33
Table 8: Guidance and Manufacturer’s Declaration –
Electromagnetic Immunity (continued)
The Entre system is intended for use in the electromagnetic environment specified
below . The customer or the user of the Entre should assure that it is used in such an
environment .
Immunity
Test
IEC 60601
Test Level
Compliance
Level
Electromagnetic
Environment – Guidance
Conducted
RF IEC
61000-4-6
Radiated
RF IEC
61000-4-3
3 Vrms
150 kHz to
80 MHz
3 V/m
80 MHz to
2,5 GHz
[V1] 3 Vrms
[E1] 3 V/m
Portable and mobile RF communications
equipment should be used no closer to any
part of the PD08-U system, including cables,
than the recommended separation distance
calculated from the equation applicable to
the frequency of the transmitter .
Recommended separation distance:
d = [ 3,5/V1] √P
d = [ 3,5/E1 ] √P 80 MHz to 800 MHz
d = [ 7/E1] √P 800 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 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:
NOTE 1: At 80 MHz and 800 MHz, 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 .
* 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 the Entre system is used exceeds
the applicable RF compliance level above, the PD08-U system should be observed to verify normal operation . If
abnormal performance is observed additional measures may be necessary, such as re-orienting or relocating the
Entre system .
† Over the frequency range 150 kHz to 80 MHz, field strengths should be less than [V1] V/m .
