function PlotPingData( Port, Stbd, PlotNum )
figure( PlotNum );
clf;
subplot( 2, 1, 1 ); plot( Port ); xlabel( 'Sample' ); ylabel( 'Amplitude' ); title( 'Port' );
subplot( 2, 1, 2 ); plot( Stbd ); xlabel( 'Sample' ); ylabel( 'Amplitude' ); title( 'Stbd' );

