DSH 295 Object

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小型摆管淋雨试验机

IPX5X6X7喷水试验机

1000L恒温恒湿箱

各种试验指现货

可程式恒温恒湿试验箱

水平垂直燃烧机

自动卷线器试验机

耐划痕试验机

各种灯头量规现货

灼热丝试验机现货

GB1002插头量规

IPX1-X7淋雨现货

IEC61347/UL935镇流器热试验箱

灯具防风罩

IK冲击试验机

UL498插头插座量规

VDE0620插头插座量规

稳定性试验台

家电温升测试角

针焰试验机现货

热电偶焊机现货

家电125mm试验指

E12灯头量规

无绳壶无绳电熨斗插拔寿命试验机

IEC60335试验指甲

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DSH 295 - ~& X: y* N% |

Object * I" z- ?0 S1 `8 s& o

1.2

61010-1(ed.1);am1;am2

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Standard:
IEC 61010-1:1990
+A1:1992+A2:1995
Sub clause:
1.2
Sheet n. 295
Page 1(1)
7 I0 O& ^: T, N; j6 E& `Subject:
Object
7 X* U1 H4 ]5 Z3 k4 ?Key words:
  Y6 u8 e( i6 u- Scope
( j, y) G! d4 ~' z! m% S) P- Software Safety
Decision taken by
ETF3 and confirmed
by CTL at its 38th
) u4 ?# M$ i/ f1 wmeeting, in Toronto
+ w8 z. _3 T4 \! I$ ?, |Question:
; `" V% s4 W( K5 z$ \+ x1 b3 PIf safety is dependent on Software, what criteria do laboratories employ to ensure
compliance?
! V9 f8 X9 P4 O& _/ \Decision:
Software safety is not specifically addressed in IEC 61010-1 at present and therefore, there
are no specific guidelines for this work. A draft collateral standard is in preparation and also
IEC 61508 deals with this topic.
$ |/ i  `9 U- N- ~$ nGenerally, it is advised that devices should not be dependent on software alone for their
safety. There should be a separate independent means provided which acts to prevent a
( G3 _; i! k; u5 Bdangerous condition arising.
Explanation:
- u$ n+ D  v( s; M! u) G3 TExperience shows that the analysis of software systems to ensure their safe operation is very
difficult and in practice, can only provide a measure of confidence. Additionally, the
. h5 j8 |; I3 e; D" omethods of performing the examination are not widely agreed upon and therefore, subject to
doubt. In these circumstances, it is preferred to adopt safety limit methods known from
* L) p' s5 t. ?experience to be effective.



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