
6-14
ET User’s Guide
Calibrating for Increased Measurement Accuracy
Calibration Choices
To Perform a Reflection Calibration
For a review of which systematic errors are removed by each type of
reflection calibration, see the descriptions below. These calibrations are
for measurements using the narrowband detectors.
For an example of performing a one-port calibration for a reflection
measurement, refer to
“Measuring Reflection Response” on page 3-32
In general, follow these steps when performing a reflection calibration:
1. Set up the analyzer for your measurement:
• Select
or
,
.
• Enter operating parameters other than the default.
2. If performing a one-port reflection calibration, select a calibration kit
for the port at your calibration reference plane. Refer to
Calibration Reference Plane” on page 6-5
.
3. Press
, and then one of the following softkeys:
Restoring the default calibration recalls error correction arrays that
were calculated at the factory or during servicing, and then permanently
stored in memory. This one-port calibration was performed using full
band (entire frequency span) and 401 frequency points, and corrects
systematic errors caused by directivity, source match, and frequency
response. It is quick and convenient but not as accurate at narrow
frequency spans. This calibration is also known as the default
calibration.
A one-port calibration prompts you to connect three measurement
standards: an open, a short, and a load. The analyzer measures each
standard across the frequency band you have defined, using the number
of points you have defined. The measurements of these standards are
used to remove systematic errors caused by directivity, source match,
and frequency response.
MEAS 1
MEAS 2
Reflection
CAL
Default 1-Port
1-Port
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 ...