F15 Series Fetal & Maternal Monitor User Manual EMC Information
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antenna and the ME EQUIPMENT or ME SYSTEM maybe reduce to 1m. The 1 m test distance is
permitted by IEC 61000-4-3.
a) For some services, only the uplink frequencies are included.
b) The carrier shall be modulated using a 50% duty cycle square wave signal.
c) As an alternative FM modulation, 50% pulse modulation at 18 Hz may be used because while it
does not represent actual modulation, it would be worst case
A7.4 Recommended Separation Distances
Recommended separation distances between
portable and mobile RF communications equipment and the
F15 Series Fetal & Maternal Monitors
The F15 Series Fetal & Maternal Monitors are intended for use in an electromagnetic environment in
which radiated RF disturbances are controlled. The customer or the user of the F15 Series Fetal &
Maternal Monitors can help prevent electromagnetic interference by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and the F15 Series Fetal
& Maternal Monitors as recommended below, according to the maximum output power of the
communications equipment.
Rated maximum
output power of
transmitter
(W)
Separation distance according to frequency of transmitter (m)
For transmitters rated at a maximum output power not listed above, the recommended separation
distance d in meters (m) can be estimated using the equation applicable to the frequency of the
transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to
the transmitter manufacturer.
NOTE 1: At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
Traditional 510(k) of Fetal & Maternal Monitor
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