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Agency approvals •UL 544 Medical Equipment Standard Part 42.5
•CSA 22.2 No. 950 Canadian Safety Standard
•IEC 950/EN 60950 International Safety Standard
•FCC Part 15 Subpart B level A Electromagnetic Radia-
tion Standard
•AAME 4.3.2 Medical Standard
•UL 1950 Domestic Safety Standard
•SOR/88-475 Canadian Electromagnetic Radiation
Standard
•EN50082-1 International Immunity Standard
•C.I.S.P.R.-22 Class B European Electromagnetic Radia-
tion Standard
Processor 8-bit microcontroller
Power line cord •The overall length must be less than 12.5 ft (3.8 meters)
•It must be rated for at least 3 A, 250 V.
•The chassis ground (earth) MUST be connected to
assure safety and reduce electromagnetic interference.
The ground connection is handled by the third wire
(earth) in the power line cord. See Figure 5.
The AC power plug and IEC 320 connector must bear
the certification mark of at least one international safety
organization. See Figure 6.
Parallel data cable For maximum reliability, use a parallel data cable no
longer than 6 ft (1.8 m).
Figure 5. 230 VAC Power Line Cord
Figure 6. Examples of International Safety Organizations
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