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Chapter 7
7-41
Programming Examples
Measurement Calibration Examples
Example 2F: Using Raw Data to Create a Calibration (Simmcal)
NOTE
This program is only valid on ES model analyzers.
This program simulates a full 2-port cal by measuring the raw data for each “standard”
and then loading it later into the appropriate arrays. The program can be adapted to
create additional calibrations using the same arrays. It uses the analyzer’s default 7-mm
cal kit.
CAUTION
This feature is not currently supported with TRL calibrations.
The following is an outline of the programs' processing sequence:
• An I/O path is assigned for the analyzer.
• The system is initiated.
• The instrument ID is queried so that the program can later branch accordingly for the
S11C and S22C (load) classes.
• The number of points is set to correspond to the size of the dimensioned memory arrays
and ASCII data format is selected.
• The 7-mm calibration kit is selected, sweep time is set to 1 second, and the analyzer is
placed into hold mode.
• S11 measurement is selected for gathering the forward reflection standards.
• The system operator is prompted to connect each of the three standards, one at a time.
• Following each prompt, a single sweep is taken and the raw measured data for that
standard is read from the analyzer into a corresponding memory array in the controller.
• S22 measurement is selected for gathering the reverse reflection standards.
• The system operator is prompted in the same manner as before and the raw data for the
three standards is measured and stored away as before.
• The system operator is prompted to make the thru connection between Port 1 and Port
2.
• S21 measurement is selected, a single sweep is taken and the raw data is read into an
array corresponding to forward transmission.
• S11 measurement is selected, a single sweep is taken and the raw data is read into an
array corresponding to forward thru match.
• S12 measurement is selected, a single sweep is taken and the raw data is read into an
array corresponding to reverse transmission.
• S22 measurement is selected, a single sweep is taken and the raw data is read into an
array corresponding to reverse thru match.
• The analyzer begins the normal 2-port calibration procedure, but with the default beep
turned off.
Summary of Contents for 8719ES
Page 15: ...1 1 1 Alphabetical Command Reference ...
Page 293: ...2 1 2 Introduction to Instrument Control ...
Page 310: ...3 1 3 GPIB Programming ...
Page 334: ...4 1 4 Reading Analyzer Data ...
Page 343: ...5 1 5 Data Processing Chain ...
Page 350: ...6 1 6 Error Reporting ...
Page 364: ...7 1 7 Programming Examples ...
Page 502: ...A 1 A Preset Conditions ...
Page 517: ...B 1 B Command Listings ...