CMU RF: Analyzer/Generator Menu
1100.4903.12 4.33 E-10
4 Functions
RF Measurements (RF)
This section describes the measurement and configuration menus of function group RF. It is organized
as follows:
• Configuration of the RF output signal and RF analyzer settings (Analyzer/Generator).
• Measurement menus (Power and Spectrum): Measurement menus, results, configuration menus.
• General configurations (Connection Control).
The most important menus of the RF function group are shown in an overview at the end of chapter 3 in
the present CMU manual.
Analyzer/Generator Menu
The main menu Analyzer/Generator configures the RF generator and analyzer and displays the power
of the received RF signal.
The measurement control softkey Analyzer Power changes to Power Meter Freq. Sel., depending on
the application selected. This softkey controls the measurement, indicates its status (RUN | HLT |
OFF) and opens the configuration menu Analyzer/Generator Configuration. The hotkeys associated
to the measurement control softkey define the scope of the Analyzer/Generator measurement.
The other softkeys on the right side are combined with various hotkeys (e.g. the hotkeys Frequency
and RBW belong to the softkey Analyzer Settings). The softkey/hotkey combinations provide test
settings and switch over between different measurements.
The RF function group provides different types of power measurements. All power measurements are
performed at fixed frequency. They differ in their measurement principle and filter settings, in the statis-
tical evaluation and the display of results.
Analyzer Power
Analyzer Power is an application in the Analyzer/Generator menu. The measurement yields
the average power of an RF input signal over a sweep; see section Measurement Results
on p. 4.37 ff.
A wide range of measurement filters including a wideband filter is available. The accuracy of
the Analyzer Power (including the wideband power) measurement is enhanced if the center
frequency of the analyzer matches the frequency of the measured signal. The characteris-
tics of the Analyzer Power measurement makes it particularly suitable for the analysis of
CW signals where no measurement curves are needed.
Power Meter
Freq. Sel.
Power Meter Freq. Sel. is the second application in the Analyzer/Generator menu. The
measurement yields the average, minimum and maximum power of an RF input signal over
a sweep plus a statistical evaluation over several consecutive sweeps; see section
Measurement Results on p. 4.37 ff.
A wide range of measurement filters including the filters specified for TDMA and CDMA
conformance tests is available. The measurement is always frequency selective; no wide-
band filter is provided. The measurement time depends on the filter bandwidth but never
exceeds the order of magnitude of 100 ms for a single sweep. The frequency of the RF
signal is also measured, provided that is close enough to the selected measurement fre-
quency.
The characteristics of the Power Meter Freq. Sel measurement makes it particularly suit-
able for the analysis of CW signals where no measurement curves are needed.
Pow. Meter
Wideband
Pow. Meter Wideband is displayed in the RF connector tab of the Connection Control
menu. The measurement is performed at the RF Frontend of the CMU and yields the peak
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