www.stryker.com SM-7100 REV 01 101
EMC information
(Continued)
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 SV1 is used exceeds the applicable RF
compliance level above, SV1 should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as reorienting or relocating SV1.
b
Over the frequency range 150 kHz to 80 MHz, field strengths are less than 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and SV1
SV1 is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The
customer or the user of SV1 can help prevent electromagnetic interferences by maintaining a minimum distance
between portable and mobile RF communications equipment (transmitters) and SV1 as recommended below,
according to the maximum output power of the communications equipment.
Rated maximum output
power of transmitter
W
Separation distance according to frequency of transmitter
m
150 kHz to 80 MHz
D=(1.2) (√P)
80 MHz to 800 MHz
D=(1.2) (√P)
800 MHz to 2.5 GHz
D=(2.3) (√P)
0.01 1.12 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 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.
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