Welch Allyn RETeval-DR Directions For Use Manual page 54

50 Standards and compliance
Immunity test
Recommended Separations Distances for the RETeval-DR device
The RETeval-DR device is intended for use in the electromagnetic environment in which
radiated disturbances are controlled. The customer or user of the RETeval-DR device can
help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF Communications Equipment and the RETeval-DR device as
recommended below, according to the maximum output power of the communications
equipment.
Max Output Power
(Watts)
0.01
0.1
1
10
100
Compliance level
IEC 60601
Test level
Separation (m) Separation (m)
150 kHz to 80 MHz 80 MHz to 800 MHz
D = (1.17) √P D = (1.17) √P
0.117 0.117
0.369 0.369
1.17 1.17
3.69 3.69
11.7 11.7
®
Welch Allyn RETeval-DR
Electromagnetic
environment–guidance
vicinity of equipment containing a
transmitter.
Separation (m)
800 MHz to 2.5 GHz
D = (2.33) √P
0.233
0.738
2.33
7.38
23.3
™