Measurements
R&S
®
RTO6
333
User Manual 1801.6687.02 ─ 05
Meas. type
Description/Result
Noise (RMS)
Quadratic mean of the noise of eye top and eye base
Noise (RMS) = (
σ
top +
σ
base)/2
S/N ratio
Signal-to-noise ratio
SNR = 10 * log (Eye amplitude / Noise RMS)
Duty cycle distortion
Duty cycle distortion = 20 * log (Eye amplitude / Noise RMS)
Eye rise time
Duration for signal to rise from 10% to 90% of the high signal level
Eye fall time
Duration for signal to fall from 90% to 10% of the high signal level
Eye bit rate
Frequency between two crossings
Eye amplitude
Eye top - Eye base
Jitter (peak to peak)
Average of the jitter for both crossing points.
Jitter = (
σ
cro
σ
crossing2) / 2
6σ
Jitter (6*σ)
Jitter (6*σ) = Jitter * 6
Jitter (RMS)
Quadratic mean of the jitter at both crossing points
Crossing points (%)
Percentage of points crossing the eye
8.2.6.2
Settings for eye diagram measurements
Access: [Measure] > "Setup" tab > "Eye" category
Eye diagram measurements are only available for sources in the time domain.
Automatic measurements
