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Using Limit Lines
/************************************************************/
/* Using Limit Lines
/*
/* This example is for the E44xxB ESA Spectrum Analyzers
/* and E740xA EMC Analyzers.
/*
/* This C programming example does the following.
/* The SCPI instrument commands used are given as
/* reference.
/*
/*
/* - Open a GPIB session at address 18.
/* - Clear the analyzer.
/*
*CLR
/* - Reset the analyzer.
/*
*RST
/* - Set Y-Axis Units to dBm
/*
UNIT:POW DBM
/* - Define the upper limit line to have frequency/
/*
amplitude pairs.
/*
CALC:LLINE1:CONT:DOM FREQ
/*
CALC:LLINE1:TYPE UPP
/*
CALC:LLINE1:DISP ON
/*
CALC:LLINE1:DATA freq1,amp1,1,freq2,amp2,1...
/* - Define the lower limit line to have frequency/amplitude*/
/*
pairs.
/*
CALC:LLINE2:CONT:DOM FREQ
/*
CALC:LLINE2:TYPE LOW
/*
CALC:LLINE2:DISP ON
/*
CALC:LLINE2:DATA freq1,amp1,1,freq2,amp2,1...
/* - Turn the limit line test function on.
/*
CALC:LLINE2:STAT ON
/* - Set the analyzer to a center frequency of 50 MHz, span */
/*
to 20 MHz, and resolution bandwidth to 1 MHz.
/*
SENS:FREQ:SPAN 20 MHZ
/*
SENS:FREQ:CENT 50 MHZ
/*
SENS:BWID:RES 1 MHZ
/* - Turn the limit line test function on.
/* - Set the analyzer reference level to 0 dBm.
/*
DISP:WIND:TRAC:Y:SCAL:RLEV 0
/* - Set the input port to the 50 MHz amplitude reference.
/*
CAL:SOUR:STAT ON
Chapter 3
Programming Examples
Using Limit Lines
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