Stanley T14 - Page 26

T14 Patient and Staff Badges
User Guide 25
a
The compliance levels in the frequency range 80 MHz to 2,7 GHz are intended to decrease the likelihood
that mobile/portable communications equipment could cause interference if it is inadvertently brought into
patient areas. For this reason, an additional factor of 10/3 has been incorporated into the formulae used in
calculating the recommended separation distance for transmitters in these frequency ranges.
b
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 TAG1410 is used
exceeds the applicable RF compliance level above, the TAG1410 should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such as re-orienting
or relocating the TAG1410.
Table 5
Recommended separation distances between portable and mobile RF communications
equipment and the TAG1410
The TAG1410 is intended for use in an electromagnetic environment in which radiated
RF disturbances are controlled. The customer or the user of the TAG1410 can help
prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the TAG1410 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
80 MHz to 800 MHz
𝑑 =
12
10
√
𝑃
= 1.2
√
𝑃
800 MHz to 2,7 GHz
𝑑 =
23
10
√
𝑃 = 2.3
√
𝑃
0.01
0.1
1
10
100
For transmitters rated at a maximum output power not listed above, the recommended
separation distance d in metres (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 800 MHz, the separation distance for the higher frequency range applies.
NOTE 2 An additional factor of 10/3 has been incorporated into the formulae used in
calculating the recommended separation distance for transmitters in the the frequency
range 80 MHz to 2,7 GHz to decrease the likelihood that mobile/portable