GUIDANCE AND MANUFACTURER’S DECLARATION –
ELECTROMAGNETIC IMMUNITY
The Symmetry IQ 4000 Series is intended for use in the electromagnetic environment specified below. The customer
or the user of the Symmetry IQ 4000 Series should assure that it is used in such an environment.
Immunity Test
IEC60601
test level
Compliance
level
Electromagnetic environment - guidance
Conducted RF
IEC61000-4-6
Radiated RF
IEC61000-4-3
3Vrms
150 kHz to
80MHz
3V/m
80MHz to 2.5
GHz
3 Vrms
3 V/m
Portable and mobile RF communications equipment should be
used no closer to any part of the Symmetry IQ 4000 Series,
including cables, than the recommended separation distance
calculated from the equation applicable to the frequency of the
transmitter. Recommended separation distance:
d = 1.2 √
—
P
d = 1.2 √
—
P 80MHz to 800MHz
d = 2.3 √
—
P 800MHz to 2.5GHz
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 determined by an
electromagnetic site survey, should be less than the compliance
level in each frequency range. Interference may occur in the
vicinity of equipment marked with the following symbol:
NOTE 1: At 80MHz and 800MHz, 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 and objects.
a. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) telephones and land
mobiles 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 SYMMETRY IQ 4000 SERIES is used
exceeds the applicable RF compliance level above, the SYMMETRY IQ 4000 SERIES should be observed to verify
normal operation. If abnormal performance is observed, additional measures may be necessary, such as reorienting or
relocating the SYMMETRY IQ 4000 SERIES.
b. Over the frequency range 150kHz to 80MHz, field strengths should be less than 3 V/m.
