Stryker 240-020-505 Instructions Manual page 7

Guidance and Manufacturer's declaration-electromagnetic immunity
The Model 240-020-505 is intended for use in the electromagnetic environment specified below.
The customer or the user of the Model 240-020-505 should assure that it is used in such an environment.
Immunity Test IEC/EN 60601
Test Level
RF Common mode/ 3 Vrms
Conducted
Susceptibility
IEC/EN 61000-4-6 150 kHz to 80 MHz
Radiated RF 3 V/m
Electromagnetic
Fields
IEC/EN 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.
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 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 240-020-505 is
used exceeds the applicable RF compliance level above, the Model 240-020-505 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 240-020-505.
b Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Compliance Level Electromagnetic environment-
guidance
Portable and mobile RF communications
equipment should be used no closer
to any part of the Model 240-020-505,
including cables than the recommended
separation distance calculated from
the equation applicable to the
frequency of the transmitter.
Recommended separation distance
3 Vrms d =1.2
3 V/m d =1.2 : 80 MHz to 800 MHz
d =2.3 : 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,
be less than the compliance level in
b
each frequency range.
Interference may occur in the vicinity
of equipment marked with the
following symbol:
Recommended separation distance between portable and mobile RF communications
equipment and the Model 240-020-505
The Model 240-020-505 is intended for use in the electromagnetic environment in which radiated RF disturbances are
controlled. The customer or the user of the Model 240-020-505 can help prevent electromagnetic interference by
maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the
Model 240-020-505 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 watt (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.
a should
separation distance according to frequency of transmitter
m
150 kHz to 80 MHz 80 MHz to 800 MHz
d =1.2 d =2.3
0.12 0.12
0.38 0.38
1.2 1.2
3.8 3.8
12 12
800 MHz to 2.5 GHz
d =1.2
0.23
0.73
2.3
7.3
23