Image Description -  0731-2

A sketch is captioned “Figure 2. SDS Cross-Strapping with up and down
links.”  This figure consists of two parts.  The top part is labeled
“SDS Cross-Strapping With Up Link” and shows how transponders A and B
are cross-strapped with Instrument and primary and redundant Subsystem
components.

The lower figure is not labeled and shows how Transponders A and B are
cross strapped by the use of downlink cards A and B.