The vice chair of SC-05, J. Woodgate, convened the meeting. The agenda and the report from the previous meeting were approved as written.
Current development projects
AES14-R Review of AES14-1992 (r1998) AES standard for professional audio equipment -- Application of connectors, part 1, XLR-type polarity and gender
The table does not mention mid-side (M-S) microphones, and it was agreed that an entry should be added. Liaison is necessary with SC-04-04 to produce unambiguous definitions of M and S (M = A+B, S = A-B?). This work could be input for a revision of IEC60268-4, which has been proposed.AES45-R Review of AES45-2001, AES standard for single programme connectors -- Connectors for loudspeaker-level patch panels ,s
One comment received on the CFC was responded to by the secretariat and the standard has been published. Discussion on second-sourcing of the connectors was deferred, pending resolution of litigation between manufacturers.AES-X11 Fiber-Optic Audio Connections: Connectors and Cables Being Used and Considered for Audio
The new SC-05-02-F writing group on fibre-optic connectors is not meeting at Amsterdam. This group should examine the programme of work of IEC SC86C. AES-10 (MADI) now includes a fibre-optic option using the 'ST-1' connector, which is multi-sourced but apparently not included in any connector standard, or in the programme of SC86C. SC-05-2-F is invited to study this connector and decide whether to include it in AES32-TU and whether to propose to SC86C to make an IEC standard for it or include it in an existing planned publication. AES-X92 (Audio over ATM) may use fibre-optic connectors. SC-05-02-F should also study this subject.AES-X40 TRS Connectors
The draft has been published as AES-R3. The project continues to run and an amendment to this report can be prepared at any time.AES-X105 Modified XLR-3 Connector for Digital Microphones
SC-02-02 is now discussing a dedicated connector. SC-05-02 is invited to prepare a standard. It appears that this work should lead to an early amendment of the 'XLR' standard IEC61076-2-103, currently at the 2CD stage (comment date expired in April) in IEC. SC-05-02 should prepare a draft with fully-dimensioned drawings and full specification details where necessary. It was agreed not to consider the work in SC-05-05 on an electromagnetic compatibility (EMC) cable connector at this stage, because this connector should be wholly reserved for digital audio, which has quite different EMC characteristics from those of low-level analogue audio (Increased r.f emission threat, much higher immunity to common-mode signals at all frequencies). It was noted that the connector is expected to be identified by a marker band. The removability of the key should be an option, not a requirement. M. Natter will be invited to produce a draft.AES-X112 Non-conductive outer surface XLR connector
It was agreed that the subject was not suitable for a standard and SC-05 should be asked to transfer it to SC-05-05 for the production of an Information Document.AES-X113 Universal female phone jack
This is a connector that is specified to be able to accept both IEC60603-11 and B-gauge 6,35 mm connectors. Such a connector would be valuable for test equipment and for products interfacing with both consumer and professional interconnections. Woodgate produced a draft application for the currently nascent project which was modified by the group and submitted to SC-05.New projects
Insulated panel-mounting XLR connectors: It was agreed that J. Brown would produce a project initiation request. A moulded insulator exists as and drawing may be available. Woodgate will investigate. A grounding clip for the shells of such connectors should also be included in the project: this could be useful for other applications.
EMC-able connector: To follow SC-05-05 work, a standard for this connector will be required. Brown will prepare a project initiation request.
There was no new business.
The next meeting is scheduled to be held in conjunction with the AES 111th Convention in New York, New York, US.
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