Reading Trace Data Using 32-Bi T Real Format (Gpib) - Agilent Technologies ESA-E Series Programmer's Manual

Programming Examples
Reading Trace Data Using 32-bit Real Format (GPIB )
Reading Trace Data Using 32-bit
Real Format (GPIB )
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/* Reading Trace Data using 32-bit Real Format (HP-IB)
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/*
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/* This C programming example does the following .
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/*
The SCPI instrument commands used are given as
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/* reference .
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/*
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/* -
Opens an HP-IB session at address 18
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/* - Clears the Analyzer
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/* - Resets the Analyzer
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/*
*RS T
/* - Set the input port to the 50 MHz amplitude referenc e
/* CAL :SOUR :STAT ON
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/* - Query for the number of sweep points (for firmware
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/* revisions A .04 .00 and later) . Default is 401 .
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/*
SENS :SWE :POIN?
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/* - Calculate the number of bytes in the header
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/* - Set the analyzer to single sweep mode
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/* INIT :CONT 0
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/* - Sets the analyzer center frequency and span to 50 MHz * /
/* SENS :FREQ :CENT 50 MHZ * /
/* SENS :FREQ :SPAN 50 MHZ * /
/* - Specify 10 dB per division for the amplitude scale in * /
/* and dBm Units * /
/* DISP :WIND :TRAC :Y :SCAL :PDIV 10 dB * /
/* UNIT :POW DBM * /
/* - Set the analyzer trace data to 32-bit Real * /
/* FORM :DATA : REAL,32 * /
/* - Set the binary order to swap * /
/* FORM :BORD SWAP * /
/* - Trigger a sweep * /
/* INIT :IMM * /
/* - Check for operation complete * /
/* *OPC?
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/* - Calculate the number of bytes in the trace record
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/* - Query the trace data
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/* TRAC :DATA? TRACE1 * /
/* - Remove the "," from the ACSII data * /
/* - Save the trace data to an ASCII file
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/* - Close the session
*/
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Chapter 3 3-29