scope:

The present document covers the minimum characteristics considered necessary in order to make the best use of the available frequencies. It does not necessarily include all the characteristics that may be required by a user, nor does it necessarily represent the optimum performance achievable.

This present document applies to terrestrial wireless digital video link equipment operating on radio frequencies above 1,3 GHz. It does not preclude any digital modulation technique, provided that the modulated signal lies within the prescribed limits. Instructions for the presentation of equipment for testing purposes are included.

The user categories covered, are as follows:

• Category 1: typically used by broadcasters and programme-makers (for use in licensed spectrum). Users require the highest video contribution quality and or minimum processing delay times to allow both real time inserts into programmes and easy accurate editing.

• Category 2: typically used by professional and businesses. Users have quality requirements similar to above but are maybe not concerned with delay issues that plague the broadcaster and can therefore operate within a smaller spectrum mask.

• Category 3: typically used by industrial users. Examples include civil and industrial users, emergency services, Automobile Associations, the utility industries, etc, who need the good quality available from digital-based systems and who operate on licensed allocations.

• Category 4: typically used by industrial users including industrial security. Most of these systems could operate either in ISM bands or frequencies specifically allocated for the purpose.

• Category 5: typically used by consumers caters for consumers, hobbyists and amateur users. The proposed 5 MHz mask can be subdivided into 2 × 2,5 for two way visual communication and is primarily intended for indoor use.

Equipment with controls that if maladjusted might increase its interfering potentialities, shall only be within the scope of the present document if those controls are only accessible by partial or complete disassembly of the device and requiring the use of tools.

The present document is intended to cover the provisions of article 3.2 of Directive 1999/5/EC [1] (R&TTE Directive), which states that "..... radio equipment shall be so constructed that it effectively uses the spectrum allocated to terrestrial/space radio communications and orbital resources so as to avoid harmful interference."

In addition to the present document, other ENs that specify technical requirements in respect of essential requirements under other parts of article 3 of the R&TTE Directive may apply to equipment within the scope of the present document.

NOTE: A list of such ENs is included on the web site http://www.newapproach.org.