DSH 716 Probe impedance for plug discharge test

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DSH 716 9 T9 q. ]/ p* R) g6 s' k

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 ; \: O" _3 X% T! f% X! n3 u* Z( p

( t0 a0 M( L0 q; b1 M9 IStandard(s): No. Year
IEC 60065
IEC 60335
IEC 60950
IEC 61010
8 I9 u8 i4 z$ i5 W+ any other as applicable
DSH-
- Z) e8 E/ }5 z: H; j7 m5 T0716
0 P; ]2 E; D, H- S+ O2008
# ?6 t( n% G6 T4 R9 {Category:
- X( t# B; e, O! T- YHOUS, MEAS, OFF, TRON,
Various…
Subclause(s):
9.1.6
22.5
; m1 G. n' E; o6 x# b2.1.1.7
6.1.2, 6.10.3
…
! c6 a' o9 o/ y# @7 xDeveloped by: WG2
WG4
Subject: Probe impedance for
plug discharge test
0 Q) A' Z9 }9 `4 _2 O6 W0 IKey words:
% ^/ E! M- r9 H6 X2 Y/ S- Probe impedance
- Plug discharge
- >= 100 M

  t- q( |9 `" m$ O8 o- 25 pF or less
Decision approved at the
2009 CTL Plenary Meeting
3 ^7 V  v7 x/ sQuestion:
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?
# p6 ~2 ?3 R$ U- A1 x) A! DNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
1 Y7 y9 T' f8 m# zIf 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.
. ^- m3 y# o/ }1 b, C' EFor other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.


! D- F! A% S( ]# @7 ?5 U