Electromagnetic Compatibility (Emc) Specifications; Emissions And Immunity; Electromagnetic Immunity - Philips Avalon CTS M2720A Service Manual

Electromagnetic Compatibility (EMC) Specifications

Electromagnetic Compatibility (EMC) Specifications
The Electromagnetic Compatibility (EMC) specifications in this chapter supplement those given in the
Instructions for Use.

Emissions and Immunity

The product is designed and evaluated to comply with the emissions and immunity requirements of
international and national EMC standards.
The EMC standards state that manufacturers of patient-coupled equipment must specify immunity levels
for their systems. See Tables 1, 2 and 3 for this detailed immunity information. See Table 4 for
recommended minimum separation distances between portable and mobile communications equipment
and the product.
Immunity is defined in the standard as the ability of a system to perform without degradation in the
presence of an electromagnetic disturbance.
Caution should be exercised in comparing immunity levels between different devices. The criteria used for
degradation are not always specified by the standard and can therefore vary with the manufacturer.

Electromagnetic Immunity

The M2720A (referred to in the following sections as the 'device') is suitable for use in the specified
electromagnetic environment. The user must ensure that it is used in the appropriate environment as
described below.
Table 1
Immunity IEC 60601-1-2
Test Test Level
Electrostatic ± 6 kV contact
discharge (ESD) ± 8kV air
IEC 61000-4-2
Electrical fast ± 2 kV for power supply lines
transient/burst ± 1 kV for input/output lines
IEC 61000-4-4
Surge ± 1 kV differential mode
IEC 61000-4-5 ± 2 kV common mode
Voltage dips, <5% U
short (> 95% dip in U
interruptions and
40% U
voltage variations
(60% dip in U
on power supply
70% U
input lines
(30% dip in U
IEC 61000-4-11
< 5% U
(> 95% dip in U
Power frequency 3 A/m
(50/60 Hz)
magnetic field
IEC 61000-4-8
In this table, U
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Compliance Level
± 6 kV contact
± 8kV air
± 2 kV for power supply lines
± 1 kV for input/output lines
± 1 kV differential mode
± 2 kV common mode
0% U
T T
) for 0.5 cycles (100% dip in U
T
40% U
T T
) for 5 cycles (60% dip in U
T
70% U
T T
) for 25 cycles (30% dip in U
T
0% U
T T
) for 5 sec (100% dip in U
T
3 A/m
is the a.c. mains voltage prior to application of the test level.
T
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Electromagnetic Environment Guidance
Floors should be wood, concrete, or ceramic tile. If floors are
covered with synthetic material, the relative humidity should be
at least 30%.
Mains power quality should be that of a typical commercial and/or
hospital environment
Mains power quality should be that of a typical commercial and/or
hospital environment
Mains power quality should be that of a typical commercial and/or
) for 0.5 cycles hospital environment. If the user of the device requires continued
T
operation during power mains interruptions, it is recommended
that the device is powered from an uninterruptible power supply.
) for 5 cycles
T
) for 25 cycles
T
) for 5 sec
T
Power frequency magnetic fields should be a t levels
characteristic of a typical location in a typical commercial and/or
hospital environment
10 Specifications
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