DSH 290 Miss-mating of connectors

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DSH 290

Miss-mating of connectors

4.3.17   V" u  A- E0 q

60950(ed.2) - i8 \/ {2 m# a; _/ \, c+ _7 n

Standard: IEC 60950 Ed. 2 Clause: 4.3.17 Sheet n. 290
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6 ], n3 x; i5 E# w  JSubject: Miss-mating of connectors Key words:
- Modular
connector
- Miss-mating
; P! f. R) e6 @: N9 _; v  qDecision n. 23/36
$ z1 |; T# u! @: Otaken at 36th
2 U6 q; N# u7 M5 R; \meeting/1999
Question:
  I, d/ }, q; qIt is very common to use modular connectors (e.g. RJ-11, RJ-12, RJ-45), accessible to the
- T- o: R+ p( e. q2 w& O7 pusers, for a variety of transmission functions, both telecommunication and data.
Unfortunately, RJ-11 modular connectors easily mate with other configurations of modular
: _8 F: {5 k, kconnectors: RJ-12, RJ-45. This sub-clause permits marking only for connectors accessible
7 W3 I% Z, s: Kto Service Personnel and, on the other hand, relying on configuration as a means of
preventing miss-mating is unrealistic.
9 ?7 f8 e: ^( W3 R, r# n/ x; sHow shall these connectors be tested?.
6 w- }# k0 F3 O( wDecision:
If there is a possibility of miss-mating of modular connectors (e.g. RJ-11, RJ-12 etc.)
4 T  l: w( t6 _5 I+ F) t6 m$ aaccessible for the user, tests have to be made to verify that the SELV limits remain.
' l! x/ x" D; \: _+ ~$ {/ ^& lIf the voltage of the TNV-circuit is known this value is used, otherwise the test generator of
9 D9 T8 D! d0 A) g* j6.2.1.3 (Figure 15A) is used for testing. (See also OSM-EE Decision 98/6)

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