
3-62
ES User’s Guide
Making Measurements
Measuring Conversion Loss
Inserting a 700 MHz bandpass filter in the measurement setup removes
the unwanted signals at 200 MHz, 900 MHz, and 1100 MHz, providing
an accurate measurement of the desired IF signal at 700 MHz.
In the following example, the conversion loss of a mixer will be measured
with RF input frequencies over a 15 MHz span centered at 900 MHz.
With an LO frequency of 200 MHz, the mixer IF frequency will sweep
over a 15 MHz span centered at 700 MHz.
Enter the Measurement Parameters
Press the following keys on the analyzer:
(
or
)
NOTE
This example measurement uses the default instrument parameters for
a conversion loss measurement. If your particular conversion loss
measurement requires different parameters (such as source power level,
number of data points, and sweeptime), enter them now.
Perform a Normalization Calibration
Normalization is the simplest type of calibration. The analyzer stores a
measurement trace into memory and divides subsequent measurements
by the stored data to remove unwanted frequency-response errors. This
calibration is used for this measurement to remove the insertion loss
errors of the IF filter and the interconnect cables. Changing the
frequency span or number of measurement points will invalidate a
normalization calibration.
Perform the following steps to perform a normalization calibration:
1. Connect the equipment as shown in
.
PRESET
User Preset
Factory Preset
MEAS 1
More Conversion Loss
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 ...