Note
Scalar Analysis Measurement with User Flatness Corrections,
Example 4
The following example demonstrates how to set up a scalar analysis
measurement (using an HP 8757 Scalar Network Analyzer) of a 2 to
20 GHz test device such as, an amplifier. User flatness correction
is used to compensate for power variations at the test port of a
directional bridge. Follow the instructions to set up the swept signal
generator, then configure the system as shown in Figure 1-21.
The swept signal generator’s rear panel language and address
switches must be set to 7 and 31 (all l’s), to change the
language or address of the swept signal generator from the front
panel. The programming language must be set to Analyzer.
Refer to menu map 8, System, to find the location of softkey
Programming Language Analyzer (asterisk on = active language).
I
DETECTOR
1
WEPT
SIGNRL
SCRLflR
GENERRTOR
NETYORK
ANRLYZER
Figure l-2 1. Scalar System Configuration
Example Overview
In this example you use an HP 437B power meter to automatically
enter correction data into the array. It is necessary to turn off the
HP 8757 System Interface (controlled from the front-panel of the
analyzer) so that the swept signal generator can temporarily control
the power meter over HP-IB. When the correction data entry process
is complete, enable user flatness correction and set the desired
test port power level. Then store the correction table and swept
signal generator configuration in the same register that contains the
analyzer configuration. Re-activate the HP 8757 System Interface
and recall the stored register. Make sure that user flatness correction
is still enabled before making the measurement.
Getting Started Advanced 1-43
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