scope:

The present document applies to categories of digital terrestrial television transmitter defined according to table 1.1 and table 1.2. The output power classification (table 1.1) and emission classification (table 1.2) are combined to define a transmitter category. For example, power classification H and emission classification 0 denotes a high power transmitter (category H0) whose OOB emissions comply with a non-critical mask. Table 1.1: Transmitter power classification Power Class Description Notes H High power transmitter Transmitter with an output power ≥ 25W operating in the VHF band (174 MHz to 230 MHz) or UHF band (470 MHz to 694 MHz). L Low power transmitter Transmitter with an output power < 25W operating in the VHF band (174 MHz to 230 MHz) or UHF band (470 MHz to 694 MHz). Table 1.2: Transmitter emission classification Emission Classification Conformance approach Notes 0 Non critical mask For high power transmitters, the mask defines the level of the OOB relative to the channel power (dBc). For low power transmitters the mask defines the absolute power limit of the OOB (dBm). The former approach is mandated by RRC-06 (non-critical case) [i.4] for transmitters subject to coordination. 1 Critical mask A similar but more stringent approach based on RRC-06 (sensitive case). 2 Non-critical ACLR A set of ACLR limits defining permitted relative emission levels into adjacent channels. 3 Critical ACLR A set of more stringent ACLR limits defining permitted relative emission levels into adjacent channels. The present document contains requirements to demonstrate that radio equipment both effectively uses and supports the efficient use of radio spectrum in order to avoid harmful interference.