Agilent Technologies 4294A Programming Manual page 108

Processing Measurement Results
Analyzing Measurement Results
information on the parameters you can analyze.
Example 7-4 shows a sample program for ceramic resonator parameter analysis using the
"OUTPCERR?" command. This program is available under the filename "ana_com.bas"
on the sample program disk.
This program performs a sweep once, uses the "OUTPCERR?" command to analyze
ceramic resonator parameters, and reads and displays the analysis results.
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Example 7-4 Ceramic Resonator Parameter Analysis
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Identifies the external controller and Instrument BASIC and sets the
GPIB address.
Assigns the sweep center value, the sweep span value, the trace
selected for analysis, and the peak threshold the corresponding
variables Cent, Span, Ana_trc$, and Thrr, respectively.
Resets the Agilent 4294A, sets impedance amplitude and phase as
measurement parameters, sets the sweep center value and the sweep
span value, respectively, to Cent and Span, and specifies log Y-axis
format as display format.
Performs a sweep once and then performs the auto scale to
automatically set the scale parameters so that the waveforms fit on the
screen.
Specifies the entire sweep range as the analysis range and sets the trace
selected for analysis and the peak threshold to "Ana_trc$" and "Thrr,"
respectively.
Executes the "OUTPCERR?" command to read analyzed parameters.
Displays the analysis results.
DIM Ana_trc$[9],Buff$[9]
REAL Cent,Span,Thrr,Zr,Fr,Za,Fa,R1,R2,R3
IF SYSTEM$("SYSTEM ID")="HP4294A" THEN
ASSIGN @Hp4294a TO 800
ELSE
ASSIGN @Hp4294a TO 717
END IF
!
Cent=6.0E+7
Span=2.0E+4
Ana_trc$="DATA"
Thrr=2.0
!
OUTPUT @Hp4294a;"PRES"
OUTPUT @Hp4294a;"MEAS IMPH"
OUTPUT @Hp4294a;"CENT ";Cent
OUTPUT @Hp4294a;"SPAN ";Span
OUTPUT @Hp4294a;"FMT LOGY"
OUTPUT @Hp4294a;"SING"
OUTPUT @Hp4294a;"*OPC?"
ENTER @Hp4294a;Buff$
OUTPUT @Hp4294a;"TRAC A"
OUTPUT @Hp4294a;"AUTO"
OUTPUT @Hp4294a;"TRAC B"
OUTPUT @Hp4294a;"AUTO"
Chapter 7