SIST EN 60933-5:1999

• Abstract:

  Applies to the transfer of video signals between two pieces of equipment in an NTSC, PAL or SECAM high-resolution video system, in the form of a Y-signal, consisting of luminance + blanking + sync, and a C-signal, the same as the modulated chrominance signal of the composite video signal. It specifies the signal levels and impedances at the interface and the type of connector to be used.

• Status: Published
• Publication Date: 31-Mar-1999
• ICS: 31.220.10 - Plug-and-socket devices. Connectors
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-1999
• Due Date: 01-Apr-1999
• Completion Date: 01-Apr-1999
• Mandate: BC-IT-80 EFTA-IT-80 - BC-IT-80 EFTA-IT-80
• Ref Project: EN 60933-5:1993 - Audio, video and audiovisual systems - Interconnections and matching values - Part 5: Y/C connector for video systems - Electrical matching values and description of the connector

• Referred By: SIST EN 60107-1:1999 - Methods of measurement on receivers for television broadcast transmissions -- Part 1: General considerations - Measurements at radio and video frequencies
• Effective Date: 03-Feb-2026

SIST EN 60933-5:1999 is a SIST adoption of the IEC/EN standard for the Y/C connector used in video systems. It specifies the electrical matching values and the connector description for transfer of video signals between two pieces of equipment in NTSC, PAL or SECAM high-resolution colour video systems. In practice, it tells equipment makers and integrators what signal levels, impedances and connector arrangement to use at the interface.

What does SIST EN 60933-5:1999 specify?

SIST EN 60933-5:1999 applies to the transfer of video signals between two pieces of equipment in an NTSC, PAL or SECAM high-resolution video system. The standard focuses on the Y signal, which carries luminance plus blanking plus sync, and the C signal, which is the modulated chrominance signal of the composite video signal.

It specifies the signal levels and impedances at the interface, and it identifies the connector type to be used. The document is organized into a short scope, one normative reference, the main requirements in Clause 3, and an informative annex with connector drawings.

Part of the document	What it covers
Clause 1	Scope of the standard
Clause 2	Normative reference
Clause 3	Contact designation, matching values, and connector requirements
Annex A	Type of connector, with plug and socket figures

What are the key requirements of SIST EN 60933-5:1999?

SIST EN 60933-5:1999 defines how the contacts are designated and what electrical conditions the Y/C interface must meet. For users, this means the connector, signal polarity and matching values must be aligned so that video equipment can interconnect without ambiguity.

Contact designation and function

Clause 3.1 and 3.2 assign the contacts and their functions. The table gives separate returns for Y and C, a Y input or output signal contact, and the screen connection.

In practice, this matters because designers must wire the connector consistently on both equipment and cable ends. Wrong contact assignment can break picture transmission or create interference between luminance and chrominance paths.

Y and C signal matching

Clause 3.2 gives the matching values for the Y and C signals. The Y signal is specified at 1,0 Vpp with a rated input impedance of 75 Ω, and the C signal is specified relative to the standard chrominance level for the same Y signal level, with a rated input or output impedance of 75 Ω.

For users, this means the interface is tied to a defined video level and a defined load. Equipment designers and test labs can use these values to check that source and load equipment will interoperate correctly.

Synchronization and timing

The notes in Clause 3.2 state that synchronization polarity shall be negative. For PAL, the Y and C signals shall be time coincident within 100 ns, measured at the output of the source equipment using a standard colour bar signal at the green/magenta transition.

This matters in practice because timing between luminance and chrominance affects picture quality. The note gives a specific way to check coincidence, so manufacturers know how to verify alignment during design or testing.

PAL chroma amplitude balance

The PAL note also requires the green and magenta chroma signal amplitudes to be equal within 10%.

For readers, this is a practical check on signal balance in PAL operation. It helps maintain consistent colour reproduction at the interface.

Connector construction

Clause 3.3 says the electrical and mechanical requirements of the connector are in accordance with a future IEC standard under consideration. Annex A describes the connector as a circular type with four contacts and shows the plug and socket, with equipment using a socket with female contacts and cables using a plug with male contacts at each end.

This means the document gives the interface intent and form factor, while leaving the detailed connector standardization to a future IEC document.

What terms does SIST EN 60933-5:1999 define?

• Y signal - The luminance path, including blanking and sync, used to carry the brightness-related part of the video signal.
• C signal - The chrominance path carrying the modulated colour information.
• Y/C connector - The connector arrangement used to transfer Y and C separately between video equipment.
• NTSC - One of the television system formats named in the scope for which the interface applies.
• PAL - One of the television system formats named in the scope, also used in the timing and amplitude note.
• SECAM - One of the television system formats named in the scope for which the interface applies.
• CCIR Report 624-3 - The normative television-system reference used for the standard chrominance level.

Who uses SIST EN 60933-5:1999?

SIST EN 60933-5:1999 is used by designers and manufacturers of audio, video and audiovisual equipment, especially equipment for high-resolution colour video systems. It is also relevant to connector and cable designers, test laboratories, and engineers who specify or verify video interfaces.

Buyers and quality managers use it when they need to check whether equipment has the correct Y/C interface and matching values. System integrators use it when connecting source and destination equipment in NTSC, PAL or SECAM environments.

Which standards are used with SIST EN 60933-5:1999?

The normative reference named in Clause 2 is CCIR Report 624-3:1986, Characteristics of television systems - Recommendations and reports of the CCIR. The standard uses it for the definition of the standard chrominance level referenced in the C-signal matching values.

What does the SIST EN 60933-5:1999 document contain?

The document contains a scope statement, one normative reference, a requirements clause, one table of contact designation and matching values, two figures, and an informative annex. Table 1 gives the contact functions and electrical values, while Figure 1 shows the contact designation and Figure 2 shows chrominance-luminance time coincidence for PAL.

Annex A gives the connector type in drawing form, including the plug and socket, and identifies it as a circular connector with four contacts. The document is therefore useful both for interface specification and for verifying practical connector implementation in design, testing, and equipment matching.

SLOVENSKI STANDARD
01-april-1999
Audio, video and audiovisual systems - Interconnections and matching values --
Part 5: Y/C connector for video systems - Electrical matching values and
description of the connector (IEC 60933-5:1992)
Audio, video and audiovisual systems - Interconnections and matching values -- Part 5:
Y/C connector for video systems - Electrical matching values and description of the
connector
Audio-, Video- und audiovisuelle Anlagen - Verbindung und Anpassungswerte -- Teil 5:
Y/C-Steckverbinder für Videosysteme - Elektrische Anpassungswerte und Beschreibung
des Steckverbinders
Systèmes audio, vidéo et audiovisuels - Interconnexions et valeurs d'adaptation -- Partie
5: Connecteur Y/C pour les systèmes vidéo - Valeurs d'adaptation électrique et
description du connecteur
Ta slovenski standard je istoveten z: EN 60933-5:1993
ICS:
31.220.10 9WLþLLQYWLþQLFHNRQHNWRUML Plug-and-socket devices.
Connectors
33.160.40 Video sistemi Video systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME CEI
IEC
INTERNATIONALE
933-5
INTERNATIONAL
Première édition
STANDARD
First edition
1992-12
Systèmes audio, vidéo et audiovisuels —
Interconnexions et valeurs d'adaptation
Partie 5:
Connecteur Y/C pour les systèmes vidéo —
Valeurs d'adaptation électrique et description
du connecteur
Audio, video and audiovisual systems —
Interconnections and matching values
Part 5:
Y/C connector for video systems —
Electrical matching values and description
of the connector
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933-5 ©IEC - 3 -
INTERNATIONAL ELECTROTECHNICAL COMMISSION
AUDIO, VIDEO AND AUDIOVISUAL SYSTEMS —
AND MATCHING VALUES
INTERCONNECTIONS
Part 5: Y/C connector for video systems —
Electrical matching values and
description of the connector
FOREWORD
The formal decisions or agreements of the IEC on technical matters, prepared by Technical Committees on
1)
which all the National Committees having a special interest therein are represented, express, as nearly as
possible, an international consensus of opinion on the subjects dealt with.
They have the form of recommendations for international use and they are accepted by the National
2)
Committees in that sense.
In order to promote international unification, the IEC expresses the wish that all National Committees
3)
should adopt the text of the IEC recommendation for their national rules in so far as national conditions will
permit. Any divergence between the IEC recommendation and the corresponding national rules should, as
far as possible, be clearly indicated in the latter.
This standard has been prepared by IEC Technical Committee No. 84: Equipment and
systems in the field of audio, video and audiovisual engineering.
The text of this standard is based on the following documents:
Six Months' Rule Report on Voting
84(CO)131 84(CO)150
Full information on the voting for the approval of this standard can be found
...