John ----
Richard Cagley wrote:
If you have a GPIB card, you can use a simple program like this to log data points in a range of spectrum. This was for an HP spectrum analyzer, but if you're using visa it shouldn't matter.
// SpectrumSurvey.cpp : Defines the entry point for the console application. //
#include "stdafx.h" #include <visa.h> #include <windows.h> #include <iostream> #include <fstream>
using namespace std;
int _tmain(int argc, _TCHAR* argv[]) { ofstream OutputFile("spectrum.dat", ios::out);
if (!OutputFile) { cerr<<"File could not be opened"<<endl; return -1; }
ViSession defaultRM, vi; char buf [256] = {0}; char buf2 [256] = {0};
// set the parameters for measurement: in kHz
int StartFreq = 210000;
int StopFreq = 240000;
int StepFreq = 25; int NumberRuns = 1;
// write out the frequencies in the header int CurrentFreq = StartFreq; while (CurrentFreq < StopFreq) { OutputFile<<CurrentFreq<<", "; CurrentFreq += StepFreq; } OutputFile<<endl;
// Open session to GPIB device at address 18 viOpenDefaultRM (&defaultRM); viOpen (defaultRM, "GPIB5::18::INSTR", VI_NULL,VI_NULL, &vi);
viPrintf (vi, "ID?\n"); viScanf (vi, "%t", &buf); printf ("Instrument identification string: %s\n", buf);
double ChannelPower; // main loop to do measurements for (int n = 0; n < NumberRuns; ++n) { CurrentFreq = StartFreq; while (CurrentFreq < StopFreq) { viPrintf( vi,"IP;SNGLS\n"); viPrintf(vi, "FA %dMHZ\n", CurrentFreq); viPrintf(vi, "FB %dMHZ\n", CurrentFreq+StepFreq); viPrintf(vi, "CHP\n"); Sleep(1000*10); viPrintf(vi, "*CHPWR?\n"); viScanf(vi,"%lf",&ChannelPower); OutputFile<<ChannelPower<<", "; CurrentFreq += StepFreq; } OutputFile<<endl; }
viClose (vi);
viClose (defaultRM);
return 0;
}
-----Original Message----- From: [EMAIL PROTECTED] [mailto:discuss- [EMAIL PROTECTED] On Behalf Of SIGINT Admin Sent: Wednesday, May 11, 2005 9:03 AM To: discuss-gnuradio@gnu.org Subject: [Discuss-gnuradio] RF Analysis
Hi
I was wondering if any of you guys had links or pointers to general good quality RF analysis and logging software?
Ideally it would be compatible with the likes of the gnu radio hardware, but could also be interfaced to drive an agilent spectrum analyser or similar....
Any tips or thought welcome
Many thanks
Mochara
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