SAFETY STANDARDS AND CLASSIFICATION OF THE SYSTEM
SICAT JMT
⁺
Jaw Motion Analysis System
Page 33 of 37
GUIDELINES AND MANUFACTURER'S DECLARATION - ELECTROMAGNETIC INTERFERENCE
IMMUNITY
a The field strengths of fixed transmitters, such as base stations for radio telephones and land mobile
radios, amateur radio, AM and FM radio broadcasters and TV broadcasters, cannot be theoretically
predicted with accuracy. To assess the electromagnetic environment due to the fixed RF transmitters,
an electromagnetic site survey should be considered. If the measured field strength at the location of
the JMT measurement system exceeds the aforementioned compliance level, the JMT measurement
system should be observed to verify its proper functioning. If abnormal performance attributes are
observed, additional measures can be necessary, such as re-orientation or an alternative location of
the measurement system of the JMT range of products.
b Over the frequency range of 150 kHz to 80 MHz, the frequency range should be lower than 3 V/m.
RECOMMENDED SAFETY DISTANCES BETWEEN PORTABLE AND MOBILE RF COMMUNICATION
DEVICES AND THE MEASUREMENT SYSTEMS IN THE JMT RANGE OF PRODUCTS
The measurement systems in the JMT range of products are intended for operation in an
electromagnetic environment in which radiated RF interference is controlled. The customer or the user
of the JMT measurement system can help prevent electromagnetic interference by maintaining a
minimum clearance between portable and mobile RF communication devices (transmitters) and the
JMT measurement system - depending on the output power of the communication device as stated
below.
Rated output of
transmitter W
Safety distance depending on the transmitter frequency
m
150 kHz to 80 MHz
80 MHz to 800 MHz
800 MHz to 2.5 GHz
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
For transmitters whose maximum rated output is not stated in the above table, the recommended
safety distance d in meters (m) can be estimated using the equation applicable to the corresponding
column, where P is the rated output of the transmitter in watts (W) according to the information of the
transmitter manufacturer.
NOTE 1 At 80 MHz and 800 MHz, the higher frequency range applies.
NOTE 2 These guidelines may not apply in all cases. Electromagnetic propagation is affected by
absorption and reflection from buildings, objects and people.
