DSH 716 Probe impedance for plug discharge test

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DSH 716 5 O5 O# O# o( f

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 " _8 r' J# Q7 {

5 @: U* l4 _2 y* c6 yStandard(s): No. Year
IEC 60065
  i" ^4 g6 X4 `: [3 _. H8 wIEC 60335
  X( w/ x7 a% W& uIEC 60950
IEC 61010
4 `2 H- x- x# j9 Y+ ^2 s/ d/ O$ O+ r+ any other as applicable
3 H2 ^4 s% n; g! S6 _DSH-
0716
  W7 R3 k1 \7 Z2008
' O" D. C8 r2 [( bCategory:
. ?3 E8 ]9 i3 C% o+ h+ _# C3 KHOUS, MEAS, OFF, TRON,
Various…
+ S* m% K& h6 I: p3 ZSubclause(s):
  L: I; o- J1 }8 b' O$ i9.1.6
22.5
2.1.1.7
9 f) X8 N( d) F3 ~6.1.2, 6.10.3
…
Developed by: WG2
' Y9 k% X, d6 k- R/ K( I" u2 m* fWG4
Subject: Probe impedance for
2 f: G/ \2 \- {% `plug discharge test
2 u4 G- s# _8 Y; S* x1 O7 EKey words:
- Probe impedance
- Plug discharge
- >= 100 M

- 25 pF or less
4 g! I3 j  Y' n! bDecision approved at the
2009 CTL Plenary Meeting
Question:
0 N7 T4 l9 k9 \1 W. k) ?When the plug discharge test is performed using a voltage probe and oscilloscope for
' p! [) b  `5 f0 ndirect measurement of the voltage decay, what probe impedance shall be used to ensure
1 Z6 s7 t+ [4 a! E7 |uniform and comparable results?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
If 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.
0 L# G3 d- Y% W4 X' yFor other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.

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