
Calibrating for Increased Measurement
Accuracy
Choose an Appropriate Calibration Method
Conversion loss measurements typically utilize only a normalization
calibration. See “lb Perform a Normalization Calibration” earlier in this
chapter.
When in conversion loss measurement mode, the analyzer is using its internal
broadband detectors and pressing the (CAL) key calls up a menu for zeroing
the detectors. Zeroing the detectors helps compensate for drift due to changes
in ambient temperature. The two (CAL) selections for conversion loss mode
are:
periodically compensates for detector drift due to changes in
temperature. When
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
Zero
is pressed.
I
N O T E
When zeroing the detectors, the analyzer turns off the internal RF source. If you are measuring an
external source with the broadband detectors, use
the external source is
connected to the TRANSMISSION port.
6-15
Summary of Contents for 8712C
Page 1: ...I I User s Guide HP 8712C and HP 8714C RF Network Analyzers I ...
Page 17: ...I 1 Installing the Analyzer ...
Page 35: ...I 2 Getting Started ...
Page 54: ...I 3 Making Measurements ...
Page 81: ......
Page 119: ...4 Using Instrument Functions ...
Page 182: ...Using Instrument Functions Customizing the Display Figure 4 24 Expanded Display 4 64 ...
Page 223: ...5 Optimizing Measurements ...
Page 244: ...6 Calibrating for Increased Measurement Accuracy ...
Page 280: ...7 Automating Measurements ...
Page 298: ......
Page 362: ...8 Front Rear Panel ...
Page 373: ......
Page 381: ......
Page 386: ... 9 w I Suftkey Reference ...
Page 477: ...I 10 Specifications and Characteristics ...
Page 501: ...11 Safety and Regulatory Information ...
Page 508: ...I 12 preset State and Memory Allocation ...
Page 527: ...Index ...
Page 559: ...Y X 9 91 YYW m m IiH rn 9 91 Z zeroing detectors 6 15 Index 33 ...