ACKERMANN 16-2045, Руководство пользователя

Страница: 23 / 25

USER MANUAL 16-2045 Rev. 09/2017
Page 23 of 25
a The field strength of fixed transmitters, like base stations for radio telephones (mobile and fixed
line) and mobile land radio systems, amateur radio systems, AM/FM radio communication systems
and TV systems cannot in theory be evaluated with accuracy. To analyse the electromagnetic
environment due to fixed RF transmitters, on site measurements must be taken. If a field strength
measured in the environment in which this insufflator is used exceeds the applicable compliance
levels shown above, check whether this insufflator is functioning accordingly. If it is observed to be
functioning abnormally, additional measures will have to be taken, such as a change of direction or
repositioning of the referencing system.
b Outside of the 150 khz to 80 Mhz frequency band, the field strength must be lower than 3 V/m.
12.4 Recommended distances between portable and mobile RF communication systems and
this insufflator
This insufflator is designed to be used in an electromagnetic environment in which the RF
interference produced is controlled. The user of this insufflator can help avoid electromagnetic
interference by maintaining a minimum distance between the portable and mobile RF communication
systems (transmitters) and this insufflator, as recommended below, based on the maximum output
strength of the communication system.
Assigned maximum
output strength of
the transmitter in W separation distance depending on the frequency dd of the transmitter m
150 khz to 80
Mhz 80 Mhz to 800
Mhz 800 Mhz to 2.5 ghz
d = 1,16 √ P d = 1,16 √ P d = 2,33 √ P
0.01
0.1
1
10
100 0.116
0.366
1.16
3.66
11.6 0.116
0.366
1.16
3.66
11.6 0.233
0.736
2.33
7.36
23.3
Note 1: at 80 Mhz and 800 Mhz, it is advisable to use the highest band frequency.
Note 2: These recommendation may not be applicable in all situations. The propagation of
electromagnetic waves is modified by absorption and reflection due to structures, objects and
people.
For transmitters for which the maximum output strength is not shown in the table above, the
recommended separation distance d, in metres (m) can be established by using the equation
applicable to the frequency of the transmitter, where P is the maximum output strength of the
transmitter in Watts (W) assigned by the manufacturer of the transmitter.