
ET User’s Guide
6-3
Calibrating for Increased Measurement Accuracy
Measurement Calibration Overview
Figure 6-1
Systematic Measurement Errors
Frequency response errors (transmission and reflection tracking) are
caused by differences between the frequency response of the receivers
used during ratio measurements.
Leakage errors result from energy leakage between signal paths. In
transmission measurements, this leakage is due to crosstalk between
test ports. In reflection measurements, it is due to imperfect directivity of
internal signal-separation devices.
Mismatch errors are due to the fact that the analyzer’s port
impedances are not exactly equal to the system impedance across the
frequency range. Source match errors are produced on the source
(network analyzer RF OUT) side of the DUT; load match errors on the
load (network analyzer RF IN) side. If the DUT is not connected directly
to the port, the mismatch errors due to cables, adapters, etc. are
considered part of the source or load match errors.
Figure 6-2
Mismatch Errors in a Forward Reflection Measurement
Summary of Contents for HP 8712ET
Page 8: ...viii ET User s Guide ...
Page 17: ...ET User s Guide 1 1 1 Installing the Analyzer ...
Page 34: ...1 18 ET User s Guide Installing the Analyzer Preventive Maintenance ...
Page 35: ...ET User s Guide 2 1 2 Getting Started ...
Page 52: ...2 18 ET User s Guide Getting Started Performing the Operator s Check ...
Page 53: ...ET User s Guide 3 1 3 Making Measurements ...
Page 118: ...3 66 ET User s Guide Making Measurements Measuring Impedance Magnitude ...
Page 119: ...ET User s Guide 4 1 4 Using Instrument Functions ...
Page 143: ...ET User s Guide 4 25 Using Instrument Functions Using Markers Figure 4 15 Delta Marker Mode ...
Page 149: ...ET User s Guide 4 31 Using Instrument Functions Using Limit Testing Figure 4 16 Limit Lines ...
Page 207: ...ET User s Guide 5 1 5 Optimizing Measurements ...
Page 226: ...5 20 ET User s Guide Optimizing Measurements Measuring Devices with Long Electrical Delay ...
Page 227: ...ET User s Guide 6 1 6 Calibrating for Increased Measurement Accuracy ...
Page 266: ...6 40 ET User s Guide Calibrating for Increased Measurement Accuracy Checking the Calibration ...
Page 267: ...ET User s Guide 7 1 7 Front Rear Panel ...
Page 292: ...7 26 ET User s Guide Front Rear Panel Line Module ...
Page 293: ...ET User s Guide 8 1 8 Hardkey Softkey Reference ...
Page 395: ...ET User s Guide 9 1 9 Specifications ...
Page 397: ...ET User s Guide 9 3 Specifications System Performance ...
Page 443: ...ET User s Guide 10 1 10 Safety and Regulatory Information ...
Page 449: ...ET User s Guide 10 7 Safety and Regulatory Information Regulatory Information ...
Page 450: ...10 8 ET User s Guide Safety and Regulatory Information Regulatory Information ...
Page 451: ...ET User s Guide 11 1 11 Factory Preset State and Memory Allocation ...