DSH 716 Probe impedance for plug discharge test

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DSH 716 1 K/ |* Z& B6 `* W& u * R9 S3 w1 L# W( s" ^& ~

Probe impedance for plug discharge test 2 a! A3 G: x! b, J

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

% F) P6 [0 B7 l! t  @3 \" eStandard(s): No. Year
IEC 60065
4 N& \1 V% }& }: m" ^, bIEC 60335
) a4 L3 ?6 F: S! C6 YIEC 60950
7 G2 F. I+ e* ~+ P9 yIEC 61010
+ any other as applicable
$ ^  M3 P4 D, N' fDSH-
+ O% f. p: h: J0 C1 z0716
2008
/ `- Y# b  [: E6 uCategory:
HOUS, MEAS, OFF, TRON,
Various…
( f8 h8 h& A- @. Z: U1 T0 WSubclause(s):
9.1.6
' f% ]5 k& K8 x4 s. p22.5
2.1.1.7
6.1.2, 6.10.3
( z, `& @" f' W4 m% r6 Z8 M9 V2 ^…
3 z; `( Q7 x+ CDeveloped by: WG2
WG4
Subject: Probe impedance for
  g! e& T) x4 c5 m, lplug discharge test
$ f1 L) Z* F4 _( t, z2 h6 o* s: I( EKey words:
) t) W$ ~. }7 v" k# _% |- Probe impedance
- X+ H/ f- B1 y1 \% y3 I4 _. L  p) o- Plug discharge
7 B2 y; _# @. U# K. F- >= 100 M

0 W. |) r% w$ w3 d! c* J9 H5 H1 N- 25 pF or less
Decision approved at the
8 y2 L8 z% b. i. I  d  O% \  h$ G2009 CTL Plenary Meeting
Question:
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
7 A+ j2 X/ R9 z9 j4 m9 }uniform and comparable results?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
4 E5 }3 R# }! d7 E: nDecision:
! C; Q, U0 c5 a& B9 c4 ?If the relevant standard does not contain contradictory requirements, a voltage probe
4 u/ `4 X: L: P8 |+ O: m9 |having an input impedance of 100 M
or greater in parallel with an input capacitance of
' E7 w7 @3 |& b+ `9 t, L25 pF or less, shall be used for this test.
2 b+ [& z( Y8 WFor other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.