Technical data

Chapter 16 445
Spectrum Analyzer
Using the Occupied BW Measurement
Spectrum Analyzer
Performing a Basic Occupied BW Measurement
NOTE The E7495A/B defaults to Average (RMS) detection to measure the occupied
bandwidth power. Average (RMS) detection gives the most accurate results, so the
default detector setting should therefore be maintained for OBW measurements.
Sample detection will give similar results to the Average (RMS) detection, although
the results will be less repeatable. Peak and Negative Peak detection will give higher
and lower results, respectively, from the actual power.
To reproduce repeatable power readings, use the default Average (RMS) detector. In
addition, you should use Running Average or Group Average with 50 or more
averages. For more details on averaging, see “Setting Average, Sweep, and Restart”
on page 423.
Step Notes
1 Select Spectrum Analyzer.
a.
Mode
b. [Spectrum Analyzer/Tools]
c. [Spectrum Analyzer]
2 Enter the channel standard.
a. [Chan Std]
b. Select the standard using the up and
down arrow buttons.
c. [Select]
d. On [Units] select
Chan.
Each time you press the [Units]
menu key, the selected option
changes.
3 Enter the channel number.
a. [Channel]
b. Enter the channel number using the
numeric keypad.
c. Select [Fwd] or [Rev].