
Compensating for Phase Shift in Measurement
Setups
The port extension feature is used to compensate for the phase shift caused
by the insertion of cables, adapters, and
into the measurement path.
Port extension is particularly useful if you are unable to perform a calibration
directly at your DUT. See Figure 5-2 for this discussion. For example, you
might have a test
with type-N connectors, where you can easily
perform an accurate calibration. However, calibrating at this connector does
not remove the electrical length within the fixture. The desired calibration
reference plane is on the other side of the test fixture where you may have
device
connectors. Port extension lets you compensate for this delay
within your fixture, thereby removing the phase shift that it causes.
NETWORK ANALYZER
R E F L E C T I O N
I I
RF OUT
RF
IN
Figure 5-2. Compensating for Test Fixture Delay
5-19
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 ...