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本帖最后由 zhangfc 于 2015-6-26 19:16 编辑
% b+ U( I! p2 d6 F$ F2 C让梦飞翔 发表于 2015-6-26 16:58 
9 u' k' C# R' @7 g还没查到哪里有的买?
8 M( |1 W( n3 f: b这个东西,我们实验室有。好像从顺德商检局或质监局买的。
+ E5 U3 ?1 e2 C; {2 S, ~6 c0 w+ D! B2 {2 Z. g( |7 X
这玩意只能测220V以上的,120V左右的测不了。# l2 R# V: n' F5 k
DSH-0716 l/ y6 ]0 V, ^0 E. v2 c. r: s9 m
If the relevant standard does not contain contradictory requirements, a voltage probe6 B: J% @* J/ l9 v1 F4 k- f* o
having an input impedance of 100 MΩ or greater in parallel with an input capacitance of
- C( ]: X7 k* c( ]( d25 pF or less, shall be used for this test.
( D- U* e) [) x1 z9 W( I+ h$ k; i7 V# O# eFor other (automatic) equipment with special measurement techniques equivalent
0 g; |" q+ |9 Zmeasures shall be taken to ensure comparable results.3 t' l0 J+ x# z) A- x
Explanatory Notes:* [, R. Q( K; k0 L9 B* }: D
This issue was raised at the 2008 CTL meeting after discussing the proficiency testing
: m8 Q! w0 {0 _) _. {+ T: Uprogram on plug discharge 2007/2008. Participants used several different probe
* `: Y: k+ Z+ {# ~0 c5 ?3 Jimpedances, which caused inconsistent results. |
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