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|  DSH 2901 E3 O- X; u# g( p4 l+ ]
3 y. }8 p( X0 k+ D) \- P
| Miss-mating of connectors4 ~9 e) D4 `! {
| 4.3.17" B3 O- y7 V2 _& N5 E
| 60950(ed.2)) [. c: v) C9 Q% C5 P0 t6 V
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( p, k5 B+ M f( M1 BStandard: IEC 60950 Ed. 2 Clause: 4.3.17 Sheet n. 290
: A& m1 C; }5 {/ Y$ o: K/ SPage 1(1)3 g/ v5 \ V0 ~% m. V" E
Subject: Miss-mating of connectors Key words:
/ b4 A- K8 B0 K1 R* K) h- Modular, ~; _' P6 A+ p1 }
connector2 `5 |+ M/ m2 ]3 i y
- Miss-mating) P0 Q" S6 r" U' ~, M
Decision n. 23/36
2 L& a+ \! _* G, [3 \' mtaken at 36th. v ]7 |& V9 r K. |- ~4 R
meeting/1999
5 K, i. |1 }; [; Z$ g- y9 dQuestion:0 E* d8 G! ?" q" {
It is very common to use modular connectors (e.g. RJ-11, RJ-12, RJ-45), accessible to the2 _& p" {, K7 z# K$ d% h o" e# G
users, for a variety of transmission functions, both telecommunication and data.; L1 q4 S" v0 e8 ]6 g8 y9 V
Unfortunately, RJ-11 modular connectors easily mate with other configurations of modular
+ y8 p) a9 b1 Y9 v7 l& @connectors: RJ-12, RJ-45. This sub-clause permits marking only for connectors accessible/ z: [: o* \6 _) r5 {* {
to Service Personnel and, on the other hand, relying on configuration as a means of b# n/ Y* @! q
preventing miss-mating is unrealistic.
' |% W" h7 y2 {: A+ m* K0 S) }How shall these connectors be tested?.5 c H7 ~5 O' C7 u! T+ O8 ]& J$ a% Y
Decision:9 c4 e0 D/ ^# G
If there is a possibility of miss-mating of modular connectors (e.g. RJ-11, RJ-12 etc.)
m3 o8 e" f5 v. Taccessible for the user, tests have to be made to verify that the SELV limits remain.6 O/ W6 [4 i( V0 s
If the voltage of the TNV-circuit is known this value is used, otherwise the test generator of1 f' \; r: n$ X0 n8 O R
6.2.1.3 (Figure 15A) is used for testing. (See also OSM-EE Decision 98/6) x" Y+ e/ Q$ B" n. f6 G. p
% y( F, s. B! Q% C( G3 E4 L" J8 G/ W1 p) g4 n* L# P B5 v
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