Hi Pierre, How is the skiing this year?
Regarding your question, you need to look at the system standard, 60601-1-1, for interconnecting components of a medical electrical system. Generally, a computer does not meet the enclosure leakage requirements and thus requires some kind of an isolation device between the computer and the medical device. This could be an optical coupled RS 232 port as you described. This maybe the best way to achieve electrical safety. There are other ways such as the use of the EQUAL POTENTIAL GROUND wire. This is a quick answer but you need to study 60601-1-1 to determine the correct method of protection and also labeling requirements. Best of luck and Happy New Year. Jim -----Original Message----- From: owner-emc-p...@majordomo.ieee.org [mailto:owner-emc-p...@majordomo.ieee.org]On Behalf Of Pierre SELVA Sent: Thursday, December 27, 2001 4:25 PM To: Forum Safety-emc Subject: IEC 601-1 : Insulation between applied part and signal input Hello from the Franch Alps, I need your help to determinate which insulation is required between an applied part (lin to the OV of the product thru a capacitor) and one signal input in a medical product, against IEC 601-1 requirements. The signal input is connected to the parallel port of a computer. I understand that the insulation has to be a supplementary one. Does this mean that I need to have a galvanic insulation (with optocoupleur, for example) or can I use another system ? Thanks a lot for your contribution. Bonnes fêtes de fin d'année et meilleurs voeux pour 2002 (happy new year and best whishes !) ======================================== eLABs Pierre SELVA 18 Rue Marceau Leyssieux 38400 SAINT MARTIN D'HERES - FRANCE Phone : 33 (0)6 76 63 02 58 Fax : 33 (0)6 61 37 87 48 e-mail : e.l...@wanadoo.fr <mailto:e.l...@wanadoo.fr> ps.el...@laposte.net <mailto:ps.el...@laposte.net> ======================================
