Physical Characteristics - 3M Ranger 145 Manuel D'utilisation

Guidance and manufacturer's declaration – electromagnetic immunity
The model 145 is intended for use in the electromagnetic environment specified below� The customer or the user of the model 145 should assure that it is used
in such an environment�
Immunity Test IEC 60601 test level
Conducted RF 3 Vrms
IEC 61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m
IEC 61000-4-3 80 MHz to 2,5 GHz
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 145 is used exceeds
the applicable RF compliance level above, the model 145 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 145�
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 145
The model 145 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled� The customer or the user of the
model 145 can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment
(transmitters) and the model 145 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
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.
NOTE 1 At 80 MHz and 800 MHz, the separation distance for 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.
Physical characteristics
Dimensions
15�75 in (40 cm) high
20 in (51 cm) wide, 7�75 in (20 cm) deep
Weight
17 lb� (7�7 kg)
Mounting
Dual clamp
Compliance level Electromagnetic environment - guidance
Portable and mobile RF communications equipment should be used no closer to any
part of the model 145, 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
3 Vrms
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
3 V/m
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
Interference may occur in the vicinity of equipment marked with the following symbol:
Separation distance according to frequency of transmitter
150 kHz to 80 MHz
d = 1�2 √ P
0�12
0�37
1�17
3�69
11�67
,should be less than the compliance level in each frequency range
a
m
80 MHz to 800 MHz
d = 1�2 √ P
0�12
0�37
1�17
3�69
11�67
10
�
b
800 MHz to 2,5 GHz
d = 2�3 √ P
0�23
0�74
2�30
7�37
23�30