GE Dash 3000, Service Manual

Page: 284 / 292

A-6 Dash 3000/4000 Patient Monitor Revision A
2000966-339
Appendix A – Electromagnetic Compatibility (EMC): Electromagnetic Compatibility (EMC)
Recommended Separation Distances
The table below provides the recommended separation distances (in
meters) between portable and mobile RF communications equipment and
the Dash 3000/4000 Patient Monitor.
The Dash 3000/4000 Patient Monitor is intended for use in the
electromagnetic environment on which radiated RF disturbances are
controlled. The customer or the user of the Dash 3000/4000 Patient
Monitor can help prevent electromagnetic interference by maintaining a
minimum distance between portable and mobile RF communications
equipment (transmitters) and the Dash 3000/4000 Patient Monitor as
recommended below, according to the maximum output power of the
communications equipment.
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.
Separation Distance in Meters (m) According to Frequency of Transmitter
Rated Maximum Output
Power of Transmitter in
Watts
150 kHz to 80 MHz
a
d = 1.2
80 MHz to 800 MHz
a
d = 1.2
800 MHz to 2.5 GHz
a
d = 2.3
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
a
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
P P P