BS EN 60728-5:2016 specifies the characteristics of equipment used in the headends of terrestrial broadcast and satellite receiving systems (without satellite outdoor units and without those broadband amplifiers in the headend as described in IEC 60728-3). The satellite outdoor units for fixed satellite systems (FSS) are described in ETSI ETS 300 158, and for broadcast satellite systems (BSS) in ETSI ETS 300 249. Test methods for both types (FSS and BSS) of satellite outdoor units are laid down in ETSI ETS 300 457.

This part of IEC 60728

• covers the frequency range 5 MHz to 3 000 MHz;
• identifies performance requirements for certain parameters;
• lays down data publication requirements for certain parameters;
• stipulates methods of measurements;
• introduces minimum requirements defining quality grades (Q-grades).

This part of IEC 60728 specifies the overall characteristics for upstream/downstream signals between external sources/sinks (for example, antennas, cable modem termination systems, etc.) and the system interface to the cable network. In the case of modular headend systems, single equipment items such as modulators, converters, etc. are also described. Cable modem termination systems, encrypters, decrypters, etc. are not described in this part of IEC 60728. If such equipment is used in headends, the relevant parameters for RF, video, audio and data interfaces should be met.

According to the definitions in 3.1, the headends are divided into the following three quality grades:

• Grade 1: central headend;
• Grade 2: hub headend or hubsite;
• Grade 3: MATV headend/individual reception headend.

Figure 1 shows the block diagram of a headend consisting of typical processing units with the corresponding interfaces at the input and output.


Cross References:
IEC 60068-2-1
IEC 60068-2-2
IEC 60068-2-14
IEC 60068-2-27
IEC 60068-2-30
IEC 60068-2-31
IEC 60068-2-40
IEC 60244-5
IEC 60529
IEC 60728-1
IEC 60728-2
IEC 60728-3:2010
IEC 60728-11
IEC 61319-1
ISO/IEC 13818-1
ISO/IEC 13818-2
ISO/IEC 13818-3
ISO/IEC 13818-4
ITU-R Recommendation BS.468-4
ITU-R Report BT .624-4
ITU-T Recommendation J.61
ITU-T Recommendation J.101
ETSI EN 300 421
ETSI EN 300 429
ETSI EN 300 468
ETSI EN 300 473
ETSI EN 300 744
ETSI EN 302 307
ETSI EN 302 755
ETSI ETS 300 163
ETSI TR 101 211
EN 60068-2-1
EN 60068-2-2
EN 60068-2-14
EN 60068-2-27
EN 60068-2-30
EN 60068-2-31
EN 60068-2-40
EN 60244-5
EN 60529
EN 60728-1
EN 50083-2
EN 60728-3:2011
EN 60728-11
EN 61319-1
IEC 60050
IEC 60130-9
IEC 60417
IEC 60617
ETSI TS 102 831
IEC 61169-2:2001
IEC 61169-8
EN 50083-9
CLC/TR 50083-5-1
ETSI ES 200 800
ETSI ES 201 488
ETSI ES 202 488
ETSI ETS 300 158
ETSI ETS 300 249
ETSI ETS 300 457
ETSI TS 102 034
EN 60050
EN 60130-9
EN 61169-2:2001
EN 61169-8


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