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Chapter 4 133
Making Measurements
Making the Channel Power Measurement
Changing the Measurement Setup
The next table shows the factory default settings for channel power
measurements.
NOTE Parameters under the Advanced key seldom need to be changed. Any
changes from the factory default values may result in invalid
measurement data.
Make sure the
Channel Power measurement is selected under the
MEASURE menu. The Meas Setup key accesses the menu which allows
you to modify the average number and average mode for this
measurement.
The following parameters can be changed according to your
measurement requirement:
•
Integ BW - Allows you to specify the integration bandwidth in which
the power is measured. The range is 1.000 kHz to 10.0000 MHz with
1 Hz resolution. Since
Integ BW is coupled to Chan Power Span in the
factory default condition, if you change the integration bandwidth
setting, the channel power span setting changes by a proportional
amount, 1.626 times the integration bandwidth, until a limit value is
reached.
Table 4-5 Channel Power Measurement Defaults
Measurement Parameter Factory Default Condition
Meas Setup:
Avg Number 20; On
Avg Mode Repeat
Integ BW
a
a. The Integ BW setting proportionally changes the Chan Power
Span setting up to 10 MHz.
1.23000 MHz
Chan Power Span
a
2.00000 MHz
Advanced
Sweep Time 68.0
µs; Auto
Data Points 512; Auto
Res BW (grayed out) 27.857 kHz (grayed out)
Trig Source Free Run (Immediate)