Table of Contents
Advertisement
22 Annex
Electromagnetic immunity, IEC 60601-1-2: 2015
Immunity test
IEC 60601
test level
Conducted RF
3 V
eff
IEC 61000-4-6
150 KHz to
80 Mhz
6 V in ISM-
and amateur radio
frequency bands
between 150 kHz
and 80 MHz
80% AM to 1 kHz
3 V/m
Radiated RF
80 MHz to 2,7 GHz
IEC 61000-4-3
80% AM at 1 kHz
Note 1:
At 80 Hz 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. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land
mobile radios, amateur radios, AM and FM radio broadcast, and TV broadcast cannot be predicted theoretically
with accuracy. To assess the electromagnetic environment due to fixed RF transmitters, and electromagnetic
site survey should be considered. If the measured field strength in the location in which the Myopia Master®
is used exceeds the applicable RF compliance level above, the Myopia Master® should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-
orienting or relocating the Myopia Master®.
b. Over the frequency range 150 KHz to 80 MHz, field strengths should be less than 3 V/m.
76 / 84
Compliance level
Electromagnetic environment - Guidelines
Portable and mobile RF communications
equipment should be used no closer to any part
of Myopia Master®, including cables, than the
recommended separation distance calculated
from the equation applicable to the frequency of
the transmitter.
Recommended separation distance
d
=
d
=
V
= 3 V
eff
d
=
where P is the maximum output power rating of
the transmitter in watts (W) according to the
transmitter manufacturer and d is the
recommended separation distance in metres (m).
Field strength from fixed RF transmitters, as
determined by an electromagnetic site survey
(a), should be less than the compliance level in
each frequency range (b).
Interferences may occur in the vicinity of
equipment marked with the following symbol:
Instruction Manual Myopia Master® (G/68100/EN Rev08)
3 5 ,
----------- -
P
(
)
V 1
3 5 ,
-----------
P
80MHz to 800 MHz
(
)
E 1
7
-----------
P
800 MHz to 2.5 GHz
(
)
E 1
Advertisement
Table of Contents
