Measurement setups Select a communications measurement
Jitter Root Mean Square
Jitter RMS is the RMS value of the edge jitter in the current horizontal units.
Jitter RMS = TCross 1sigma
Jitter 6 Sigma
Jitter 6 sigma is six times the RMS value of the edge jitter in the current horizontal units.
Jitter 6 sig
ma = 6 × (JitterRMS)
Noise Peak
-to-Peak
Noise p-p is the peak-to-peak value of the noise of the top or base of the signal as specified by you.
To ensure accurate noise values, be sure to set the signal type to Eye when measuring an Eye signal.
Noise Pk-Pk = PToppk-pk or PBasepk-pk
Noise Root Mean Square
Noise RMS is the RMS value of the noise of the top o r base of the signal as speci fi ed by you.
To ens
ure accurate noise values, be sure to set the signal type to Eye when measuring an Eye signal.
Noise RMS = PTopsigma or PBasesigma
Signal to Noise Ratio
S/N ratio is the ratio of the signal amplitude to the noise of the top or base of the signal as specified
by you.
S/N Ratio = (Ptop – Pbase)/(PTopsigma or PBasesigma)
Duty Cycle Distortion
Duty cycle distortion is the peak-to-peak time variation of the first eye crossing measured at the
MidRef as a percent of the eye period.
DCD(sec) = 100% × TDCDp-p/(TCross2mean – TCross1mean)
Quality Factor
Quality factor is the ratio of eye size to noise.
Quality Factor = (PTopmean – PBasemean)/(PTopsigma + PBasesigma)
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 281
To Next Page
Loading...
Need help?
General
