H

Hard Clad Silica (Fiber Optic):

Abbreviated HCS, it is a structure in fibers where the cladding around the glass core is a hard plastic, as opposed to a "PCS," which is a soft plastic cladding.

Heat Shrinkable:

The term describing tubes, sleeves, caps, boots, films, or other forms of plastic which shrink to encapsulate, protect or insulate connections, splices, terminations, and other configurations.

Hermetic:

Permanently sealed by fusion, soldering, or other means to prevent the transmission of air, moisture vapor, and all other gases. Hermeticity is usually expressed as the rate of leakage volume of tracer gas (such as helium) per second in time.

Hertz (Hz):

Unit of frequency equal to one cycle per second.

High Definition Television:

Abbreviated as HDTV, a recent form of broadcast of television signals in a significantly higher resolution providing images of superior quality. HDTV signals in the studios and arenas are normally carried over optical fibers due to the high bandwidths required for the digitized signal data.

Hi-pot:

A test designed to determine the highest potential that can be applied to a conductor without breaking through the insulation.

High Voltage:

Generally, a wire or cable with an operating voltage of over 600 volts.

Holding Strength:

The ability of a connector to remain assembled to a cable when under tension.

Housing:

The main or largest portion of a connector to which other portions are attached or enclosed.