Agilent Technologies E4406A, User Manual

Page: 117 / 230

Chapter 4 117
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 or 10 Hz resolution.
• Chan Pwr Span - Allows you to set the frequency span for the
channel power measurement. The range is 1.626 to 10 times the
integration bandwidth but limited up to 10 MHz with 1 or 10 Hz
resolution. This span is used for the current
Integ BW
setting. Since
Chan Pwr Span
is coupled to
Integ BW
, if you change the integration
bandwidth setting, the channel power span setting changes by a
proportional amount until a limit value is reached.
Table 4-2 Channel Power Measurement Defaults
Measurement Parameter Factory Default Condition
Meas Setup:
Avg Number 20 On
Avg Mode Repeat
Integ BW 1.23000 MHz
Chan Power Span 2.00000 MHz
Advanced
Sweep Time 68.27
µ
s Auto
Data Points 512 Auto
Trig Source Free Run (Immediate)