TNAG-2109-FCO40-3008-Outer-Space-Act-1986-extension-to-Hong-Kong-1990 — Page 121

!

3.1 Computers and Peripherals

the

The computer (s) supplied with

system shall provide sufficient CPU power, memory and I/O capacity to support The computer power real-time and stationkeeping function. shall be sufficient to accommodate all critical functions in the event of loss of computer redundancy.

All computers shall be equipped with power-fail/restart capability and the software shall be configured to ensure continuation of service after the power recovery. They also have the capability for memory parity-error detection and, as a desirable feature, single-bit-error correction circuitry.

6.3.2 They system shall be equipped with discs,

with

for

sufficient

data The

also

or equivalent storage units,

meet capacity to storage and other nominal operational requirements. disc capacity shall be sufficient during normal on-station

to operations

store

minimum a

of thirty

days of (30) archived PCM telemetry data and satellite command log, and fifteen (15) days of archived attitude and archived range and AZ/EL data,

on-line access. Capacity is required for program development (storage of source code) and testing. The capability to expand the disc capacity without

software major

modifications is required facilitate future expansion. The disc system shall

the configured

data so that

stored on

disc the accessible from or available on the backup system; if the reliability requirements are met with a redundant system, access shall be capable of occurring simultaneously with access from the on-line system. It shall be possible to transfer critical data to the backup system in the event of a failure in the primary system.

6.3.3 Peripheral Equipment

to

be

is

The following peripheral equipment, as a minimum, shall be provided and integrated into the system:

i)

ii)

iii)

a magnetic tape or equivalent system for archiving of satellite data, disc dumps, and general use;

an

as system with the The console

operator console, located in the OCC control for all function associated day-to-day operation of the satellites. will preferably be a CRT with the capability of producing hard copy of selected system commands and messages;

sufficient terminals located in the OCC, analysis, and computer equipment areas to meet the requirements for system operations, stationkeeping functions, etc.;

16