A Case Study in NASA-DoD - The Black Vault

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NOTES TO TABLE C-3 (Cont.)
well shielded, and the input and output signal leads should be run in
separate cables and connectors. The encryption unit would be GFE.
iThe MS tape recorder has a larger capacity than the STPSS one and
so should satisfy all Space Test Program missions.
JThe MMS telemetry format and data rates offer a great deal of flexibility
and can be used by STP; they will probably accommodate a large
percentage of the payloads. However, there may be some penalties involved
in accepting the fixed minor frame length (128 words), the fixed
number of subcommutated words (4), and the fixed major frame length (128
minor frames). Supercommutation of the minor frame words and/or of the
subcommutated data is provided in the MMS design and will add the flexibility.
A recent change to the MKS clock will permit data rates of 128
and 256 kbps.
kThe MtS computer is larger than that of the STPSS because it handles
attitude control as well as C&DH. However, there is adequate room in
the MMS computer for STP data handling.
The N4S remote unit is usable for STP missions assuming that the
data bus controller, clock and format generator, and standard computer
interface used is that of the MKIS. Using the STPSS bus controller rather
than these units would require using an STPSS data interface unit.
mAssumes an initially compatible design.
nlnvolved with solar panel deployment on tINS and is required.
STPSS vehicle has nothing comparable. It can be assumed that the changes
that must be made in the decoder will not jeopardize this function.
The
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