Wired Broadband and Related Industry Glossary of Terms with Acronyms As of 13 June 2011 Compiled By: Conrad L. Young, Director, Broadband Technical Strategy



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Home Media Server (HMS)
A general class of devices designed to receive media content and present it or forward it to another device for presentation. An HMS must use the digital rights interface (DRI) and an approved digital rights management (DRM) in order to get digital content from the cable operator.

Home Page
The default Web page that is displayed when you open your browser. The browser may be configured to automatically load this page on start-up, or not until the home button is pressed. It also refers to the main page of a Web site.

Homes Passed (HP)


Total number of homes which have the potential for being hooked up to the cable system.

Horizontal (Hum) Bars


Relatively broad horizontal bars, alternately black and white, which extend over the entire picture. They may be stationary, or may move up or down. Sometimes referred to as a “Venetian blind” effect. Caused by approximate 60-cycle interfering frequency, or one of its harmonic frequencies.

Horizontal Blanking Pulse



The pulse that occurs between each horizontal scan line and extinguishes the beam illumination during the retrace period. [Arr11]
Horizontal Retrace

The term Horizontal Retrace is used to describe the movement of the scanning electron beam in a cathode ray tube as it travels from the right to the left. The scanning beam begins on the left side of the screen, and when it is finished with the line it switches off, drops down, and moves back to the left side of the screen to start another line. [Glo07]
Horizontal Retrace Signal

The Horizontal Retrace Signal is part of a television broadcast signal that tells the receiving television where to stop scanning (at the end of a line) as well as where to re-align itself on the left side. In a television broadcast signal this is one of several parts used by the television to display the images being sent. [Glo07]
Horizontal Sync Pulse

A 5.08 microsecond rectangular pulse riding on top of each horizontal blanking pulse. It synchronizes the horizontal scanning at the television set with that of the television camera. [Arr11]

Host Device


A host device refers to the set-top or receiver containing and executing the OpenCable Application Platform implementation. It is also host to the CableCARD device.

Hour Angle



Steering direction of a polar mount. An angle measured in the equatorial plane between the antenna beam and the meridian plane. [Sat07]
House Drop
The coaxial cable that connects each building or home to the nearest feeder line of the cable network.

Households Using Television (HUT)



AC Nielsen Company term representing the percentage of households in a specific area and in a particular time period that have their television sets turned on as compared to the total number of television households in that area. If, for example, there are 1000 television households in a particular survey area and 500 of those televisions are turned on in a given time period, the HUT level for that area in that time period is 50. The HUT level can be figured as an overall number for the entire United States (a figure used for network programs) or for a local market, as in the case of local programming. A program's share of the audience is calculated on the basis of the HUT level. If a program carried a 20 share, that means that 20% of all households using television had their televisions tuned to that program. [All11]

HP

Homes Passed; homes that could be easily and inexpensively connected to a cable network where the feeder cable is nearby. [Bir04]
HPA

High Power Amplifier; term usually associated with satellite uplink transmitters used at microwave through millimeter wave frequencies to communicate from an earth station to an orbiting satellite receiver and/or transponder.





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