Chapter 4
113
Making Measurements
Making the Adjacent Channel Power (ACP) Measurement
Changing the View
The
View/Trace
key accesses the menu to select the desired view of the
measurement.
• Bar Graph - In the factory default condition, 5 of the total
integration power levels, centered at the carrier frequency and
±
750.0 kHz and
±
1.98 MHz offset frequencies, for example, are
shown in the graph window. The corresponding measured data is
shown in the text window. Depending on the
Meas Type
setting, one
of the two following displays is obtained:
Bar Graph (Total Pwr Ref)
- A histogram of powers referenced
to the total power
Bar Graph (PSD Ref)
- A histogram of powers referenced to the
mean power spectral density of the carrier in dBm/Hz
• Spectrum - In the factory default condition, the frequency spectrum
with the FFT sweep type is displayed with the bandwidth marker
lines in the graph window. The corresponding measured data in the
text window is the total integration power levels, in dBc and dBm,
within the defined bandwidth as shown in the figure below.
Depending on the
Meas Type
setting, one of the two following
displays is obtained:
Spectrum (Total Pwr Ref)
- A spectrum display referenced to
the total power
Spectrum (PSD Ref)
- A spectrum display referenced to the
mean power spectral density of the carrier in dBm/Hz
You can improve the update speed of the displayed data values by
turning off the spectrum trace in
Meas Setup
.
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Страница 138: ...138 Chapter4 Making Measurements Front Panel Test ...
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Страница 214: ...214 Chapter6 If You Have a Problem Returning Your Instrument to Agilent Technologies ...
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