User Manual

Spectrum Analysis
R&S
®
Scope Rider RTH
106User Manual 1326.1578.02 ─ 08
● Chapter 2.4, "Acquisition Control", on page 43
2. To adjust the instrument settings to the current input signal automatically, press
AUTOSET.
3. Select the "FFT" mode.
4. Select the "Frequency Span" setting and determine which sample frequency you
require ("Max" is the highest).
5. Select the "Window" type according to the signal characteristics that are most rele-
vant for your measurement task (see "Window type" on page 107).
6. Select the "Channel Bandwidth" setting and define the frequency limit of the spec-
trum diagram. Frequencies above the selected limit are removed to reduce noise at
different levels.
7. To switch to a logarithmic frequency scaling, select "X-Scaling": "Logarithmic".
8. To start and stop FFT analysis, press the RUN STOP key.
5.1.4 FFT Mode Settings
Access: "FFT" menu
Additional settings for horizontal (time) scaling and data acquisition are available for
FFT mode and directly accessible via the FFT menu. For a description, see:
●
"Time Scale" on page 43
●
"Acquisition Mode" on page 44
●
"Sampling Rate C1 - C4" on page 45
Furthermore, the history function can be used to perform FFT analysis on stored data,
see Chapter 3.7, "History (Option R&S RTH-K15)", on page 92.
CH <N>....................................................................................................................... 106
Frequency Span..........................................................................................................107
Window type................................................................................................................107
Channel Bandwidth..................................................................................................... 108
X-Scaling.....................................................................................................................108
Sample Frequency...................................................................................................... 108
CH <N>
Selects the channel for which the captured data is analyzed in FFT mode. FFT analy-
sis can be performed on all channels simultaneously.
Remote command:
SPECtrum:SOURce on page 304
FFT Mode