prEN IEC 60728-103:2025

Active wideband equipment for cable networks with digital signals only

Équipement actif à large bande pour les réseaux câblés avec des signaux numériques uniquement

Aktivna širokopasovna oprema za kabelska omrežja z izključno digitalnimi signali

General Information

• Status: Not Published
• Publication Date: 15-Feb-2027
• ICS: 33.060.40 - Cabled distribution systems
• ICS: 33.170 - Television and radio broadcasting
• Technical Committee: CLC/TC 209 - Cable networks for television signals, sound signals and interactive services
• Current Stage: 4020 - Enquiry circulated - Enquiry
• Start Date: 25-Jul-2025
• Due Date: 21-Feb-2025
• Completion Date: 25-Jul-2025
• Ref Project: oSIST prEN IEC 60728-103:2025 - Active wideband equipment for cable networks with digital signals only

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2025
Aktivna širokopasovna oprema za kabelska omrežja z izključno digitalnimi signali
Active wideband equipment for cable networks with digital signals only
Équipement actif à large bande pour les réseaux câblés avec des signaux numériques
uniquement
Ta slovenski standard je istoveten z: prEN IEC 60728-103:2025
ICS:
33.060.40 Kabelski razdelilni sistemi Cabled distribution systems
33.170 Televizijska in radijska Television and radio
difuzija broadcasting
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

100/4351/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60728-103 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2025-07-25 2025-10-17
SUPERSEDES DOCUMENTS:
100/4133/CD, 100/4162A/CC
IEC TA 5 : CABLE NETWORKS FOR TELEVISION SIGNALS, SOUND SIGNALS AND INTERACTIVE SERVICES
SECRETARIAT: SECRETARY:
Japan Mr Hiroo Tamura
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):

ASPECTS CONCERNED:
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of which
they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some Countries”
clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the final stage for
submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).

TITLE:
Active wideband equipment for cable networks with digital signals only

PROPOSED STABILITY DATE: 2029
NOTE FROM TC/SC OFFICERS:
this electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee
positions. You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose
without permission in writing from IEC.

IEC CDV 60728-103 © IEC 2025
1 CONTENTS
2 FOREWORD . 4
3 INTRODUCTION . 6
4 1 Scope . 7
5 2 Normative references . 7
6 3 Terms, definitions, symbols and abbreviated terms . 8
7 3.1 Terms and definitions . 8
8 3.2 Symbols . 11
9 3.3 Abbreviated terms . 13
10 4 Methods of measurement . 13
11 4.1 General . 13
12 4.2 Linear distortion . 14
13 4.2.1 Return loss . 14
14 4.2.2 Group delay variation . 14
15 4.3 Non-linear distortion. 15
16 4.3.1 General . 15
17 4.3.2 Types of measurements . 16
18 4.3.3 Intermodulation . 16
19 4.3.4 Method of measurement of non-linearity for pure digital channel load for
20 channel loads up to 1 218 MHz . 19
21 4.3.5 Method of measurement of non-linearity for pure digital channel load for
22 channel loads up to 1 794 MHz . 23
23 4.3.6 Hum modulation of carrier . 27
24 4.4 Noise figure . 31
25 4.4.1 General . 31
26 4.4.2 Equipment required . 31
27 4.4.3 Connection of equipment . 32
28 4.4.4 Measurement procedure . 32
29 4.5 Crosstalk attenuation . 32
30 4.5.1 Crosstalk attenuation for loop-through ports . 32
31 4.5.2 Crosstalk attenuation for output ports . 33
32 4.6 Immunity to surge voltages . 34
33 4.6.1 General . 34
34 4.6.2 Equipment required . 35
35 4.6.3 Connection of equipment . 35
36 4.6.4 Measurement procedure . 35
37 5 Performance requirements. 35
38 5.1 General requirements . 35
39 5.2 Safety . 35
40 5.3 Electromagnetic compatibility (EMC) . 36
41 5.4 Frequency range . 36
42 5.5 Impedance and return loss . 36
43 5.6 Gain . 36
44 5.6.1 Minimum and maximum gain . 36
45 5.6.2 Gain control . 36
46 5.6.3 Slope and slope control . 36
47 5.7 Flatness . 36
IEC CDV 60728-103 © IEC 2025
48 5.8 Test points . 37
49 5.9 Noise figure . 37
50 5.10 Non-linear distortion. 37
51 5.10.1 General . 37
52 5.10.2 Second-order distortion . 37
53 5.10.3 Third order distortion . 37
54 5.10.4 Maximum operating level for pure digital channel load . 37
55 5.11 Hum modulation . 38
56 5.12 Power supply . 38
57 5.13 Environmental . 38
58 5.13.1 General . 38
59 5.13.2 Transportation . 38
60 5.13.3 Installation or maintenance . 38
61 5.13.4 Operation . 38
62 5.14 Marking . 39
63 5.14.1 Marking of ports . 39
64 5.15 Requirements for multi-switches . 39
65 5.15.1 Control signals for multi-switches . 39
66 5.15.2 Amplitude frequency response flatness . 39
67 5.15.3 Return loss . 39
68 5.15.4 Through loss . 39
69 5.15.5 Isolation . 39
70 5.15.6 Crosstalk attenuation . 39
71 5.15.7 Satellite IF to terrestrial signal isolation . 39
72 5.16 Immunity to surge voltages . 40
73 5.16.1 Degrees of testing levels . 40
74 5.16.2 Recommendation of testing level degree . 40
75 Annex A (normative) Test carriers, levels and intermodulation products . 41
76 A.1 General considerations on intermodulation products . 41
77 A.2 Two signal tests for second- and third-order products . 42
78 A.2.1 Intermodulation products with test signals at frequencies  and  ,
a b
79 see Table A.3 . 42
80 A.2.2 Signal levels . 42
81 A.3 Three signal tests for third order products – Intermodulation products with
82 test signals at frequencies  ,  and  , see Table A.4 and Figure A.3 . 43
a b c
83 Annex B (informative) Measurement errors that occur due to mismatched equipment . 45
84 Annex C (informative) Examples of measurement channels . 46
85 C.1 Operating frequency range 110 MHz to 1 006 MHz . 46
86 C.2 Operating frequency range 258 MHz to 1 218 MHz . 46
87 Bibliography . 47
89 Figure 1 – Basic arrangement of test equipment for evaluation of the ratio of signal to
90 intermodulation product . 19
91 Figure 3 – BER measurement test configuration . 22
92 Figure 3 – CINR measurement test setup . 28
93 Figure 4 – Plot of CINR in dB curve (forward path) as function of EUT channel output
94 signal level in dB(V) . 29
95 The carrier to hum ratio (R ) is given by following formula (4) . 30
CH
IEC CDV 60728-103 © IEC 2025
96 Figure 5 – Carrier to hum ratio . 30
97 Figure 6 – Test set-up for local-powered objects . 31
98 Figure 7 – Test set-up for remote-powered objects . 31
99 Figure 8 – Spectrum analyser display . 32
100 Figure 9 – Measurement of noise figure . 34
101 Figure 10 – Me
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