Recommended Separation Distances; Compliant Cables And Accessories - GE Corometrics 250cx Series Service Manual

Appendix C: Electromagnetic Compatibility
C.3 Recommended Separation Distances
The table below provides the recommended separation distances (in meters) between portable and mobile RF
communications equipment and the Corometrics
The monitor unit is intended for use in the electromagnetic environment on which radiated RF disturbances
are controlled. The customer or the user of the monitor unit can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters)
and the monitor unit as recommended below, according to the maximum output power of the communications
equipment.
Rated Maximum Output
Power of Transmitter (W)
0.01
0.1
1
10
100
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
a
For transmitters rated at a maximum output power not listed above, the recommended separation distance [d]
in meters (m) can be estimated using the equitation 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: These guidelines may not apply in all instances. Electromagnetic propagation is affected by absorption
and reflection from structures, objects and people.
C.4 Compliant Cables and Accessories
WARNING:
The use of accessories, transducers and cables other than those specified may result in increased
emissions or decreased immunity performance of the equipment or system.
The table below lists cables, transducers, and other applicable accessories with which GE Healthcare claims
EMC compliance.
NOTE: The supplied accessories that do not affect EMC compliance are not included.
146
250cx Series Maternal/Fetal Monitor.
TM
Separation Distance in Meters (m) According to Frequency of Transmitter
150 kHz to 80 MHz
a
d = 1.2√P
0.12
0.38
1.2
3.8
12
2036947-001
80 MHz to 800 MHz
a
d = 1.2√P
0.12
0.38
1.2
3.8
12
© 2013 by General Electric Company. All rights reserved.
800 MHz to 2.5 GHz
a
d = 2.3√P
0.23
0.73
2.3
7.3
23