6.0

6.1

5.6

It shall be a design goal that the operator should not have to monitor more than two video monitors to carry out any

(i.e.

inclination function desired operational.

a "snapshot" of the

manoeuvre). A capability to create current data displays shall be provided.

an

The operator command repertoire shall include a facility to request system status and print control information (e.g.

All display titles, system telemetry limit settings). messages, and operator commands shall be language.

The

system computer

in in the English

monitor shall.

computer

order

all units (e.g. which are normally to verify correct

decommutators, command generators)

connected

to the

operation of the units at the time of their operation (when

commanded).

in

The system shall

decommutator

malfunctions (e.g.

occurred).

A

(computer

real

advise the operator that loss of lock have

printout)

of all operator

time

and messages

log hardcopy real-time operations (systems commands) shall be maintained for at least the previous

week.

Software Standards

Programs shall be written in current computer-manufacturer supported version of a high level language (e.g. FORTRAN, Where PASCAL, ALGOL) in a well structure, modular fashion. appropriate and necessary, some programs may be written in assembler. Sufficient comments shall be included in the source code to make the individual programs essentially self-documenting. The full source code shall be supplied for all systems' programs, with the possible exception of any manufacturer-supplied operating system, in both printed and machine-readable form if permitted.

No

manufacturer-supplied computer

sub-routine libraries, with

systems, included

the system

software

(operating utility programs,

etc) modified by the shall be

made to It shall be

Contractor except where such modifications are correct known, documented system faults. possible to install new releases of such software without Contractor or manufacturer-supplied modifying either the software except where precluded by software revisions made by the computer manufacturer.

STATIONKEEPING SOFTWARE

General Requirements

and

controls the

orbit

The Contractor shall provide stationkeeping software which the and attitude of determines operational satellite as necessary to successfully meet all communication performance requirements.

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