Recommended Separation Distances - BCI WW1020 Operation Manual

Appendix A: Guidance and Manufacturer's Declaration

Recommended Separation Distances

RECOMMENDED SEPARATION DISTANCE BETWEEN PORTABLE AND MOBILE
RF COMMUNICATIONS EQUIPMENT AND THE WW1020/WW1000 PULSE OXIMETER
The WW1020/WW1000 pulse oximeter is intended for use in the electromagnetic environment
in which radiated RF disturbances are controlled. The customer or the user of the WW1020/
WW1000 pulse oximeter can help prevent electromagnetic interference by maintaining a
minimum distance between portable and mobile RF communications equipment (transmitters)
and the WW1020/WW1000 pulse oximeter as recommended below, according to the maximum
output power of the communication equipment.
RATED MAXIMUM
OUTPUT POWER
OF TRANSMITTER
W
150 kHz to 80 MHz
0.01
0.1
1
10
100
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 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.
A-4
SEPARATION DISTANCE ACCORDING TO
FREQUENCY OF TRANSMITTER
80 MHz to 800 MHz
3 V/m
d = 1.2√P
d=1.2√P
.12 0.12
.38 0.38
1.2 1.20
3.8 3.79
12 12.00
m
800 MHz to 2.5 GHz
20 V/m 3 V/m
d = 0.18√P d=2.3√P
0.02 0.23
0.06 0.73
0.18 2.30
0.57 7.27
1.80 23.00
Clinician's Operation Manual
20 V/m
d = 0.35√P
0.04
0.11
0.35
1.11
3.50