The Spectrum Application (RF Measurements)
R&S
®
FPL1000
111
User Manual 1178.3370.02 ─ 11
2. Set the center frequency to
128
MHz
.
3. Set the frequency span to
0
Hz
or select "Zero Span".
4. Set the sweep time to
2.5
ms
.
5. Set the RBW to
3
MHz
.
6. Set the reference level to
-24
dBm
and the display range to linear ([AMPT] > "Scale
Config" > "Scaling": "Linear Percent").
7. Set the scaling unit to Volt ([AMPT] > "Amplitude Config" > "Unit": "V").
8. Define triggering in response to the AF signal using the video trigger to produce a
static image.
a) Press the [TRIG] key.
b) Select "Video".
c) Set the "Trg/Gate Level" to
50%
.
The trigger level is displayed as a horizontal line across the entire measurement
diagram. The R&S
FPL1000 displays the 1
kHz AF signal as a static image in zero
span.
Figure 6-12: Measurement of the AF signal of a carrier that is AM-modulated with 1 kHz
9. Activate the internal AM demodulator to output the audio signal.
a) Press the [MKR FUNC] key.
Measurements and Results
