GE MAC 2000, Service Manual

Page: 170 / 184

Electromagnetic Compatibility (EMC)
Recommended Separation Distances
The following table provides the recommended separation distances (in meters)
between portable and mobile RF communication equipment and the system described
in this manual, for equipment and systems that are not life-supporting.
The system is intended for use in the electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the system can help
prevent electromagnetic interference by maintaining the following recommended
minimum distance between portable and mobile RF communications equipment
(transmitters) and the system, according to the maximum output power of the
communications equipment.
Recommended Separation Distances
Separation distance (meters) according to frequency of transmitter Rated
maximum
output
power of
transmitter
in watts
W
150 kHz to 80 MHz
d (meters) = 3.5/V1 x √P
d (meters) for V1 =
3 Vrms
80 MHz to 800 MHz
d = 3.5/E1 x √ P
d for E1 = 3 V/m
800 MHz to 2.5 GHz
d = 7/E1 x √P
d for E1 = 3 V/m
meters
feet
meters
feet
meters
feet
0.01 0.117 0.383 0.117 0.383 0.233 0.766
0.1 0.369 1.210 0.369 1.210 0.738 2.421
1 1.167 3.828 1.167 3.828 2.333 7.655
10 3.689 12.104 3.689 12.104 7.379 24.208
100 11.667 38.276 11.667 38.276 23.333 76.552
For transmitters rated at a maximum output power not listed above, estimate the
recommended separation distance
d in meters (m) 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 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.
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MAC™ 2000 ECG Analysis System
2053535-003C