RF Measurements > Spurious
Ranges Tab
Changing the Range Start and Stop Frequencies
To change the range start and stop frequencies, edit the Spurious Frequency Plan:
1.
Click the
Edit
button on the
Settings
>
Range
tab.
2.
Click the
Enabled
box for a range to take measurements in the range.
3.
Click on the frequency setting to change it. Type in a number for the frequency and a letter as a
multiplier, then press
Enter
on the front panel. You can use k, m, or g to set the frequency multiplier.
4.
Click
OK
to save your changes.
You can enable a range on the Ranges control panel tab by selecting the range from the Range drop-down
list and clicking the Enabled check box. If you need to change the frequency of a range, you must edit
the spurious frequency plan using the Edit button.
Specifying Spur Requirements
A spur is a signal peak that exceeds both the Threshold and Excursion settings on the Ranges tab. The
Threshold and Excursion settings are absolute values; they are not calculated relative to a reference. The
Threshold and Excursion settings are speci
fi
c to the selected range. If you want to use different settings for
spurs in different ranges, you have to set the values separately for each range. The Excursion control is
used to avoid interpreting a single spur as multiple narrower spurs by requiring the amplitude to drop by
the Excursion amount between spurs. Raising the Threshold value means that fewer, larger signals will
be identi
fi
ed as spurs.
To specify the spur requirements for a range:
1.
Select the
Range
for which you want to specify the spur requirements.
2.
Set the
Threshold
value.
3.
Set the
Excursion
value.
RSA6100A Series Real-Time Spectrum Analyzers Help
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