DSH 716 Probe impedance for plug discharge test

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DSH 716 3 s2 b- S5 D, Y& i& U 0 J, [6 ]* [- A9 A4 y) \& T( l, Q

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

Standard(s): No. Year
5 G, ]1 C5 q8 t) o* N* |IEC 60065
- Y1 U& `: {# i9 cIEC 60335
IEC 60950
IEC 61010
) l/ T( {% H' y) H. P' [% `+ any other as applicable
DSH-
# L" }! X: a6 B# T0716
8 m8 F% o) G+ V' y2008
Category:
$ a4 A( R( ^1 e1 w$ QHOUS, MEAS, OFF, TRON,
* n: Y3 {  ?3 ?0 E# r, ~Various…
Subclause(s):
1 W  d6 }' a/ R( b6 ]  M2 ]9.1.6
- t* [/ [. _8 T* o6 a# b22.5
9 e0 p/ d. E4 y% P1 i; h2.1.1.7
6.1.2, 6.10.3
…
, @, D5 v4 r7 ^3 ODeveloped by: WG2
WG4
/ q( V: ]2 ?0 O3 Z, H* f9 K* bSubject: Probe impedance for
plug discharge test
* l" h# s  ^. z& ^/ B3 bKey words:
% _9 ]2 b$ i1 ?5 z, e1 O" L- Probe impedance
5 P$ y& y) [7 F5 R3 {0 d$ Q3 `0 ]- Plug discharge
- >= 100 M

- 25 pF or less
: K8 r5 Z/ ^0 DDecision approved at the
9 C: H% L/ @$ |: D$ ~) k2009 CTL Plenary Meeting
Question:
When the plug discharge test is performed using a voltage probe and oscilloscope for
+ H6 R, }: b9 M7 wdirect measurement of the voltage decay, what probe impedance shall be used to ensure
: e3 b5 [& Z0 {# \uniform and comparable results?
2 `4 b& W: X' D, yNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
+ u5 b; b+ b3 \0 `+ LIf the relevant standard does not contain contradictory requirements, a voltage probe
1 y! [8 }3 _1 m( O" K( k: T" phaving 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.
7 e7 U* U( ~! W6 TFor other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.
- {8 X/ T. t% [% A1 A2 S