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138 Chapter 4
Making Measurements
Making the Power Stat CCDF Measurement
Changing the Measurement Setup
The next table shows the factory default settings for power statistics
CCDF measurements.
Make sure the
Power Stat CCDF measurement is selected under the
Measure menu. Press the Meas Setup key to access the menu which
allows you to modify the trigger source for this measurement as
described in “Measurement Setup” on page 90. In addition, the
following parameters can be modified.
•
Meas BW - Allows you to set the measurement bandwidth according
to the channel bandwidth. The range is 10.000 kHz to 6.70000 MHz
with 0.1 kHz resolution.
•
Counts - Allows you to set the accumulated number of sampling
points for data acquisition. The range is 1.000 kpoints to
2.000 Gpoints with 1 or 10 kpoints resolution. While this key is
activated, enter a value from the numeric keypad by terminating
with one of the unit keys shown.
•
Meas Interval - Allows you to specify the time interval over which the
measurement is made. The range is 100.0
µs to 10.00 ms with 1 µs
resolution.
Table 4-6 Power Statistics CCDF Measurement Defaults
Measurement Parameter Factory Default Condition
Meas Setup:
Meas BW 5.00000 MHz
Counts 10.0000 Mpoints
Meas Interval 1.000 ms
Trig Source Free Run (Immediate)
Display:
Ref Trace Off
Gaussian Line On