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|  DSH 290
; ~% `# H- ?( r$ p1 A: M" ?" g2 C) k8 y" l! R1 U
| Miss-mating of connectors
- W! t% A0 ~, [. k; M1 S | 4.3.174 E9 X% s$ S% G/ N1 t. j, ]3 D8 _2 L/ J
| 60950(ed.2)
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% }9 G. _6 K7 YStandard: IEC 60950 Ed. 2 Clause: 4.3.17 Sheet n. 290
( v! r% Y1 C0 W8 C; y1 ]Page 1(1)
" n5 _" `6 r, [0 B! `9 Q- ASubject: Miss-mating of connectors Key words:' K0 w c1 i7 u+ y
- Modular( j B8 z* L/ F% F' x: [7 y, x/ ^
connector
/ B4 J' l7 x" \0 l+ ]' N- Miss-mating4 ] w+ i+ `: [) R
Decision n. 23/36: V5 `# S/ O1 |- R B; @. }
taken at 36th
- V; {9 T7 [) p2 L' Z/ `6 Zmeeting/1999
( j5 u# s- Y! P. E* X0 CQuestion:
4 t) @9 U9 D" TIt is very common to use modular connectors (e.g. RJ-11, RJ-12, RJ-45), accessible to the' p" @6 {3 @) @3 l, ^6 D6 u
users, for a variety of transmission functions, both telecommunication and data./ t, X; U+ k% W% X2 K
Unfortunately, RJ-11 modular connectors easily mate with other configurations of modular0 y. s4 x7 h# m! S& l& ^/ p, B
connectors: RJ-12, RJ-45. This sub-clause permits marking only for connectors accessible
& t t; N8 o$ Z, j, Kto Service Personnel and, on the other hand, relying on configuration as a means of
* s. d. i' m( W4 Opreventing miss-mating is unrealistic.8 _+ y P" ?0 Y# F3 }0 x' o
How shall these connectors be tested?.
8 K/ ]9 ~3 T& d. V1 I$ WDecision:, a$ {* C$ R! j# q' O8 S! |6 B
If there is a possibility of miss-mating of modular connectors (e.g. RJ-11, RJ-12 etc.)3 N! n5 G% Z" h
accessible for the user, tests have to be made to verify that the SELV limits remain.: Y0 G; r+ o- |$ h2 [& X
If the voltage of the TNV-circuit is known this value is used, otherwise the test generator of
2 D) c* }; z8 h9 D- Y( [8 K( c6.2.1.3 (Figure 15A) is used for testing. (See also OSM-EE Decision 98/6)
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