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Guidance and manufacturer's declaration – electromagnetic immunity
The device is intended for use in the electromagnetic environment specified below. The customer
or the user of the device should assure that it is used in such an environment.
Immunity IEC 60601
test test level
Conducted 3 Vrms
RF 150 kHz to
IEC 61000- 80 MHz
4-6
Radiated RF 3 V/m
IEC 61000- 80 MHz to
4-3 2.5 GHz
Notes:
1. At 80 MHz and 800 MHz, the higher frequency range applies.
2. These guidelines may not apply in all situations. Electromagnetic propagation is affected by
absorption and reflection from structures, objects and people.
*. Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless) tele-
phones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast can not
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 IH25/1 is used exceeds the applicable RF compliance level above, the device
should be observed to verify normal operation. If abnormal performance is observed, additional
measures may be necessary, such as re-orienting or relocating the device.
**. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Compliance
Electromagnetic environment – guidance
level
Portable and mobile RF communications equipment
should be used no closer to any part of the device,
3 Vrms including cables than the recommended separation
distance calculated from the equation applicable to
the frequency of the transmitter. Recommended sep-
aration distance
d = 1.2√P
d = 1.2√P 80 MHz to 800 MHz
d = 2.3√P 80 MHz to 2.5 GHz
3 V/m 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 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: