
5-12
ES User’s Guide
Optimizing Measurements
Reducing Trace Noise
Reducing Trace Noise
To help reduce the effect of noise on the data trace, you can use three
analyzer functions to activate measurement averaging, reduce system
bandwidth, and eliminate spurious responses.
To Activate Averaging for Reducing Trace
Noise
The analyzer uses a weighted running average for averaging. The noise
is reduced with each new sweep as the effective averaging factor
increments.
1. Press
.
2. Enter a value followed by
.
3. Press
.
Averaging is explained more fully in the previous section.
To Change System Bandwidth for Reducing
Trace Noise
By reducing the system bandwidth, you reduce the noise that is
measured during the sweep. However, the decreased bandwidth may
slow down the sweep. While averaging requires multiple sweeps to
reduce noise, narrowing the system bandwidth reduces the noise on each
sweep. See the previous section for a more detailed explanation of system
bandwidth.
Press
or
.
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
analyzer setting.
AVG
Average Factor
ENTER
Average on OFF
AVG
System Bandwidth Narrow 250 Hz
Fine 15 Hz
Содержание HP 8712ES
Страница 8: ...viii ES User s Guide ...
Страница 17: ...ES User s Guide 1 1 1 Installing the Analyzer ...
Страница 34: ...1 18 ES User s Guide Installing the Analyzer Preventive Maintenance ...
Страница 35: ...ES User s Guide 2 1 2 Getting Started ...
Страница 52: ...2 18 ES User s Guide Getting Started Performing the Operator s Check ...
Страница 53: ...ES User s Guide 3 1 3 Making Measurements ...
Страница 58: ...3 6 ES User s Guide Making Measurements Measuring Devices with Your Network Analyzer Figure 3 3 Block Diagram ...
Страница 135: ...ES User s Guide 4 1 4 Using Instrument Functions ...
Страница 146: ...4 12 ES User s Guide Using Instrument Functions Using Markers Figure 4 6 6 dB Bandwidth Marker Search ...
Страница 151: ...ES User s Guide 4 17 Using Instrument Functions Using Markers Figure 4 11 Multi Notch Search Mode ...
Страница 153: ...ES User s Guide 4 19 Using Instrument Functions Using Markers Figure 4 12 Marker Statistics Function ...
Страница 155: ...ES User s Guide 4 21 Using Instrument Functions Using Markers Figure 4 13 Marker Flatness Function ...
Страница 157: ...ES User s Guide 4 23 Using Instrument Functions Using Markers Figure 4 14 RF Filter Statistics Function ...
Страница 159: ...ES User s Guide 4 25 Using Instrument Functions Using Markers Figure 4 15 Delta Marker Mode ...
Страница 165: ...ES User s Guide 4 31 Using Instrument Functions Using Limit Testing Figure 4 16 Limit Lines ...
Страница 183: ...ES User s Guide 4 49 Using Instrument Functions Customizing the Display Figure 4 22 The Display Annotation ...
Страница 187: ...ES User s Guide 4 53 Using Instrument Functions Customizing the Display Figure 4 23 Normal Display ...
Страница 188: ...4 54 ES User s Guide Using Instrument Functions Customizing the Display Figure 4 24 Expanded Display ...
Страница 224: ...4 90 ES User s Guide Using Instrument Functions Using an External VGA Monitor ...
Страница 225: ...ES User s Guide 5 1 5 Optimizing Measurements ...
Страница 246: ...5 22 ES User s Guide Optimizing Measurements Measuring Devices with Long Electrical Delay ...
Страница 247: ...ES User s Guide 6 1 6 Calibrating for Increased Measurement Accuracy ...
Страница 281: ...ES User s Guide 7 1 7 Front Rear Panel ...
Страница 283: ...ES User s Guide 7 3 Front Rear Panel Connectors Connectors Figure 7 1 Analyzer Connectors Front Panel ...
Страница 303: ...ES User s Guide 7 23 Front Rear Panel Line Module Figure 7 11 Power Cable and Line Mains Plug Part Numbers ...
Страница 306: ...7 26 ES User s Guide Front Rear Panel Line Module ...
Страница 307: ...ES User s Guide 8 1 8 Hardkey Softkey Reference ...
Страница 410: ...8 104 ES User s Guide Hardkey Softkey Reference Z ...
Страница 411: ...ES User s Guide 9 1 9 Specifications ...
Страница 469: ...ES User s Guide 10 1 10 Safety and Regulatory Information ...
Страница 475: ...ES User s Guide 10 7 Safety and Regulatory Information Regulatory Information ...
Страница 476: ...10 8 ES User s Guide Safety and Regulatory Information Regulatory Information ...
Страница 477: ...ES User s Guide 11 1 11 Factory Preset State and Memory Allocation ...