R&S esu, Quick Start Manual, Page: 121 / 223

Quick Start Guide 1302.6163.62 - 04 5.17
R&S ESU Basic Measurement Examples
Measuring a Sinusoidal Signal
4. Reduce the frequency span (SPAN) to 1 MHz.
➢
Press the SPAN key.
➢
Using the numeric keypad in the input field, enter 1 and confirm the entry with the MHz
key.
5. Measure the level and frequency using the marker and read the results from the
screen.
➢
Press the MKR key.
The marker is activated and automatically jumps to the maximum of the trace.
The level and frequency values measured by the marker are displayed in the marker field
at the top edge of the screen. They can be taken as the measurement result.
The field header indicates the number of the marker (
MARKER 1
) and the trace on which
the marker is located
([T1]
= Trace 1).
5.3.1.2 Increasing the Frequency Resolution
The frequency resolution of the marker is predefined by the measurement point resolution of
the trace. A trace uses 625 measurement points, i.e. when the frequency span is 1 MHz, each
measurement point corresponds to a span of approx. 1.6 kHz. This corresponds to a
maximum uncertainty of 0.8 kHz.
You can increase the measurement point resolution of the trace by reducing the frequency
span.
When the frequency span is defined, the resolution bandwidth ( RES
BW ), the video bandwidth ( VIDEO BW ) and the sweep time ( SWEEP
TIME ) are automatically reset, because these functions are linked in
the preset setting.
When a marker is initially activated, it automatically performs the peak
search function (as shown in the example).
If a marker is already active, press the
PEAK key in the MKR-> menu
in order to set the currently active marker to the maximum of the
displayed signal.