
ES User’s Guide
5-11
Optimizing Measurements
Increasing Network Analyzer Dynamic Range
Changing
Measurement
Averaging
In averaging mode, the analyzer measures each frequency point once per
sweep and averages the current and previous trace up to the averaging
factor specified by the user. The instrument computes each data point
based on an exponential average of consecutive sweeps weighted by the
user-specified averaging factor.
As the averaging factor is increased:
• signal-to-noise ratio increases,
• time for each individual sweep remains the same, but
• total measurement time increases.
Averaging is better than system bandwidth reduction at minimizing very
low frequency noise.
1. Press
and enter an averaging factor that
is less than the value displayed on the analyzer screen, followed by
.
2. Press
.
NOTE
When averaging is on, there is an indicator in the lower right corner of
the analyzer's display. The display is in the form
Avg x,y
where "x" is
the averaging factor for measurement channel 1, and "y" is the averaging
factor for measurement channel 2. If only one measurement channel is
on, the averaging indicator only displays that channel's averaging factor.
AVG
Average Factor
ENTER
Average on OFF
Summary of Contents for HP 8712ES
Page 8: ...viii ES User s Guide ...
Page 17: ...ES User s Guide 1 1 1 Installing the Analyzer ...
Page 34: ...1 18 ES User s Guide Installing the Analyzer Preventive Maintenance ...
Page 35: ...ES User s Guide 2 1 2 Getting Started ...
Page 52: ...2 18 ES User s Guide Getting Started Performing the Operator s Check ...
Page 53: ...ES User s Guide 3 1 3 Making Measurements ...
Page 135: ...ES User s Guide 4 1 4 Using Instrument Functions ...
Page 159: ...ES User s Guide 4 25 Using Instrument Functions Using Markers Figure 4 15 Delta Marker Mode ...
Page 165: ...ES User s Guide 4 31 Using Instrument Functions Using Limit Testing Figure 4 16 Limit Lines ...
Page 224: ...4 90 ES User s Guide Using Instrument Functions Using an External VGA Monitor ...
Page 225: ...ES User s Guide 5 1 5 Optimizing Measurements ...
Page 246: ...5 22 ES User s Guide Optimizing Measurements Measuring Devices with Long Electrical Delay ...
Page 247: ...ES User s Guide 6 1 6 Calibrating for Increased Measurement Accuracy ...
Page 281: ...ES User s Guide 7 1 7 Front Rear Panel ...
Page 306: ...7 26 ES User s Guide Front Rear Panel Line Module ...
Page 307: ...ES User s Guide 8 1 8 Hardkey Softkey Reference ...
Page 410: ...8 104 ES User s Guide Hardkey Softkey Reference Z ...
Page 411: ...ES User s Guide 9 1 9 Specifications ...
Page 469: ...ES User s Guide 10 1 10 Safety and Regulatory Information ...
Page 475: ...ES User s Guide 10 7 Safety and Regulatory Information Regulatory Information ...
Page 476: ...10 8 ES User s Guide Safety and Regulatory Information Regulatory Information ...
Page 477: ...ES User s Guide 11 1 11 Factory Preset State and Memory Allocation ...