function sout=open_com(comport)
%
% Function used to prepare a COMport for communication with the TDS220 scope
% Input:
%   comport is a string containing the name (either 'COM1' or 'COM2') to be used.
% Output:
%   returns the serial port object associated with the open port.
%
% Copyright 2002, LJB Development, Inc.
% written by Larry Busse, http://www.ljbdev.com
% Software is provided without warranty.  Use at your own risk.

if nargin <1, comport='COM1';end

sout = serial(comport, 'BaudRate', 9600,...
    'FlowControl','hardware',...
    'Terminator','LF',...
    'Parity','none');
set(sout,'InputBufferSize',5100); %Enough for 2500*sizeof(int16) + extras
fopen(sout);