3-24 Chapter3
Programming Examples
Reading Trace Data using ASCII Format (HP-IB)
in iResult = 0;
/*Set the input port to the 50 MHz amplitude reference*/
void Route50MHzSignal()
{
viQueryf(viESA, "*IDN?\n", "%t", &cIdBuff);
iResult = (strncmp( cIdBuff, hpESA_IDN_E4401B,
strlen(hpESA_IDN_E4401B)) && strncmp( cIdBuff,
hpESA_IDN_E4411B, strlen(hpESA_IDN_E4411B)));
if( iResult == 0 )
{
/*Set the input port to the 50 MHz amplitude reference
for HP models E4401B or E4411B*/
viPrintf(viESA,"CAL:SOUR:STAT ON \n");
}
else
{
/*For analyzers having frequency limits 3 GHz, prompt
the user to connect the amplitude reference output to the RF
input*/
printf ("Connect amplitude reference output to the
input \n");
printf ("......Press any key to continue \n");
scanf( "%c",&cEnter);
/*Externally route the 50 MHz signal*/
viPrintf(viESA,"CAL:SOUR:STAT ON \n");
}
}
void main()
{
/*Program Variables*/
ViStatus viStatus = 0;
ViChar _VI_FAR cResult[10240] = {0};
FILE fTraceFile;
static ViChar cToken;
int iNum = 0;
long lCount=0L;
long lOpc=0L;
iNum =10240;
lCount =0;
/*Open an HP-IB session at address 18*/
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