DSH 716 Probe impedance for plug discharge test

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DSH 716 . Z* k: X7 b5 D+ N% S" u' q/ e " v% |& \! I( n/ v  I

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 6 K7 v  i1 b5 t5 I5 B' _7 M

Standard(s): No. Year
  W& x4 K6 A7 C* Y7 VIEC 60065
6 ~8 V3 Y0 ~* q) X5 s) KIEC 60335
IEC 60950
% [! l$ _6 c: R, V+ ]IEC 61010
+ any other as applicable
DSH-
1 H" R5 w1 Y5 _( c0716
) d# @- u0 _% T& D2008
Category:
4 z! \9 n% R- `9 P8 IHOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
9.1.6
- w9 q  I% u- f/ d; i0 }22.5
2.1.1.7
5 P& ]) s; p7 L) {6.1.2, 6.10.3
3 |# h  u1 }+ H4 R* @2 H  S…
' E# R$ H; [% V' p6 ^' r, KDeveloped by: WG2
& `4 h3 L  `& n7 T" O* pWG4
+ p+ B; ?  A0 y' Q& Q7 K; J! VSubject: Probe impedance for
plug discharge test
Key words:
) ^+ M( X9 Q9 r7 A) m5 K- Probe impedance
5 ~6 S0 C( E) S* a; L: e4 T- Plug discharge
- >= 100 M

# \8 F5 Y0 G3 z/ P# {- 25 pF or less
Decision approved at the
6 V- s% H9 S1 x4 {+ Z2009 CTL Plenary Meeting
0 [# G8 [6 G/ Q# a, VQuestion:
( T$ L% F5 |  \  ?7 w) b0 {When the plug discharge test is performed using a voltage probe and oscilloscope for
5 R, ^$ K5 I% rdirect measurement of the voltage decay, what probe impedance shall be used to ensure
uniform and comparable results?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
8 i; v1 {# m5 Z' H$ JDecision:
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.
For other (automatic) equipment with special measurement techniques equivalent
2 \7 i3 P2 `! mmeasures shall be taken to ensure comparable results.
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