BNC 645 - Manual (Page 176)

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status = viOpen(defaultRM,instrDesc, VI_NULL,VI_NULL, &vi);
if (status != VI_SUCCESS){
printf("Can not Open device:\"%s\"\n",instrDesc);
return;
}
// This program uses low-level SCPI commands to configure
// the function gnerator to output an AM waveform.
// This program also shows how to use "state storage" to
// store the instrument configuration in memory.
viPrintf(vi,"*RST\n");
viPrintf(vi,"OUTPut:LOAD 50\n"); //Output termination is 50 Ohms
viPrintf(vi,"FUNCtion:SHAPe SINusoid\n"); //Carrier shape is sine
viPrintf(vi,"FREQuency 6000;VOLTage 3\n");//Carrier freq is 6 kHz @ 3 Vpp
viPrintf(vi,"AM:INTernal:FUNCtion SINusoid\n");//Modulating shape is sine
viPrintf(vi,"AM:INTernal:FREQuency 300\n"); //Modulation freq = 300 Hz
viPrintf(vi,"AM:DEPTh 90\n"); //Modulation depth = 90%
viPrintf(vi,"AM:STATe ON\n"); //Turn AM modulation on
viPrintf(vi,"OUTPut ON\n"); //Turn on the instrument output
viPrintf(vi,"*SAV 2\n"); //Store state in memory location 2
// Use the "*RCL 2" command to recall the stored state output
viClose (vi);
viClose (defaultRM);
}
Example: Linear Sweep
This program (found in the “Examples\Linear_Sweep” subdirectory on the CDROM)
creates a linear sweep for a sine wave. It sets the start and stop frequencies, and
the sweep time.
//Linear Sweep
#include <visa.h>
#include <stdio.h>