by two
   functions:
<P>
 
<B>sctecc_</B>   (sc, sclkdp, et)    (Encoded SCLK ticks to ET, type cc)
</PRE>
<BR>
<B>sceccc_</B>   (sc, et, sclkdp)    (ET to continuous ticks, type cc)
</PRE>
<BR>
<BR><BR>
<A NAME="Spacecraft-Specific Parameters"></A>
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<H3> Spacecraft-Specific Parameters
</H3><P><BR><BR>
   Once the clock type has been determined, SCLK functions need parameters
   that uniquely distinguish each spacecraft within the same SCLK type. For