me system. We'll use the name MSF to indicate the number
   of ticks per most significant SCLK field.
<P>
 
   We can represent the data that define the SCLK-to-PARSYS mapping as a
   set of ordered triples of encoded SCLK values (in units of ticks since
   spacecraft clock start), their equivalents in PARSYS time, and the rates
   corresponding to each pair of times:
<P>
 
<PRE>
   ( s/c_clock(1),  parsys(1),  rate(1) )
                     .
                     .
                     .
   ( s/c_clock(n),