IEC 62946-02:2017 pdf download

IEC 62946-02:2017 pdf download.Connectors for electronic equipment – Part 02: Detail specification for 8-way, unshielded
1 Scope
This part of IEC 62946 covers 8-way, unshielded free and fixed high density connectors for data transmission with frequencies up to 250 MHz and with extra low voltage current carrying capabilities up to 1 A, and is intended to specify the common dimensions, mechanical, electrical, signal integrity and environmental characteristics and tests for these connectors.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-581 , International Electrotechnical Vocabulary (IEV) – Chapter 581: Electromechanical components for electronic equipment IEC 60068-1 , Environmental testing – Part 1: General and guidance IEC 6051 2 (all parts), Connectors for electronic equipment – Tests and measurements IEC 6051 2-1 , Connectors for electronic equipment – Tests and measurements – Part 1: General IEC 6051 2-1 -1 00, Connectors for electronic equipment – Tests and measurements – Part 1-100: General – Applicable publications IEC 6051 2-1 1 -7, Connectors for electronic equipment – Tests and measurements – Part 11-7: Climatic tests – Test 11g: Flowing mixed gas corrosion test IEC 6051 2-26-1 00, Connectors for electronic equipment – Tests and measurements – Part 26-100: Measurement setup, test and reference arrangements and measurements for connectors according to IEC 60603-7 – Tests 26a to 26g IEC 61 984, Connectors – Safety requirements and tests ISO/IEC 1 1 801 , Information technology – Generic cabling for customer premises
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-581 , IEC 6051 2-1 and the following apply.
4 Common features and typical connector pair
4.1 Mating information 4.1.1 General Dimensions are given in millimetres. Drawings are shown in third-angle projection. The shape of connectors may deviate from those given in Figures 1 to 4 and Tables 1 to 3 as long as the dimensions specified are not changed. 4.1.2 Contacts – mating conditions
5.5 Transmission characteristics
5.5.1 General Compliance to this document, in respect to transmission characteristics, is determined according to specific test methods described in test group GP. All transmission performance requirements apply between the reference planes specified in IEC 6051 2-26-1 00. All transmission results shall be reported as worst case overall result for the corresponding pair or pair combination after testing all samples. NOTE In the following subclauses f is the frequency, expressed in MHz. 5.5.2 Insertion loss (IL) Conditions: IEC 6051 2-26-1 00, Test 26a Mated connectors All pairs: ≥ 0,02x√ f dB from 1 MHz to 250 MHz. Whenever the equation results in a value less than 0,1 dB, the requirement shall revert to 0,1 dB. 5.5.3 Return loss (RL) Conditions: IEC 6051 2-26-1 00, Test 26b Mated connectors All pairs: ≥ 64-20 log (f ) dB from 1 MHz to 250 MHz . Whenever the equation results in a value greater than 30 dB, the requirement shall revert to 30 dB. 5.5.4 Near end cross talk (NEXT) Conditions: IEC 6051 2-26-1 00, Test 26c Mated connectors All pair combinations: ≥ 94-20 log (f ) dB up to 250 MHz . Whenever the equation results in a value greater than 80 dB, the requirement shall revert to 80 dB. 5.5.5 Far end cross talk (FEXT) Conditions: IEC 6051 2-26-1 00, Test 26d Mated connectors All pair combinations: ≥ 83,1 -20 log (f ) dB from 1 MHz to 250 MHz .
It is permissible to limit the number of variants tested to a selection representative of the whole range for which approval is required (which may be less than the range covered by the detail specification), but each feature and characteristic shall be validated against the dimensional requirements and test sequences specified in this document. The connectors shall have been processed in a careful and workmanlike manner, in accordance with good current practice. Unless otherwise specified, mated sets of connectors shall be tested. For contact resistance measurements, care shall be taken to keep a particular combination of connectors together during the complete test sequence; so that, when un-mating is necessary for a certain test, the same connectors shall be mated for subsequent tests.