I recently upgraded to the MSOX2024A and am getting familiar with the scope. My only DSO comparison is to my Rigol DS1102D. I noticed in the Agilent 30-day Training Signals trial, that on measurements there seems to be much more cursor 'jiggle' particularly on the X axis (Freq) and much more than I have seen on my Rigol. The Rigol measurement function can read out Freq to two significant digits like the MSOX2024A. Using the MSOX2024A wave gen with a 10.00Mhz signal, it jiggles from 9.95-10.05. I thought maybe the problem was the Wave Gen option but I took a high-imp 10.0000000 Mhz signal (from a GPS-Rb locked HP SigGen) and its reads a rock steady 10.00 Mhz on the Rigol while it bounces around on on the MSOX2024A. The Rigol is in same normal capture mode as the 2000x. Is this normal behaviour for the MSOX2024A?
thanks
Jerry
thanks
Jerry
This is not instability. Look up the specs of the wavegen. It has 0.5nsecs jitter.
Jitter is just like noise.
It adds/subtracts to your waveform period (T+/-Jitter). If you do the math for a 10MHz wave -
Period T = 100nSecs. With Jitter the period will be 100.5nsecs and 99.5nsecs
This gives a frequency of 9.95MHz and 10.05MHz, which is what the MSO is displaying.
The RIGOL is a less accurate instrument.