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Chapter 12
Optimizing Measurements
Expanding the Dynamic Range
Expanding the Dynamic Range
The dynamic range is the finite difference between the maximum input power level and the
minimum measurement power level (noise floor) of the analyzer. In evaluating a
characteristic accompanied by a large change in the amplitude (the pass band and stop band
of a filter, for example), it is important to increase the dynamic range.
Lowering the receiver noise floor
Lowering the noise floor of the receiver enables you to expand the dynamic range. The
following methods can be used to lower the receiver noise floor.
•
“Narrowing the IF bandwidth” on page 394
•
“Turning on Sweep Averaging” on page 395
Narrowing the IF bandwidth
Narrowing the receiver IF bandwidth enables you to reduce the effect of random noise on
measurements. Narrowing the IF bandwidth to 1/10 the original bandwidth causes the
receiver noise floor to decrease by 10 dB.
Figure 12-1
Effects of narrowing the IF bandwidth
To specify the IF bandwidth, follow the steps described below.
Step 1.
Press
or
to select a channel on which to specify the IF
bandwidth.
Step 2.
Press
.
Step 3.
Press
IF Bandwidth
.
Step 4.
Change the IF bandwidth in the data entry area.
Содержание E5070B
Страница 6: ......
Страница 30: ...24 Contents ...
Страница 34: ...28 Chapter1 Precautions Before contacting us ...
Страница 286: ...280 Chapter6 Data Analysis Using the Equation Editor ...
Страница 430: ...424 Chapter12 Optimizing Measurements Performing a Segment by Segment Sweep segment sweep ...
Страница 479: ...473 14 Controlling E5091A 14 Controlling E5091A This chapter explains how to control the E5091A multiport test set ...
Страница 538: ...532 Chapter15 Measurement Examples Executing Power Calibration ...
Страница 604: ...598 AppendixA Manual Changes Manual Changes Figure A 12 Two port Touchstone file Figure A 13 Three port Touchstone file ...
Страница 634: ...628 AppendixB Troubleshooting Warning Message ...
Страница 732: ...726 AppendixD Softkey Functions Trigger Menu ...
Страница 740: ...734 AppendixE General Principles of Operation Data Processing ...
Страница 760: ...754 AppendixF Replacing the 8753ES with the E5070B E5071B Comparing Functions ...