User manual

Measurements
R&S
®
RTO
140User Manual 1316.0827.02 ─ 06
Meas. type Description/Result
12 Mean The weighted arithmetic average of the histogram
13 σ (S-dev) Standard deviation of the sample numbers
14 Mean ±σ The range between (mean value + standard deviation) and (mean value -
standard deviation)
15 Mean ±2*σ The range between (mean value + 3 * standard deviation) and (mean value -
2 * standard deviation)
16 Mean ±3*σ The range between (mean value + 3 * standard deviation) and (mean value -
2 * standard deviation)
17 Marker + Probability % The marker value (according to the selected probability domain marker type)
plus the defined limit.
Note that the value is restricted to the histogram range.
18 Marker - Probability % The marker value (according to the selected probability domain marker type)
minus the defined limit.
Note that the value is restricted to the histogram range.
See also: chapter 5.2.2.4, "Creating a Histogram ", on page 145.
Rough jitter evaluation using a histogram
You can use a horizontal histogram to perform a rough jitter measurement. Define a
histogram for a narrow amplitude range close to the trigger time. The "Max-Min" value
indicates the peak jitter, while the "StdDev" value indicates the RMS jitter.
5.2.1.5 Spectrum Measurements
Spectrum analysis determines the frequencies of a given input signal over time. Various
measurements can then be performed based on the signal spectrum.
The default measurement on a spectrum is a "Channel Power" measurement, which
provides the integrated power over the sample values as a result.
Automatic Measurements