Agilent Technologies ESA-E Series Programmer's Manual page 73

Programming Examples
Using Marker Peak Search and Peak Excursio n
#include <stdlib .h>
#include <math .h>
#include <conio .h>
#include <ctype .h>
#include <string .h>
#include "visa .h "
#define hpESA IDN_E4401B "Hewlett-Packard, E4401B "
#define hpESA IDN E4411B "Hewlett-Packard, E4411B "
ViSession defaultRM, viESA ;
ViStatus errStatus ;
ViChar cIdBuff[256]= {0} ;
char cEnter = 0 ;
int iResult = 0 ;
/*Set the input port to 50MHz amplitude reference* /
void Route50MHzSignal( )
{
viQueryf(viESA, "*IDN?\n", " %t", &cIdBuff) ;
iResult = (strncmp( cIdBuff, hpESA IDN E4401B, strlen(hpESA IDN E4401B)) & &
.
L 1e % . .~ ~ ~ ,
. .t,
~ ., .
_s.-a -a s L
a,
~ . ~ ~ . ... ~ ..i , .,,,_
i z .i . . ,
if( iResult = 0 )
{
/*Set the input port to the 50MHz amplitude reference for the models* /
/*E4411B and E4401B* /
viPrintf(viESA,"CAL :SOUR :STAT ON \n") ;
/* For the analyzers having frequency limits >= 3GHz, prompt the user* /
/* to connect the amplitude reference output to the input* /
printf ("Connect AMPTD REF OUT to the INPUT \n") ;
printf ("
Press Return to continue \n") ;
scanf( "%c",&cEnter) ;
/*Externally route the 50MHz Signal* /
viPrintf(viESA,"CAL :SOUR :STAT ON \n") ;
void main( )
{
/*Program Variables* /
ViStatus viStatus
= 0 ;
Chapter 3
3-13