Programming instructions

Programming Examples
LAN Programming Examples
Chapter 2 91
Sockets LAN Programming Using Java
In this example the Java program connects to the signal generator via sockets LAN. This
program requires Java version 1.1 or later be installed on your PC. To run the program
perform the following steps:
1. In the code example below, type in the hostname or IP address of your signal generator. For
example, String instrumentName = (your signal generator’s hostname).
2. Copy the program as ScpiSockTest.java and save it in a convenient directory on your
computer. For example save the file to the C:\jdk1.3.0_2\bin\javac directory.
3. Launch the Command Prompt program on your computer. Click
Start > Programs >
Command Prompt.
4. Compile the program. At the command prompt type: javac ScpiSockTest.java.
The directory path for the Java compiler must be specified. For example:
C:\>jdk1.3.0_2\bin\javac ScpiSockTest.java
5. Run the program by typing java ScpiSockTest at the command prompt.
6. Type exit at the command prompt to end the program.
Generating a CW Signal Using Java
The following program example is available on the PSG Family Documentation CD-ROM as
javaex.txt.
//**************************************************************************
// PROGRAM NAME: javaex.txt
// Sample java program to talk to the signal generator via SCPI-over-sockets
// This program requires Java version 1.1 or later.
// Save this code as ScpiSockTest.java
// Compile by typing: javac ScpiSockTest.java
// Run by typing: java ScpiSockTest
// The signal generator is set for 1 GHz and queried for its id string
//**************************************************************************
import java.io.*;
import java.net.*;
class ScpiSockTest
{
public static void main(String[] args)
{
String instrumentName = "xxxxx"; // Put your hostname here
try
{
Socket t = new Socket(instrumentName,7777); // Connect to instrument