DSH 716 Probe impedance for plug discharge test

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DSH 716 + U6 x3 W) D2 ]4 l+ i; w

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 % g  B- A0 Z* Y

Standard(s): No. Year
IEC 60065
IEC 60335
IEC 60950
IEC 61010
5 O: ^! }1 f" M; s) i+ any other as applicable
DSH-
0716
2008
Category:
) E. H0 ?2 _9 l' J  X/ DHOUS, MEAS, OFF, TRON,
Various…
( c' S  O/ l* I* wSubclause(s):
2 b. {+ x8 I0 n9.1.6
. K7 N. u$ w3 K- q; ?3 W22.5
2.1.1.7
6.1.2, 6.10.3
…
# _/ ^& D" Z1 b) p3 q; C; `& tDeveloped by: WG2
: e! V+ h$ c6 E, oWG4
& }2 u3 h' Q8 b3 LSubject: Probe impedance for
& `) @2 l, \% G$ Y6 _plug discharge test
, T8 T' `) S: z: D" d& |! uKey words:
- Probe impedance
: H; B' W1 g5 V+ |" R- Plug discharge
- >= 100 M

1 X* F' n  R" C1 _+ H5 h- 25 pF or less
9 Q  E+ _+ K) g6 [& }Decision approved at the
! _" R  a9 `% w# L2009 CTL Plenary Meeting
0 ~, I) [  |- Y3 i% ]Question:
3 P: b5 s: K1 E$ Q8 K3 Y: u, LWhen the plug discharge test is performed using a voltage probe and oscilloscope for
4 V) P1 K; E6 C5 D' V/ mdirect measurement of the voltage decay, what probe impedance shall be used to ensure
: T5 U2 s( D; h5 H# m, Z  ?& euniform and comparable results?
Note: IEC 60950-1/2005 specifies 100 M
± 5 M
in parallel with an input capacitance of 20pF ± 5 pF.
Decision:
5 ]: ?. q' E$ g# ?' F: y: f* cIf 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.
7 F) Y' N8 Q3 a) L9 i- D, [& lFor other (automatic) equipment with special measurement techniques equivalent
  I- K# U) G" u0 G2 l2 Gmeasures shall be taken to ensure comparable results.

8 j$ p! ^# u3 }9 s  [