Conducted RF
IEC 61000-4-6
3 V rms
150 kHz to 80 MHz
3 V rms
150 kHz to 80 MHz
Portable and mobile RF communications equipment
should be used no closer to any part of ICS AirCal,
including cables, than the recommended separation
distance calculated from the equation applicable to
the frequency of the transmitter.
Recommended separation distance:
d = 1.2
d = 1.2
for 80 MHz to 800 MHz
d = 2.3
for 80 MHz to 2.5 GHz,
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 metres (m).
Field strengths from fixed RF transmitters, as determ-
ined 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 this symbol:
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2.5 GHz
3 V/m
80 MHz to 2.5 GHz
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.
a. The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765 MHz to 6.795 MHz; 13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283
MHz; and 40.66 MHz to 40,70 MHz.
b. The compliance levels in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 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 is used in calculating the recommended separation distance for transmitters in these frequency ranges.
c. 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 ICS AirCal is used exceeds the applicable RF com-
pliance level above, the ICS AirCal should be observed to verify normal operation. If abnormal performance is observed, additional measures might be neces-
sary, such as reorienting or relocating ICS AirCal.
d. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Recommended separation distances between portable and mobile RF communications equipment and ICS AirCal
The ICS AirCal is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The customer or the user of the ICS
AirCal can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (trans-
mitters) and the ICS AirCal as recommended below, according to the maximum output power of the communications equipment.
32
Otometrics - ICS AirCal
10 Notes on EMC (Electromagnetic Compatibility)
