
ES User’s Guide
6-19
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 narrowband-detection measurements only.
For examples of performing a two-port calibration and a one-port
calibration for a reflection measurement, refer to
In general, follow these steps when performing a reflection calibration:
1. Set up the analyzer for your measurement:
• Select
or
,
or
.
• Enter operating parameters other than the default.
2. When performing some user-defined calibrations, you must select a
calibration kit to match the port(s) at your calibration reference
plane. A user two-port calibration requires you to select a calibration
kit for each port. A user one-port calibration requires you to select a
calibration kit for only one port. Refer to
“Calibration Kits” on page 6-23
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. The calibration reference plane is at the analyzer’s
port 1 (S
11
) or port 2 (S
22
), so if you use a cable in your test setup you
should adjust the port extension to match the electrical length of the
cable (see
“Port Extensions” on page 5-18
achieved by performing a user-defined one-port calibration. This
calibration is also known as the default calibration.
MEAS 1
MEAS 2
S11 Refl Port 1
S22 Refl Port 2
CAL
Default 1-Port
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 ...