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标题: DSH 716 Probe impedance for plug discharge test [打印本页]

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作者: 小米    时间: 2012-11-8 21:03
标题: DSH 716 Probe impedance for plug discharge test

DSH 716 9 ]* h) J$ Q/ G+ r1 w - e" c4 N$ \' ~- T- 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

( n: Q6 B7 ^5 m& E, mStandard(s): No. Year
9 k7 a3 B8 {# p& \IEC 60065
  p  H. B! F  c1 N' w; QIEC 60335
1 n3 L" c" y, d* @( X6 X# }IEC 60950
IEC 61010
3 r; ~+ ~& L+ p0 ~9 P2 Z+ any other as applicable
DSH-
0716
2008
1 h/ G& ^% R8 L% ~8 `9 ACategory:
( R. d! }4 N/ y2 C- b6 o( u* B$ XHOUS, MEAS, OFF, TRON,
Various…
6 B( x; ]: p2 E; u  n& Z# Q7 g+ OSubclause(s):
* v% `1 R. c' S! O6 t9 |$ y/ a9.1.6
! d( j# A( d5 V8 R22.5
2.1.1.7
6.1.2, 6.10.3
1 M6 A9 V, ^/ b# Y1 S…
Developed by: WG2
3 S0 w+ M( j  H1 a% ~  R1 z# A: _WG4
Subject: Probe impedance for
& X! V' S: Q7 h- |. ]plug discharge test
Key words:
# s( m6 T9 H* Z* X' j; d- Probe impedance
; X+ p. e5 Y, _8 u! _! h/ F- Plug discharge
4 N$ N" q" `0 Q8 T* a- >= 100 M

- 25 pF or less
) ~, |% j5 J3 H8 r, D* i" KDecision approved at the
2009 CTL Plenary Meeting
Question:
7 `% g8 q7 }. [5 a1 l% a$ S4 O  ]" {! }When the plug discharge test is performed using a voltage probe and oscilloscope for
5 V. E) {" L# W5 k7 s) Y+ S/ Adirect measurement of the voltage decay, what probe impedance shall be used to ensure
uniform and comparable results?
  ~, L1 _- Z  R6 t1 S& u. vNote: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
  r5 w5 Z5 v3 R. T1 c  wDecision:
1 F$ O2 O$ o& e8 h+ s- j; HIf the relevant standard does not contain contradictory requirements, a voltage probe
" t5 v% ~  I7 S; c7 G  F) phaving an input impedance of 100 M
or greater in parallel with an input capacitance of
2 w1 e0 H. K; o/ u25 pF or less, shall be used for this test.
For other (automatic) equipment with special measurement techniques equivalent
measures shall be taken to ensure comparable results.
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