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| DSH 716
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| Probe impedance for plug discharge test
. d* f. L4 w7 V% w. a% o | 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
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Question:
/ l; Q% R) ~. H6 i" e( zWhen 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?
* q! o# G6 n( U6 @* ?Note: IEC 60950-1/2005 specifies 100 M ± 5 M in parallel with an input capacitance of 20pF ± 5 pF.7 E' @7 J' }$ }
Decision:4 d8 p1 I0 V4 L4 s5 C$ Z) E0 f
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.; I; {7 W$ M2 \: n
For other (automatic) equipment with special measurement techniques equivalent measures shall be taken to ensure comparable results.
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