//***********************************************************************
// PROGRAM NAME: javaex.txt
// Sample java program to talk to instrument via SCPI-over-sockets 
// This program requires Java version 1.1 or later. 
// Save this code as ScpiSockTest.java
// Complile by typing: javac ScpiSockTest.java
// Run by typing: java ScpiSockTest
// The signal generator is set for 1 gHz and queried for it's id string
//***********************************************************************

import java.io.*;  
import java.net.*;  
class ScpiSockTest  
{  
    public static void main(String[] args)  
    {  
       String instrumentName = "xxxxx";	          // Put your instrument's name here  

        try  
        { 	   
       Socket t = new Socket(instrumentName,5025);        // Connect to instrument 
							  // Setup read/write mechanism 
            BufferedWriter out =  
            new BufferedWriter( 
            new OutputStreamWriter(t.getOutputStream())); 
            BufferedReader in =  
            new BufferedReader( 
            new InputStreamReader(t.getInputStream())); 
            System.out.println("Setting frequency to 1 Ghz..."); 
            out.write("freq 1Ghz\n");               			// Set frequency  
            out.flush(); 
            System.out.println("Waiting for source to settle..."); 
            out.write("*opc?\n");                   			// Wait for complete 
            out.flush(); 
            String opcResponse = in.readLine(); 
            if (!opcResponse.equals("1"))  
{ 
       System.err.println("Invalid response to '*OPC?'!"); 
       System.exit(1);                       
} 
       System.out.println("Retrieving instrument ID..."); 
       out.write("*idn?\n");	                      // Query the id string
       out.flush(); 
       String idnResponse = in.readLine();            // Read the id string
                                                      // Pring the id string
       System.out.println("Instrument ID: " + idnResponse); 
}  
       catch (IOException e) 
{  
       System.out.println("Error" + e);  
     }  
   }  
}