HP ESA-E Series Programmer's Manual page 96

Programming Examples
Reading Trace Data Using ASCII Format (RS-232)
/*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 INT \n");
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
input \n");
printf ("......Press any key to continue \n");
scanf( "%c",&cEnter);
/*Externally route the 50 MHz signal*/
viPrintf(viESA,"CAL:SOUR EXT \n");
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 a serial session at COM1*/
3-32
output to the
Chapter 3