Analyze Wavefor
morTraceData
Taking Automatic Measurements in the Frequency Domain
To take an automatic measurement in the frequency domain:
1. Push Measure.
2. Push Domain to select Frequency.
Domain
Time
Frequency
Select
Measure-
ment
None
3. Push Select Measurement.
4. Choose the
measurement of interest from
the side menu.
Select
Measure-
ment
None
Channel p
ower: The total power within the
bandwidth, defined by the Channel Width.
Channel
Power
Adjacent channel power ratio: The power in the
main cha
nnel and the ratio of channel power to
main power, for the upper and lower halves of
each adjacent channel.
Adjacent
Channel
Power
Ratio
Occupied bandwidth: The bandwidth that
contains the specified % of power within the
analys
is bandwidth.
Occupied
Bandwi
dth
As you select each frequency measurem ent, on s creen help will appear to explain the purpose of that measurement.
Alowe
r-bezel Configure menu item will appear. After you press Configure and set the measurement parameters in
the resulting side-bezel menu, the oscilloscope will automatically set the span. When the R F measurements are on,
the Auto detection method will set all frequency domain traces to the Average detection method. This provides optimal
meas
urement accuracy.
120 MDO4000 Series Oscilloscopes User Manual