
ET User’s Guide
6-15
Calibrating for Increased Measurement Accuracy
Calibration Choices
Reflection Calibration Interpolation
Widening the frequency span after performing the one-port calibration
will invalidate it, and restore the default calibration. You may narrow
the span and the analyzer will interpolate between calibration points for
the narrower span.
Note that after you have calibrated, a "C" appears in the upper right
hand corner of the display. This "C" indicates that a user-defined cal (not
the default) is in use. If you change to a narrower span, note that the "C"
changes to "C?", indicating the analyzer is now interpolating between
calibrated measurement points. The "C?" notation also appears when
other system parameters, such as power, number of points, or sweep
time, have changed.
To Perform a Conversion Loss Calibration
Conversion loss measurements typically utilize only a normalization
calibration. See
“To Perform a Normalization Calibration”
in this chapter, and
When in conversion loss measurement mode, the analyzer is using its
internal broadband detectors and pressing the
key calls up a
menu for zeroing the detectors. Zeroing the detectors helps compensate
for drift due to changes in ambient temperature. The two
selections for conversion loss mode are:
Autozero periodically compensates for detector drift due to changes in
temperature. When autozero is selected, the detectors are automatically
zeroed approximately every five minutes. A pop-up message will briefly
appear on the analyzer's display when the detectors are zeroed.
In manual zero mode, the analyzer zeros the detectors only when the
softkey is pressed.
NOTE
When zeroing the detectors, the analyzer turns off the internal RF
source. If you are measuring an external source with the broadband
detectors, use
before the external source is connected to
the TRANSMISSION port.
CAL
CAL
Autozero
Manual Zero
Manual Zero
Manual Zero
Содержание HP 8712ET
Страница 8: ...viii ET User s Guide ...
Страница 17: ...ET User s Guide 1 1 1 Installing the Analyzer ...
Страница 34: ...1 18 ET User s Guide Installing the Analyzer Preventive Maintenance ...
Страница 35: ...ET User s Guide 2 1 2 Getting Started ...
Страница 52: ...2 18 ET User s Guide Getting Started Performing the Operator s Check ...
Страница 53: ...ET User s Guide 3 1 3 Making Measurements ...
Страница 58: ...3 6 ET User s Guide Making Measurements Measuring Devices with Your Network Analyzer Figure 3 3 Block Diagram ...
Страница 118: ...3 66 ET User s Guide Making Measurements Measuring Impedance Magnitude ...
Страница 119: ...ET User s Guide 4 1 4 Using Instrument Functions ...
Страница 129: ...ET User s Guide 4 11 Using Instrument Functions Using Markers Figure 4 6 6 dB Bandwidth Marker Search ...
Страница 131: ...ET User s Guide 4 13 Using Instrument Functions Using Markers Figure 4 7 6 dB Notch Marker Search ...
Страница 134: ...4 16 ET User s Guide Using Instrument Functions Using Markers Figure 4 10 Multi Peak Search Mode ...
Страница 135: ...ET User s Guide 4 17 Using Instrument Functions Using Markers Figure 4 11 Multi Notch Search Mode ...
Страница 137: ...ET User s Guide 4 19 Using Instrument Functions Using Markers Figure 4 12 Marker Statistics Function ...
Страница 139: ...ET User s Guide 4 21 Using Instrument Functions Using Markers Figure 4 13 Marker Flatness Function ...
Страница 141: ...ET User s Guide 4 23 Using Instrument Functions Using Markers Figure 4 14 RF Filter Statistics Function ...
Страница 143: ...ET User s Guide 4 25 Using Instrument Functions Using Markers Figure 4 15 Delta Marker Mode ...
Страница 149: ...ET User s Guide 4 31 Using Instrument Functions Using Limit Testing Figure 4 16 Limit Lines ...
Страница 167: ...ET User s Guide 4 49 Using Instrument Functions Customizing the Display Figure 4 22 The Display Annotation ...
Страница 171: ...ET User s Guide 4 53 Using Instrument Functions Customizing the Display Figure 4 23 Normal Display ...
Страница 172: ...4 54 ET User s Guide Using Instrument Functions Customizing the Display Figure 4 24 Expanded Display ...
Страница 207: ...ET User s Guide 5 1 5 Optimizing Measurements ...
Страница 226: ...5 20 ET User s Guide Optimizing Measurements Measuring Devices with Long Electrical Delay ...
Страница 227: ...ET User s Guide 6 1 6 Calibrating for Increased Measurement Accuracy ...
Страница 235: ...ET User s Guide 6 9 Calibrating for Increased Measurement Accuracy Calibration Choices Figure 6 4 Calibration Choices ...
Страница 266: ...6 40 ET User s Guide Calibrating for Increased Measurement Accuracy Checking the Calibration ...
Страница 267: ...ET User s Guide 7 1 7 Front Rear Panel ...
Страница 269: ...ET User s Guide 7 3 Front Rear Panel Connectors Connectors Figure 7 1 Analyzer Connectors Front Panel ...
Страница 289: ...ET User s Guide 7 23 Front Rear Panel Line Module Figure 7 12 Power Cable and Line Mains Plug Part Numbers ...
Страница 292: ...7 26 ET User s Guide Front Rear Panel Line Module ...
Страница 293: ...ET User s Guide 8 1 8 Hardkey Softkey Reference ...
Страница 395: ...ET User s Guide 9 1 9 Specifications ...
Страница 397: ...ET User s Guide 9 3 Specifications System Performance ...
Страница 443: ...ET User s Guide 10 1 10 Safety and Regulatory Information ...
Страница 449: ...ET User s Guide 10 7 Safety and Regulatory Information Regulatory Information ...
Страница 450: ...10 8 ET User s Guide Safety and Regulatory Information Regulatory Information ...
Страница 451: ...ET User s Guide 11 1 11 Factory Preset State and Memory Allocation ...