OptimizingSynthesizerPerformanceCreating and Applyingthe User FlatnessCorrection Array

The following examples demonstrate the user flatness correction feature:

1.Using an HP 437B power meter to automatically enter correction data for a swept 4 to 10 GHz measurement.

2.Manually entering correction data for a stepped (List Mode) measurement.

3.Making swept mm-wave measurements, automatically entering correction data for an arbitrary list of correction frequencies.

4.Making scalar analysis measurements with automatically-entered correction data that compensates for power variations at the output of a directional bridge.

Each example illustrates how to set up correction tables for a different measurement requirement. Modify the instrument setups shown to suit your particular needs. Completed correction tables may be easily edited if more correction data is required for your measurement. Additional correction frequencies may be added by using the auto fill feature or by entering correction frequencies individually. The auto fill feature adds but does not delete correction frequencies.

There are two basic front-panel methods of creating a flatness correction array. The first and quickest method is to use an HP 437B power meter. Refer to Figure 1-18 for the setup. The second method is just as accurate, but requires a little more interaction between the operator and the instruments. Figure 1-19 shows the setup for the second method.

Getting Started Advanced 1-33