
ES User’s Guide
3-65
Making Measurements
Measuring Conversion Loss
View and Interpret the Conversion Loss
Results
1. If necessary to view the measurement trace, press
.
2. To interpret the conversion loss measurement, refer to
“Example of a Conversion Loss Measurement,”
display if you are making this measurement on your instrument.
a. The values shown on the horizontal axis represent the source RF
output. The values shown on the vertical axis are the power ratio
in decibels (dB) of the transmitted signal through the device
divided by the incident power. To display the result in logarithmic
magnitude format (designated by Log Mag at the top of the
measurement screen), the analyzer computes the measurement
trace using the following formula:
where P
trans
= the power measured at the IF output of the mixer
and where P
inc
= the incident power at the RF input.
b. A level of 0 dB would indicate a perfect device (no loss or gain).
Values greater than 0 dB indicate that the mixer has gain. Values
less than 0 dB indicate mixer conversion loss.
3. If you wish, you can quickly determine the mixer's minimum
conversion loss by pressing
.
SCALE
Autoscale
Conversion Loss dB
(
)
10 log
P
trans
P
inc
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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 ...