Cycles — Lighting and retro-reflective devices — Photometric and physical requirements — Part 2: Ret...
This part of ISO 6742 specifies general requirements for retro-reflective devices for fitting to cycles intended to be used on public roads. Such retro-reflective devices are effective in conditions of poor visibility and at night in helping to make all road users aware of the presence of a cyclist.
Syntaxe du protocole de la couche présentation du vidéotex/télétexte
1. Domaine d'application
1.1 Se fondant sur l'architecture définie dans le modèle de référence multicouche de l'ISO pour l'interconnexion des systèmes ouverts, cette norme décrit les formats, les règles et les procédures de codage de textes alphanumériques et d'images pour les systèmes vidéotex et télétexte¹. (¹Le terme «télétexte» (pas encore entériné par CCIR)…
1. PURPOSE AND APPLICATIONS
The purpose of this standard is to define, standardize and simplify the terms,
regulations and techniques relating to the pruning of trees undertaken to:
a) correct an existing or potential unbalance between the crown and the
roots;
b) terminate, reduce, maintain, control or encourage growth;
c) ensure safety…
1. OBJEt
1.1 La présente norme provisoire s'applique aux symboles et aux quelques
légendes associées, destinés à communiquer de l'information aux usagers
des installations de transport de passagers, plus particulièrement des
communications reliées aux services publics et à la sécurité du public.
1.2 La présente norme a été établie de façon à être…
1. SCOPE
1.1 This provisional standard applies to symbols intended for use in
communicating information to users of passenger transportation
facilities, with emphasis on messages related to public services and
safety.
1.2 This standard is intended to provide compatibility with existing
standards such as CAN3-Z321-77 "Signs and Symbols for the…
Semiconductor devices. Integrated circuits. Part 2: Digital integrated circuits
This publication gives standards for the following categories or sub-categories of devices:
-Combinatorial and sequential digital circuits;
-Integrated circuit memories;
-Integrated circuit microprocessors;
-Charge-transfer devices.
Should be used together with IEC 747-1 and 748-1.
1. Scope
1.1 This Standard outlines the technical properties of and specifications for a line impedance stabilization network (LISN) used in the measurement of conducted electromagnetic emissions in the frequency range 0.01 to 30 MHz.
1.2 The LISN is applicable to the measurement of electromagnetic interference voltages originating from electrical apparatus and conducting into the public…
