Information technology — Data interchange on 120 mm optical disk cartridges using +RW format — Capac...
This International Standard specifies the mechanical, physical and optical characteristics of 120 mm
rewritable optical disks with capacities of 3,0 Gbytes and 6,0 Gbytes. It specifies the quality of the recorded and
unrecorded signals, the format of the data and the recording method, thereby allowing for information interchange
by means of such disks. The data can be written, read and…
Information technology - Segmented keyboard layouts
This International Standard defines the differing requirements necessary when considering the various types of
segmented keyboards. The scope of this International Standard encompasses the three-dimensional layout of
segmented, traditional style keyboards classified as having:
a. Adjustable alphanumeric segments;
b. Fixed angle alphanumeric segments.
This International Standard covers the…
Information technology — Segmented keyboard layouts
This International Standard defines the differing requirements necessary when considering the various types of
segmented keyboards. The scope of this International Standard encompasses the three-dimensional layout of
segmented, traditional style keyboards classified as having:
a. Adjustable alphanumeric segments;
b. Fixed angle alphanumeric segments.
This International Standard covers the…
Petroleum products and crude petroleum — Determination of vapour pressure — Reid method
This International Standard specifies a method for the determination of the vapour pressure of liquid petroleum
products consisting of essentially or wholly of hydrocarbon components, or containing oxygenated hydrocarbons of
specific types and at specified maximum concentrations. The method does not apply outside these concentration
levels, nor to any blends containing methanol or other…
Non-Recirculating Direct Gas-Fired Industrial Air Heaters
1.1 Scope
1.1.1 This standard applies to newly produced, direct gas-fired industrial air heaters of the non-recirculating type, hereinafter referred to as heaters, whose purpose is to offset building heat loss. All air to the heater shall be ducted directly from outdoors and the products of combustion generated by the heater are released into the air stream being heated.
Heaters covered by…
Fibre-reinforced plastic composites — Determination of compressive properties in the in-plane direct...
1.1 This International Standard specifies two methods for determining compressive properties, in directions parallel
to the plane of lamination, of fibre-reinforced plastic composites.
1.2 The compressive properties are of interest for specifications and quality-control purposes.
1.3 Two loading methods and two types of specimen are described. They are:
Method 1: provides shear loading of the…
Fibre optic connector interfaces - Part 15: Type LSH connector family
Defines the standard interface dimensions for the type LSH family of connectors.
The parent connector for the type LSH connector family is a single-position plug connector which is characterized by a 2,5 mm. nominal ferrule diameter. It includes a push-click-pull coupling mechanism, which is spring-loaded relative to the ferrule in the direction of the optical axis. The optical alignment…
Power electronics for electrical transmission and distribution systems - Testing of thyristor valves...
Defines type, production and optional test on thyristor valves used in thyristor controlled reactots (TCR), Thyristor switched reactor (TSR) and thyristor switched capacitors (TSC) forming part of static VAR compensators (SVC) for power system applications. the requirements of the standard apply both to single valve units (one phase) and to multiple valve units (several phases). Clauses 4 to 7…
This International Standard establishes specifications for the stability of photographic films intended for storage of
records; specifically, microfilms with a base of safety polyester [poly(ethylene terephthalate)] having predominantly
silver behenate salts dispersed in nongelatinous emulsions, and thermally processed to produce a black-and-white
silver image.
This International Standard applies…
