DSH 716 Probe impedance for plug discharge test

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DSH 716 / n/ @; t0 k4 Z9 e5 ~+ ~

Probe impedance for plug discharge test & |6 c  D( i; n) H

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 3 ]% |5 K# {$ A

9 L8 G, K( q7 cStandard(s): No. Year
5 ~6 \! B5 w0 b: Y% w6 ?* t+ [9 NIEC 60065
IEC 60335
IEC 60950
IEC 61010
0 D- f' r2 K3 H% D: Z+ any other as applicable
DSH-
/ P$ {. w+ k, G6 C: S: v0716
2008
Category:
! }3 b4 I: S+ W$ |4 \0 rHOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
4 [. e8 ~  d& ?" {- D9.1.6
22.5
& S; S# L; y4 h3 Z3 {2.1.1.7
! Q* [& J9 j5 w$ A; V8 V% V6.1.2, 6.10.3
- b" q; N$ Z9 s3 s0 ]. o…
" }8 `: b6 C0 V2 ?. T8 ZDeveloped by: WG2
WG4
Subject: Probe impedance for
& z# g" p- ?4 X$ \8 X9 J& Y1 ?0 Cplug discharge test
  a* K$ ^% ]# N* A2 EKey words:
- Probe impedance
7 z0 F3 Z+ q$ I( u) i7 _- Plug discharge
- >= 100 M

6 y" _1 o! P2 E/ C; A2 k/ T- 25 pF or less
Decision approved at the
2009 CTL Plenary Meeting
3 @0 c6 F+ ]! Q% `5 [2 X, K& |Question:
- r2 E5 {4 ~/ U; b6 I: V* ?! TWhen 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
+ d0 _% F2 B+ X% b  ~+ vuniform 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
/ v1 W, {9 k- `1 ~" Nhaving an input impedance of 100 M
or greater in parallel with an input capacitance of
; a" w, n8 ^% ~, f6 L- q- m25 pF or less, shall be used for this test.
For other (automatic) equipment with special measurement techniques equivalent
; F9 Q+ j9 `2 Smeasures shall be taken to ensure comparable results.


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