NHS ODFS Pace V1 - Page 51

51
Electromagnetic Compliance
Manufacturer’s declaration of electromagnetic immunity continued
Immunity test IEC 60601
test level
Compliance
level
Electromagnetic environ-
ment - guidance
Portable and mobile RF communications equipment should be used no closer to any part
of the ODFS
®
Pace (XL), including cables, than the recommended separation distance
calculated from the equation applicable to the frequency of the transmitter.
Conducted RF
IEC 61000-4-6
3 Vrms (150
kHz to 80
MHz)
6 Vrms in
ISM bands
3 Vrms (150
kHz to 80
MHz)
6 Vrms in
ISM bands
Recommended separation
distance:
d = 1.2 * √P
Radiated RF
IEC 61000-4-3
10 V/m
80 Mhz to
2.5 GHz
10 V/m Recommended separation
distance:
d = 1.2 * √P (80 Mhz to 800
MHz)
d = 2.3 * √P (800 MHz to 2.5
GHz)
Note 1: Where (P) is the maximum output rating of the transmitter in watts (W) according to the
transmitter manufacturer and (d) is the recommended separation distance in metres (m).
Note 2: Field strengths from xed RF transmitters, as determined 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 3: At 80 MHz and 800 MHz, higher frequency range applies.
Note 4: These guidelines may not apply in all situations. Electromagnetic propagation is a󰀨ected by
absorption and reection from structures, objects and people.
a
Field strengths from xed 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 xed RF
transmitters, an electromagnetic site survey should be considered. If the measured eld strength in
which the ODFS
®
Pace (XL) is used, exceeds the applicable RF compliance level above, the ODFS
®
Pace (XL) should be observed to verify normal operation. If abnormal performance is observed,
additional measures may be necessary, such as re-orientating or relocating the ODFS
®
Pace (XL).
b
Over the frequency range 150 kHz to 80 MHz, eld strengths should be less than 3 V/m.
6