R&S esu, Quick Start Manual, Page: 123 / 223

Quick Start Guide 1302.6163.62 - 04 5.19
R&S ESU Basic Measurement Examples
Measuring a Sinusoidal Signal
5.3.2 Measuring the Signal Frequency using the Frequency Counter
The built-in frequency counter makes it possible to measure the frequency more precisely
than measuring it with the marker. The frequency sweep is stopped at the marker, and the
R&S ESU measures the frequency of the signal at the marker position.
In the following example, the frequency of the generator at 128 MHz is shown by using the
marker.
1. Reset the instrument.
➢
Press the PRESET key.
The R&S ESU is in the default state.
➢
Press the SPECTRUM hotkey.
2. Set the center frequency and the span.
➢
Press the FREQ key and enter 128 MHz .
The center frequency of the R&S ESU is set to 128 MHz.
➢
Press the SPAN softkey and enter 1 MHz .
The frequency span of the R&S ESUs set to 1 MHz.
3. Activate the marker
➢
Press the MKR key.
The marker is activated and set to the signal maximum. The level and the frequency of
the marker are displayed in the marker information field.
4. Activate the frequency counter.
➢
Press the SIGNAL COUNT softkey in the marker menu.
The result of frequency counting is displayed in the selected resolution (1 kHz in the
default state) in the marker field at the top edge of the screen.
5. Set the resolution of the frequency counter to 1 Hz.
➢
Go to the right-hand side menu of the marker menu by pressing the NEXT key.
➢
Press the CNT RESOL 1 Hz softkey.