Culver Mobility ARTEMIS - Electromagnetic Immunity Guidelines; Conducted and Radiation Frequency Immunity

01
Table 3: guidelines and manufacturer declarations~e 1 ectromagnetic immunity-for
non-life-supporting ME devices and ME systems
Guide and manufacturer * s statement-electromagnetic immunity
Electric wheelchairs are expected to be used in the following specified electromagnetic
environment, the purchaser or user shall ensure that it is used in this electromagnetic environment.
Immunity test
GB 9706
Experimental level
Level of
conformity
Electromagnetic
ENVIRONMENT-A guide
Conducted
Radio Frequency GB/T
17626.6
3Vrms
150KHz"80MHz
3V
Portable and Mobile Radio Communicat ion Equipment
shal1 not be used closer to any part of the electric
wheelchair than the recommended isolation di stance,
including cables.
The distance should be calculated due to a formula
corresponding to the transmi tter frequency.
RECOMMENDED SEPARATION DISTANCE: d=l. 2
150 kHz to 80 MHZ;
d=l. 2
80MHz to 800MHz;
d=2. 3
800 MHZ to 2. 5GHz
In the equation*
p----- The transmitter manufacturer
provides the maximum rated output power of the
transmitter in Watts (w) and d-recommended isolation
distance in meters (m).
The field strength of a stat ionary RF engine is determined
by surveying the Electromagnetic Field A, B should be
1ower than the coinc idence level in each frequency range.
Interference may occur near devices marked with the
following symbols.
Radiation Frequency
GB/T 17626.3
3V/m
80MHz~2.5Ghz
3V/m
Note 1: At 80MH and 800mhz frequency points, the formula for the higher frequency band is
used.
Note 2 : These guide 1 ines may not be appropriate in all cases. Electromagnetic propagation is
affected by the absorption and reflection of bui ldings, objects and the human body.
A the field strength of fixed transmitters such as base stations for wireless (cellular/cordless)
telephone and terrestrial mobi1e radio, amateur radio, am and FM radio and television
broadcasting can not be predicted accurately in theory, in order to evaluate the electromagnetic
environment of the fixed RF transmitter, the electromagnetic field survey shou1d be considered.
If the measured equipment or system is located in a location where the field strength is higher than
the RF compliance level used above, the equipment or system shal1 be observed to verify its
normal operation. If abnormal performance is observed, additional measures may be necessary,
such as reorienting or repositioning the device or system. B in the 150kHz ' 80MHz frequency
range, the field strength should be less than 3v/m.