53
Instructions For Use
EN
Appendix 6 EMC Information
A6.1 Electromagnetic Emissions
Guidance and Manufacturer’s declaration - electromagnetic emissions
FTS-3 Fetal Telemetry System is intended for use in the electromagnetic environment specified below. The
customer of the user of FTS-3 should assure that it is used in such and environment.
Emissions Test
Compliance
Electromagnetic Environment - guidance
RF emissions
CISPR 11
Group 1
FTS-3 Fetal Telemetry System uses RF energy only for its internal
function. Therefore, its RF emissions are very low and are not likely
to cause any interference in nearby electronic equipment.
RF emissions
CISPR 11
Class A
FTS-3 Fetal Telemetry System is suitable for use in all
establishments, other than domestic and those directly connected
to the public low-voltage power supply network that supplies
buildings used for domestic purposes.
Harmonic emissions
IEC 61000-3-2
Class A
Voltage fluctuations /
flicker emissions
IEC 61000-3-3
Complies
A6.2 Recommended Separation Distances
Recommended separation distances between portable and mobile RF communications equipment
and the FTS-3 Fetal Telemetry System
The FTS-3 Fetal Telemetry System is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the FTS-3 Fetal Telemetry System can help
prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communications equipment (transmitters) and the FTS-3 Fetal Telemetry System 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
150kHz to 80MHz
d
= 1.2
√
P
80MHz to 800MHz
d
= 1.2
√
P
800MHz to 2.5GHz
d
= 2.3
√
P
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the recommended separation distance
d
in metres (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 80MHz and 800MHz, 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.
