DSH 716 Probe impedance for plug discharge test

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DSH 716

Probe impedance for plug discharge test / c( F" G+ T$ z8 a  T1 l' y

9.1.6 (IEC 60065) 22.5 (IEC 60335) 2.1.1.7 (IEC 60950) 6.1.2, 6.10.3 (IEC 61010) + any other as applicable

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Standard(s): No. Year
IEC 60065
IEC 60335
IEC 60950
9 U2 \2 {% O: y% z5 [2 }  z7 e( RIEC 61010
8 o! X; Q+ ]9 p( C" J7 L6 L4 U+ any other as applicable
2 K0 I. N9 @. H$ \! \$ yDSH-
! @+ x4 X9 p5 }7 L. N0716
2 l" }* }. }3 W$ E" L# o: W  W5 ?2008
Category:
8 b( r* {9 o# o8 vHOUS, MEAS, OFF, TRON,
1 n; `' J; L/ O. N8 }' F# gVarious…
4 ^* X* L6 _7 T' U& ?5 [# |; N* N2 JSubclause(s):
9.1.6
  }* S" C- {( U; ~, X7 e* L22.5
% ^7 L; R: j. v* x) S6 |2.1.1.7
/ _# Y$ ~3 L5 T; V6.1.2, 6.10.3
…
' G  k. D1 g/ R# G+ Y9 bDeveloped by: WG2
  F& g' |  A: L6 T& rWG4
Subject: Probe impedance for
plug discharge test
2 K& e  ~  b& Q8 TKey words:
9 p4 J. I- d% X6 e1 ^1 s- Probe impedance
- Plug discharge
- >= 100 M

4 u. ?; o9 C0 |% z8 \- 25 pF or less
Decision approved at the
9 v  J! \5 k' T) C& ]* U# J2009 CTL Plenary Meeting
8 b5 [- T" z9 q3 C  [% }& hQuestion:
! o' c! C  G7 g  B, qWhen the plug discharge test is performed using a voltage probe and oscilloscope for
direct measurement of the voltage decay, what probe impedance shall be used to ensure
uniform and comparable results?
4 J8 R9 ?. s; z& R! hNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
+ X$ G$ H6 @% u( `$ W% fDecision:
0 ~! ~+ ?; }# Y3 LIf the relevant standard does not contain contradictory requirements, a voltage probe
having an input impedance of 100 M
or greater in parallel with an input capacitance of
5 |; P  k4 _( @! w, v( Z25 pF or less, shall be used for this test.
For other (automatic) equipment with special measurement techniques equivalent
* ~# s. y7 [  P0 ?, i3 L4 T2 Fmeasures shall be taken to ensure comparable results.
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