pen dialog</span>
0008 <span class="comment">%   channel - 1-based channel number</span>
0009 <span class="comment">%   unit  - unit number (0- invalid, 1-4 valid)</span>
0010 <span class="comment">% OUTPUT:</span>
0011 <span class="comment">%   n - number of timestamps</span>
0012 <span class="comment">%   ts - array of timestamps (in seconds)</span>
0013 
0014 <span class="keyword">if</span>(nargin ~= 3)
0015    disp(<span class="string">'3 input arguments are required'</span>)
0016    <span class="keywor