Anritsu Spectrum Master MS2720T, User Manual

Page: 294 / 1035

Spectrum Analyzer 2-13 Occupied Bandwidth Measurement
Spectrum Analyzer MG PN: 10580-00349 Rev. H 2-17
4. Press the
Amplitude
main menu key then press the
Reference Level
submenu key to set
the appropriate reference level.
5. Press the
Atten Lvl
submenu key to set the input attenuation level or leave
Auto Atten
set
to
On
.
6. Press the
BW
main menu key to set the resolution bandwidth and video bandwidth if
desired.
7. Press the
Shift
key then the
Measure
(
4
) key. Then press the
Power and Bandwidth
submenu key, and press the
OCC BW
submenu key. Choose the measurement method
(
% Int Pwr
or
> dBc
) by pressing the
Method
submenu key. The selected method is
underlined.
8. Press the dB
c
or
%
submenu keys to adjust the settings as needed. Common values are
99% and 30 dBc.
9. Press the
On/Off
submenu key to start the measurement. An information box will
appear below the graph while occupied bandwidth measurement is on.
Figure 2-10 shows the occupied bandwidth results using the percent of power method on a
WCDMA signal. Occupied Bandwidth is a constant measurement; after it is turned on, it
remains on until it is turned off by pressing the
On/Off
submenu key again. Occupied
bandwidth is calculated at the end of each sweep.
Figure 2-10. Occupied Bandwidth Results Using the % of Power Method
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