null 2 360 1800 * 0 0 0 0 0 0 * 0 0 0 0 0 0 # This is a "null record", readable by any application built using WFDB library # version 9.1 or later. There are no signal files associated with this # record (the `*' in the signal specification lines above has no special # significance). If read, this record appears to have 1800 samples (5 seconds # at 360 Hz) in each of two signals, and all samples are zero. If this record # is used as a template for output (e.g., using osigopen("null", ...)), any # samples "written" using putvec() are discarded.