DSH 716 Probe impedance for plug discharge test

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DSH 716 4 \4 g' L( }  t; I3 [

Probe impedance for plug discharge test

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 2 L" c+ a, v! B, G8 _

6 n7 s) o: l' ]- I/ TStandard(s): No. Year
1 n6 w3 @$ S3 g( i- MIEC 60065
6 o5 w* F$ B) p% Z9 sIEC 60335
8 x+ ^$ S: m2 `2 G/ s  S. ^! P9 IIEC 60950
IEC 61010
$ U# i* u9 o3 k, E+ any other as applicable
% y% I, x* r+ s; yDSH-
/ P* I' J* u7 U0716
7 s+ T0 q: n5 }) x2008
Category:
HOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
9.1.6
& g3 ^" z! w# `2 T% @22.5
2.1.1.7
6.1.2, 6.10.3
…
Developed by: WG2
WG4
  T3 \: T! D7 ^& Y8 X& NSubject: Probe impedance for
plug discharge test
Key words:
- Probe impedance
- Plug discharge
- >= 100 M

- 25 pF or less
6 i9 @0 D/ x" g- @- fDecision approved at the
2009 CTL Plenary Meeting
Question:
' f9 C6 n6 ]( @When 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?
- X) x, D4 T$ n2 m8 p! a& ZNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
. f3 r; ]) o6 c: M1 nDecision:
* l) {- B' g( J9 }0 j+ 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
25 pF or less, shall be used for this test.
5 P. @/ [# ]3 ^& V# [; }  TFor other (automatic) equipment with special measurement techniques equivalent
  Y) m8 @. Y5 X# G% i" hmeasures shall be taken to ensure comparable results.
7 A0 Q4 X$ k  R5 O+ r