Instruction For Use PMH7000
Version 2
Revision 03 23 July 2019
Page 9 of 20
Power frequency
(50/60Hz) magnetic field
IEC 61000-4-8
3A/m
3A/m
Power frequency magnetic fields should be at
levels characteristic of a typical location in a
typical commercial or hospital environment.
Portable and mobile RF communications
equipment should be used no closer to any
part of the PMH7000 including cables, than the
recommended separation distance calculated
from the question applicable to the frequency
of the transmitter.
Recommended separation distance
Conducted RF
IEC 61000-4-6
3Vrms
150kHz to 80 MHz
3V
d
=1.2
√
P
Radiated RF
IEC 61000-4-3
3V/m
80MHz to 2.5GHz
3V/m
d
=1.2
√
P
80MHz to 800MHz
d
=2.3
√
P
800MHz to 2.5GHz
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
meters(m).
Field strengths from fixed RF transmitters, as
determined by an electromagnetic site survey
a
should be less than the compliance level in
each frequency range
b
Interference may occur in the vicinity of
equipment marked with the following symbol:
NOTE 1 At 80MHz and 800MHz, 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 radio, AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with
accuracy. To assess electromagnetic environment due to fixed RF transmitters, an electromagnetic sites survey
should be considered. If the measured field strength in the location in which the PMH7000 is used exceeds the
applicable RF compliance level above, the PMH7000 should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating the PMH7000.
b
Over the frequency range 150kHz to 80MHz, field strengths should be less than 3V/m.
N/A: not applicable, this test item does not have to be performed.
*The test on signal ports is not applicable since the signal cables are not longer than 3m according to the manufacturer
’s
specification.
Recommended separation distances between
portable and mobile RF communications equipment and the PMH7000
The PMH7000 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled.
The customer or the user of the PMH7000 can help prevent electromagnetic interference by maintaining a minimum
distance between portable and mobile RF communications equipment (transmitters) and the PMH7000 as
recommended below, according to the maximum output power of the communications equipment.
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150kHz to 80MHz
d
= 1.2
√
P
80MHz to 800MHz
d
= 1.2
√
P
800MHz to 2.5GHz
d
= 2.3
√
P
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
