安规网

标题: DSH 716 Probe impedance for plug discharge test [打印本页]
作者: 小米    时间: 2012-9-8 13:00
标题: DSH 716 Probe impedance for plug discharge test
DSH 716  {( R+ x* b( k& [7 N# p' B. ?
  S: H  G, c0 v' _
Probe impedance for plug discharge test( b( n  L; y  |, {6 S
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
( H3 m$ ^) z% u2 w0 i' B+ ]4 ^# b
( o0 @# G! l6 n
Question:/ h" e. u& o7 h4 k# A
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?
# Q9 C! p: |( J3 |6 d6 v9 S( lNote: IEC 60950-1/2005 specifies 100 M ± 5 M  in parallel with an input capacitance of 20pF ± 5 pF.
' f: k" a; Y8 M( a+ Q3 y/ F& HDecision:0 c+ @8 n) x( x# N  B2 ^0 y
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.
# t+ ?3 G$ R) E( `2 Q! p$ c+ NFor other (automatic) equipment with special measurement techniques equivalent measures shall be taken to ensure comparable results.
5 h# D" G8 Y2 X
% D' e5 N& P4 p1 [9 r[attach]75709[/attach]1 ?  m0 P0 c$ q, j3 W




欢迎光临 安规网 (http://bbs2.angui.org/) Powered by Discuz! X3.2