176
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>
void main (int argc,char *argv[])
Summary of Contents for G5100A
Page 5: ...5 D APPLICATION PROGRAMS 173 ...
Page 71: ...71 Schematic of Receiver ...
