F9, F9 Express Fetal & Maternal Monitor User Manual EMC Information
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A7.4 Recommended Separation Distances
Recommended separation distances between
portable and mobile RF communications equipment and the
F9 and F9 Express Fetal & Maternal Monitors
The F9 and F9 Express 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 F9
and F9 Express Fetal & Maternal Monitors can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the F9 and F9 Express 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.