Measuring The Level And Frequency Using Markers - R&S ESR Series User Manual

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R&S ESR
High input values
If levels higher than +30 dBm (=1 W) are expected or are possible, a power attenuator
must be inserted before the RF input of the analyzer. If this is not done, signal levels
exceeding 30 dBm can damage the RF attenuator or the input mixer. The total power
of all occuring signals must be taken into account.
Test setup
●
Connect the RF output of the signal generator to the RF input of R&S ESR.
Table 3-4: Signal generator settings (e.g. R&S SMU)
Frequency
Level
3.5.1.1

Measuring the Level and Frequency Using Markers

The level and frequency of a sinusoidal signal can be measured easily by using the
marker function. The R&S ESR always displays its amplitude and frequency at the
marker position. The frequency measurement uncertainty is determined by the fre-
quency reference of the R&S ESR, the resolution of the marker frequency display and
the number of sweep points.
1. Reset the instrument by pressing the [PRESET] key.
2. Select "Spectrum" mode.
3. Connect the signal to be measured to the RF INPUT analyzer input on the instru-
ment front panel.
4. Set the center frequency to 128 MHz.
a) Press the [FREQ] key.
b) In the dialog box, enter 128 using the numeric keypad and confirm the entry
5. Reduce the frequency span to 1 MHz.
a) Press the [SPAN] key.
b) In the dialog box, enter 1 using the numeric keypad and confirm the entry by
Note: Coupled settings. When the frequency span is defined, the resolution band-
width, the video bandwidth and the sweep time are automatically adjusted,
because these functions are defined as coupled functions in the presettings.
6. Measure the level and frequency using the marker by pressing the [MKR] key.
The marker is activated and automatically set on the maximum of the trace.
User Manual 1175.7068.02 ─ 12
The dialog box for the center frequency is displayed.
with the MHz key.
pressing the [MHz] key.
Basic Measurement Examples
128 MHz
-30 dBm
Quick Start
92