Using Limit Lines - Agilent Technologies ESA-E Series Programmer's Manual

Programming Examples

Using Limit Lines

Using Limit Lines

/************************************************************/
/* Using Limit Lines
/*
/* This C programming example does the following.
/* The SCPI instrument commands used are given as
/* reference.
/*
/*
/* - Open an HP-IB session at address 18.
/* - Clear the analyzer.
/* *CLR
/* - Reset the analyzer.
/* *RST
/* - 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
/* - Check to see if limit line passes or fails.
/* pass.
/* CALC:LLINE:FAIL?
/* - Pause for 5 seconds.
/* - Deactivate the 50 MHz alignment signal.
3-44
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
*/
It should */
*/
*/
*/
*/
Chapter 3