Philips PS27QHDCR User Manual page 32

6. Important information
Immunity test
At 80 MHz and 800 MHz, the higher frequency range applies.
These guidelines may not apply in all situations. Electromagnetic propagation is af-
fected by absorption and reflection from structures, objects and people.
Recommended separation distance
The PS27QHDCR is intended for use in an electromagnetic environment in which radiated RF distur-
bances are controlled. The customer of the user of the PS27QHDCR can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile RF communications equip-
ment (transmitters) and the PS27QHDCR as recommended below, according to the maximum output
power of the communications equipment.
Rated maximum output
power of transmitter
W
0.01
0.1
1
10
100
At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.
2. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur
radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy. To assess the electromagnetic
environment due to fixed RF transmitters, an electromagnetic site survey should be considered. If the measured field strength in the
location in which the PS27QHDCR is used exceeds the applicable RF compliance level above, the PS27QHDCR should be observed
to verify normal operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting or
relocating the PS27QHDCR.
3. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
4. 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.
30
IEC 60601-1-2
Test levels
Separation distance according to frequency of transmitter
4
150kHz to 80MHz
d=1.2√P
0.12
0.38
1.2
3.8
12
Compliance level
80MHz to 800MHz
d=1.2√P
0.12
0.38
1.2
3.8
12
K5902097 (451920611672) PS27QHDCR 22/05/2015
Electromagnetic
environment –
guidance
than the compliance
level in each frequency
3
range.
Interference may occur in
the vicinity of equipment
marked with symbol:
800MHz to 2.5GHz
d=2.3√P
0.23
0.73
2.3
7.3
23