Reading Trace Data Using 32-Bit Real Format (Rs-232) - Agilent Technologies ESA-E Series Programmer's Manual

Reading Trace Data Using 32-bit Real Format
(RS-232)
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/* Reading Trace Data using 32-bit Real Format (RS-232)

/*
/* This C programming example does the following.
/* The SCPI instrument commands used are given as
/* reference.
/*
/* - Opens an RS-232 session at COM1/COM2
/* - Clears the Analyzer
/* - Resets the Analyzer
/* *RST
/* - Set the input port to the 50 MHz amplitude reference
/* CAL:SOUR:STAT ON
/* - Query for the number of sweep points (for firmware
/* revision A.04.00 and later). Default is 401.
/* SENS:SWE:POIN?
/* - Calculate the number of bytes in the header
/* - Set the analyzer to single sweep mode
/* INIT:CONT 0
/* - 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?
/* - Calculate the number of bytes in the trace record
/* - Set VISA timeout to 60 seconds, to allow for slower
/* transfer times caused by higher number of sweep points */
/* at low baud rates.
/* - Set VISA to terminate read after buffer is empty
/* - Query the trace data
/* TRAC:DATA? TRACE1
Chapter 3

Reading Trace Data Using 32-bit Real Format (RS-232)

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Programming Examples
3-39