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/// </summary>
public void Disconnect()
{
if (m_Client != null)
m_Client.Close();
}
/// <summary>
/// Write to a SCPI command to a network socket and return
the
/// response if it was a query.
/// </summary>
/// <param name="s">SCPI command to be written to the
socket</param>
/// <returns>Response of the instrument or an empty string
/// if there is no response.</returns>
public string Send(string s)
{
string response = "";
int i;
// Write the string to the network socket
byte[] bufferout = new byte[s.Length + 1];
for (i = 0; i < s.Length; i++)
bufferout[i] = (byte)s[i];
bufferout[s.Length] = (byte)'\n';
m_Stream.Write(bufferout, 0, bufferout.Length);
// If the string containes a '?', then it is a query and
// the response nneds to be read from the instrument
if (s.IndexOf('?') != -1)
{
// Read resonse from network stream
int numRead = m_Stream.Read(bufferin, 0,
bufferin.Length);
// if the response contained any bytes, then convert
them
// to a valid string
if (numRead > 0)
{
StringBuilder sb = new StringBuilder();
for (i = 0; i < numRead; i++)
sb.Append((char)bufferin[i]);
// make sure that all kind of terminators are
// reported as \r\n
sb.Append("\r\n");
response = sb.ToString().Trim(new char[] { '\r', '\n'
});
if (response.IndexOf("\r\n") != -1)
response = response.Replace("\r\n", "\n");
if (response.IndexOf("\r") != -1)
response = response.Replace("\r", "\r");
if (response.IndexOf("\n") != -1)
response = response.Replace("\n", "\r\n");
}
}
return response;
}
}
}
Communicate with the instrument
Given the class above, the communication with the instrument
can be done like this:
using System;
using System.Collections.Generic;
namespace TBertExample
{
static class Program
N5980A User Guide 43