I am measuring with A10 it effects to FT01's RMS and DC values. But when I am measuring with Ft01 everything is ok. So what's wrong?? I attached a picture of a front panel.

[Spencer S.]

Neuvos,

Do any of the signals you are measuring have high output impedances (> 1 kOhm)? If so, you may be seeing cross-talk (or ghosting). Below, I have included links to a number of documents that discuss this issue and methods for eliminating it:

Data Acquisition: Troubleshooting Unexpected Voltages or Cross-talk in Analog Input Channels

Using a Unity Gain Buffer (Voltage Follower) with a DAQ Device

Is Your Data Inaccurate Because of Instr
umentation Amplifier Settling Time?

Good luck with your application.

Spencer S.

[Neuvos]

Thanks!
I try to figure out what's the problem, maybe the documents give me a answer.

Neuvos