Quick Start
R&S
®
ESR
115User Manual 1175.7068.02 ─ 12
i) Using the rotary knob, set the reference level such that the filter edge at the
center frequency intersects the -10 dB level line.
The filter edge of the 300 kHz filter is displayed. This corresponds to the
demodulator characteristic for FM signals with a steepness of approx. 18
dB/140 kHz. This can be verified using the marker and delta marker.
Figure 3-20: Display of the filter edge of the 300 kHz filter as an FM discriminator character-
istic
6. Set the FM deviation to 50 kHz on the signal generator.
7. Set the span to 0 Hz on the R&S ESR.
a) Press the [SPAN] key.
b) Press the "Zero Span" softkey.
The demodulated FM signal is displayed. The signal crosses the screen contin-
uously.
8. Establish a stable display using video triggering.
a) Press the [TRIG] key.
b) Press the "Trg/Gate Source" softkey and select "Video" using the arrow keys.
Basic Measurement Examples
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