3M Ranger 245 Operator's Manual page 10

Surge
IEC 61000-4-5
Voltage dips, short
interruptions and voltage
variations on power supply
input lines
IEC 61000-4-11
Power frequency (50/60 Hz)
magnetic field
IEC 61000-4-8
NOTE U is the a.c. mains voltage prior to application of the test level.
T
Guidance and manufacturer's declaration – electromagnetic immunity
The model 245 is intended for use in the electromagnetic environment specified below. The customer or the user of the model 245 should assure that it is
used in such an environment.
Immunity Test
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
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.
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land mobile radios, amateur radio, AM and
a
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 model 245 is used
exceeds the applicable RF compliance level above, the model 245 should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as re-orienting or relocating the model 245.
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
b
Recommended separation distances between portable and mobile RF communications equipment and the model 245
The model 245 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of
the model 245 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications
equipment (transmitters) and the model 245 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
1± kV line to line 1± kV line to line
2± kV line to gnd 2± kV line to gnd
<5% U <5% U
T
(>95% dip in U ) (>95% dip in U
T
for 0,5 cycle for 0,5 cycle
40% U 40% U
T
(60% dip in U ) (60% dip in U
T
for 6 cycles for 6 cycles
70% U 70% U
T
(30% dip in U ) (30% dip in U
T
for 30 cycles for 30 cycles
<5% U <5% U
T
(>95% dip in U ) (>95% dip in U
T
for 5 sec for 5 sec
3 A/m 3 A/m
IEC 60601 test level Compliance level
3 Vrms 3 Vrms
150 kHz to 80 MHz
3 V/m 3 V/m
80 MHz to 2,5 GHz
150 kHz to 80 MHz
d = 1.2√P
0.12
0.37
1.17
3.69
11.67
Mains power quality should be that of a typical commercial or hospital
environment.
Mains power quality should be that of a typical commercial or hospital
T
) environment. If the user of the model 245 requires continued operation
T
during power mains interruptions, it is recommended that the model 245
be powered from an uninterruptible power supply or a battery.
T
)
T
T
)
T
T
)
T
Power frequency magnetic fields should be at levels characteristic of a
typical location in a typical commercial or hospital environment.
Electromagnetic environment - guidance
Portable and mobile RF communications equipment should be used
no closer to any part of the model 245, including cables, than the
recommended separation distance calculated from the equation
applicable to the frequency of the transmitter.
Recommended separation distance
d = 1.2√P
d = 1.2√P 80 MHz to 800 MHz
d = 2.3√P 800 MHz to 2,5 GHz
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
in each frequency range
equipment marked with the following symbol:
Separation distance according to frequency of transmitter
80 MHz to 800MHz
d = 1.2√P
0.12
0.37
1.17
3.69
11.67
8
, should be less than the compliance level
a
. Interference may occur in the vicinity of
b
m
800 MHz to 2,5 GHz
d = 2.3√P
0.23
0.74
2.30
7.37
23.30