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Standard: IEC 60950 Ed. 2 Clause: 4.3.17 Sheet n. 290 / G+ Q* V+ s" g5 S# W( qPage 1(1)2 T" Q2 D: R) ~1 I) p& \; C+ t' ?
Subject: Miss-mating of connectors Key words:0 g" |9 H1 Z1 L) o: C
- Modular0 @9 f( n' q- j _" ?2 Q. t
connector q, s; ?- s4 h* U+ I
- Miss-mating6 n5 X' x/ r u0 j, V
Decision n. 23/363 e* C4 K8 ~4 I. N: \# ]' o9 X
taken at 36th " J6 ~5 Y; s7 d, ~# gmeeting/19992 t/ ^: ?8 u: b! T
Question:# L# E% j6 c& Y- b% Q( g! f* Q
It is very common to use modular connectors (e.g. RJ-11, RJ-12, RJ-45), accessible to the 3 R) y) G. f2 a2 e# d7 Qusers, for a variety of transmission functions, both telecommunication and data. ' L+ D, j, C4 a9 M) r8 v- a9 KUnfortunately, RJ-11 modular connectors easily mate with other configurations of modular 3 @9 p0 \* ]& s8 v" c5 `6 Nconnectors: RJ-12, RJ-45. This sub-clause permits marking only for connectors accessible$ x; e/ X" Q5 I. m) z5 b
to Service Personnel and, on the other hand, relying on configuration as a means of0 [$ x0 o3 C9 o# r" {) V
preventing miss-mating is unrealistic.( P2 f3 q( ^; E( Y
How shall these connectors be tested?.$ X- F* s' C" s4 [' f3 |5 [
Decision:9 B- v( v7 _2 b( Z$ }$ m; |
If there is a possibility of miss-mating of modular connectors (e.g. RJ-11, RJ-12 etc.). ~0 O* u3 m3 E) ] i+ M; a1 C
accessible for the user, tests have to be made to verify that the SELV limits remain. 3 ~, W$ B C: S# K0 f% b0 OIf the voltage of the TNV-circuit is known this value is used, otherwise the test generator of , P6 J, w& {4 a% L0 J! I/ y6.2.1.3 (Figure 15A) is used for testing. (See also OSM-EE Decision 98/6) " N4 `# r5 k5 n. u. [& g+ a+ Y# f& T+ y
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DSH 290