and location. Terminal markings and labels shall be of a permanent and
legible type and located to be visible when associated system wiring is in
place. Identification markings shall be associated with each adjustment
device or item requiring periodic maintenance. Safety warning or cautions
shall be marked in conspicuous red letters. Control and indicator
identifications that are exposed outside enclosures shall be permanent,
machine-engraved letters, painted to contrast with background color.
Controls not required for system operation shall be inaccessible to the
system operator.
2.4.11
Computer Software
Software shall be comprised of computer programs and computer data bases as
required. Software shall be categorized as mission software and support
software.
2.4.11.1
Mission Software
Mission software shall consist of software implemented to provide complete
operation of the IDS.
2.4.11.2
Support Software
Support software shall consist of software implemented to support system
operation, such as system setup and off-line maintenance routines.
2.4.11.3
Software Performance Requirements
Provide software in modules to meet application requirements of this
section. Software shall include the operating system (OS), be complete
off-the-shelf, modifiable for specific IDS application specified herein,
and be a product of and supported by the IDS central processor
manufacturer. OS executive shall accomplish in real time the scheduling
and sequencing of programs for execution. Each program shall be assigned a
priority level. Provide priority levels in sufficient number to provide
total functional operation as specified. Software shall be menu-driven.
Menu, reconfiguration, and other actions which could in any way compromise
the security and integrity of the IDS shall be password controlled. A
minimum of [eight] [_____] password levels shall be provided. Software
provided shall be documented in a user's manual which shall be approved by
the Government prior to system implementation.
2.4.12
Test Points
Test points, controls, and other adjustments inside enclosures shall be
readily visible and accessible with minimum disassembly of equipment. Test
points and other maintenance controls shall not be readily accessible to
operator personnel.
2.4.13
Component Enclosures
Consoles, annunciator housings, power supply enclosures, sensor control and
terminal cabinets, control units, wiring gutters, and other component
housings, collectively referred to as enclosures, shall be formed and
assembled to be sturdy and rigid.
2.4.13.1
Metal Thickness
Thicknesses of metal in cast and sheet metal enclosures of all types shall
SECTION 13703N
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