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Appendix 4 ‒ Use with Non-medical
Electrical Equipment
Any person who connects external equipment to signal input,
signal output or other connectors has created a medical electrical
system and is therefore responsible for the system complying with
the requirements of clause 16 of IEC 60601-1:2005 (General
requirements for basic safety and essential performance).
If connections are made to standard equipment such as printers
and computers, special precautions must be taken in order to
maintain medical safety. The following notes are provided for gui-
dance in making such connections to ensure that the general requi-
rements of clause 16 of IEC 60601-1:2005 are met.
The following signal inputs and outputs on the SD 270 audiometer
are electrically isolated to the requirements of IEC 60601-1 in order
to reduce any potential hazard associated with the use of mains-
powered equipment connected to these inputs and outputs:
Socket Label Socket Type Typical Connection
DATA 6 pin mini DIN Printer
LINE IN 3.5mm jack CD/Tape Player
LINE OUT 3.5mm jack Amplifier
USB USB Connector Computer
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