HP ESA-E Series - Page 100

3-36 Chapter3
Programming Examples
Reading Trace Data Using 32-bit Real Format (RS-232)
ViSession defaultRM, viESA;
ViStatus errStatus;
ViChar cIdBuff[256]= {0};
char cEnter = 0;
int 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( iRes
{
/*Set the input port to the 50 MHz amplitude reference
for the models E4411B, E4401B*/
viPrintf(viESA,"CAL:SOUR:STAT ON \n");
}
else
{
/* For the analyzers having frequency limits >= 3GHz,
prompt the user to connect the amplitude reference output to
the 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()
{