John Philip Perez

Are the TDP1500 / TDP1000 differential probes, Active probes? or Passive Probes?
If Passive, can you offer us Active Probes from TEK's lineup for us to choos.
Thank you :) 

Thank you very much for the information Afonso. It helps solve the issues at hand. Greatly appreciated! :)

Hi Afonso,
Thank you.

The same plot/measurement I've got as before when I use your calculation. I think your preparation codes before capturing are the same as mine and I think somewhere in the codes differ also. If you dont mind me asking what is the inside of "query_binary_values" in Line67 have?. I think there is somewhere in our codes that is different from yours. 

Also, at command "DATa:ENCdg", we are using "RPB" in all our data capturing command while yours is "SRI", apparently when using "SRI" and "RIB" we can get correct measurement. Other selection like the "RPB" and others have given me incorrect measurements(the same as the picture in my first inquiry message). Can you please give us a brief description on these modes?

To confirm, I am using MSO54B 5-BW-500.

As per datasheet of 5/6 Series MSO instruments, "the value of YOFF is always 0.0" and "the value returned is always 0.0 as the offset is combined the :YZEro value". So in this case how do we differentiate yoff and yzero values in converting waveform data from the instrument into numerical data?
Calculations from datasheet : Yn = YZEro + YMULt(Yn - YOFf) , having the conditions stated above, this calculation will produce an incorrect results for these kind of oscilloscope series. 
Other version of Oscilloscope can use the equation without problem since YOFF and YZERO are not incorporated with each other.
Is their a workaround with this issue in the 5/6 MSO Series?
More detailed info on the attached file.