BT-550 Operation manual
54
P/N : 550-ENG-OPM-EUR-R01
Bistos Co., Ltd.
2018.03
The BT-550 is intended for use in the electromagnetic environment specified below.
The customer or the user of the BT-550 should assure that it is used in such an environment.
Immunity test IEC 60601 test level Compliance
level
Electromagnetic environment -
guidance
Conducted RF
IEC 61000-4-6
Radiated RF
IEC 61000-4-3
IEC 60601-2-21
3 Vrms
150 kHz to 80 MHz
3 V/m
80 MHz to 2.5 GHz
10 V/m
3 Vrms
3 V/m
10 V/m
Portable mobile RF communications
equipment should be used no closer
to any part of the BT-550, including
cables, than the recommended
separation distance calculated from
the equation applicable to the
frequency of the transmitter.
Recommended separation distance
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 deter-mined by an
electromagnetic site survey,
a
should
be less than the compliance level in
each frequency range.
b
Interference may occur in the vicinity
of equipment marked with the
following symbol :
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 BT-550 is used exceeds
the applicable RF compliance level above, the BT-550 should be observed to verify normal
operation. If abnormal performance is observed, additional measures may be necessary, such
as re-orienting or relocating the BT-550.
b
Over the frequency range 150 kHz to 80MHz, field strengths should be less than
3 V/m.
