Bnc 645 User Manual download pdf (Page 177)

177

void main (int argc,char *argv[])

{

ViSession defaultRM,vi=0;

ViStatus status;

char instrDesc[]="USB0::5710::

4002::TW00009009::0::INSTR";

viOpenDefaultRM (&defaultRM);

status = viOpen(defaultRM,instrDesc, VI_NULL,VI_NULL, &vi);

if (status != VI_SUCCESS){

printf("Can not Open device:\"%s\"\n",instrDesc);

return;

}

//This program sets up a linear sweep using a sinusoid

//waveform. It sets the start and stop frequency and sweep

//time.

viPrintf(vi,"*RST\n");

viPrintf(vi,"FUNCtion SINusoid\n"); //Select waveshape

viPrintf(vi,"OUTPut:LOAD 50\n"); //Set the load impedance to

// 50 Ohms (default)

viPrintf(vi,"VOLTage 1\n"); //Set the amplitude to 1 Vpp.

viPrintf(vi,"SWEep:SPACing LINear\n"); //Set Linear or LOG spacing

viPrintf(vi,"SWEep:TIME 1\n"); //Sweep time is 1 second

viPrintf(vi,"FREQuency:STARt 100\n"); //Start frequency is 100 Hz

viPrintf(vi,"FREQuency:STOP 20e3\n"); //Stop frequency is 20 kHz

//Frequency sweep limits may also be set as FREQuency:CENTer and

viPrintf(vi,"OUTPut ON\n"); //Turn on the instrument output

viPrintf(vi,"SWEep:STATe ON\n"); //Turn sweep on

viClose (vi);

viClose (defaultRM);

}

Example: A Pulse Waveform

This program (found in the “Examples\Pulse” subdirectory on the CD-ROM)

configures a pulse waveform, setting pulse width, period, and high/low levels. The

1 2 ... 172 173 174 175 176 177 178 179 180 181 182 ... 189 190

No comments

Bnc 645 User Manual Page 177