Reducing Noise; To Activate Averaging; To Change System Bandwidth - Agilent Technologies 8753ET User Manual

Reducing Noise

You can use two analyzer functions to help reduce the effect of noise on the data trace:
• activate measurement averaging
• reduce system bandwidth
• use direct sampler access configurations (Option 014 Only)

To Activate Averaging

The noise is reduced with each new sweep as the effective averaging factor increments.
1. Press
Avg AVERAGING FACTOR
2. Enter a value followed by
3. Press
AVERAGING ON
Refer to "Averaging" on page 7-36

To Change System Bandwidth

By reducing the system bandwidth, you reduce the noise that is measured during the sweep. While
averaging requires multiple sweeps to reduce noise, narrowing the system bandwidth reduces the noise on
each sweep, however, the sweep will be slower.
1. Press
Avg IF BW
2. Enter the IF bandwidth value that you want, followed by
Narrower system bandwidths cause longer sweep times. When in auto sweep time mode, the analyzer uses
the fastest sweep time possible for any selected system bandwidth. Auto sweep time mode is the default
(preset) analyzer setting.
NOTE Another capability that can be used for effective noise reduction is the marker statistics
function, which computes the average value of part or all of the formatted trace.
If your instrument is equipped with Option 014 (High Power System), another way of
increasing dynamic range is to increase the input power to the test device using a booster
amplifier.
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for more information.
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Optimizing Measurement Results
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Reducing Noise

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