Information technology — Fibre Distributed Data Interface (FDDI) — Part 4: Single Mode Fibre Physica...
This part of ISO/IEC 9314 specifies the Single-mode fibre Physical Layer Medium Dependent (SMF-PMD) requirements for the Fibre Distributed Data Interface (FDDI).FDDI provides a high bandwidth (100 megabits per second) general purpose interconnection among computers and peripheral equipment using a fibre optic waveguide as the transmission medium. The FDDI may be configured to support a sustained…
1. Scope
1.1 Purpose
The purpose of this Code is to provide minimum requirements for the design,
construction, installation, and maintenance of those mechanical refrigeration
systems included in Clause 1.2, so as to minimize the risk of human injury.
Note: This Code does not directly address protection of property and
preservation of the environment, which may be addressed in other Acts…
Electrical Safety and Essential Electrical Systems in Health Care Facilities
1. Scope
1.1 General
1.1.1 Application
This Standard addresses
(a) electrical safety associated with the provision of health care;
(b) building electrical installations for health care facilities; and
(c) essential electrical systems for health care facilities.
Notes:
(1) This Standard is not intended to apply to veterinary facilities, although its principles of electrical…
Fibre optic communication subsystem basic test procedures - Part 4-2: Fibre optic cable plant - Sing...
Describes procedures to measure the optical attenuation (loss) performance of installed single-mode fibre optic cable plants.
May be used to measure the optical loss between any two passively connected points, including end terminations, of a single-mode fibre optic cable plant.
Procédures d'essai de base des sous-systèmes de télécommunication à fibres optiques - Partie 4-...
Décrit des procédures de mesure de l'affaiblissement (perte) optique des installations de câbles à fibres unimodales.
Peut-être utilisée pour mesurer les pertes optiques entre deux points quelconques connectés passivement, y compris des terminaisons de connexion, d'une installation de câbles à fibres unimodales.
Low-voltage switchgear and controlgear - Part 5-2: Control circuit devices and switching elements - ...
Applies to inductive and capacitive proximity switches that sense the presence of metallic and/or non-metallic objects, ultrasonic proximity switches that sense the presence of sound reflecting objects, photoelectric proximity switches that sense the presence of objects and non-mechanical magnetic proximity switches that sense the presence of objects with a magnetic field. These proximity…
Appareillage à basse tension - Partie 5-2: Appareils et éléments de commutation pour circuits de com...
S'applique aux détecteurs de proximité inductifs et capacitifs qui détectent la présence d'objets métalliques et/ou non métalliques, aux détecteurs de proximité ultrasoniques qui détectent la présence d'objets réfléchissant les ultrasons, aux détecteurs de proximité photoélectriques qui détectent la présence d'objets et aux détecteurs de proximité magnétiques non mécaniques…
1. Scope
1.1
This Standard provides requirements for polyethylene pipe, tubing, and fittings
for use in gas mains and services, including gathering, transmission, and
distribution applications, that carry fuel gases containing not more than 1%
aromatic hydrocarbons.
1.2
This Standard also applies to all types of fittings and connections used in a
plastic gas pipe system, including…
