
I
Optimizing Measurements
Increasing Network Analyzer Dynamic Range
Changing Measurement
In averaging mode, the analyzer measures each frequency point once per
Averaging
sweep and averages the current and previous trace up to the averaging factor
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
l
time for each individual sweep remains the same, but
l
total time to update the trace increases.
Averaging is better than system bandwidth reduction at minimizing very
low
frequency noise.
Press
.
2. Enter a value followed by
Press
ON
.
N O T E
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
where is the averaging factor for measurement channel 1, and
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.
5-12
Содержание 8712C
Страница 1: ...I I User s Guide HP 8712C and HP 8714C RF Network Analyzers I ...
Страница 17: ...I 1 Installing the Analyzer ...
Страница 35: ...I 2 Getting Started ...
Страница 54: ...I 3 Making Measurements ...
Страница 81: ......
Страница 119: ...4 Using Instrument Functions ...
Страница 182: ...Using Instrument Functions Customizing the Display Figure 4 24 Expanded Display 4 64 ...
Страница 223: ...5 Optimizing Measurements ...
Страница 244: ...6 Calibrating for Increased Measurement Accuracy ...
Страница 280: ...7 Automating Measurements ...
Страница 298: ......
Страница 362: ...8 Front Rear Panel ...
Страница 373: ......
Страница 381: ......
Страница 386: ... 9 w I Suftkey Reference ...
Страница 477: ...I 10 Specifications and Characteristics ...
Страница 501: ...11 Safety and Regulatory Information ...
Страница 508: ...I 12 preset State and Memory Allocation ...
Страница 527: ...Index ...
Страница 559: ...Y X 9 91 YYW m m IiH rn 9 91 Z zeroing detectors 6 15 Index 33 ...