Advantech POC127, User Manual

Page: 8 / 93

POC-127 User Manual viii
Information on potential electromagnetic interference and advice on
how to avoid or minimize such interference (IEC/EN 60601-1-2:2007)
Guidance and manufacturer’s declaration - electromagnetic immunity
The model POC-127 is intended for use in the electromagnetic environment specified below.
The customer or the user of the model POC-127 should assure that it is used in such an
environment.
Immunity test IEC 60601
test level
Compli-
ance 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
3 Vrms
3 V/m
Portable and mobile RF communications equip-
ment should be used no closer to any part of the
model POC-127, including cables, than the rec-
ommended separation distance calculated from
the equation applicable to the frequency of the
transmitter.
Recommended separation distance
d = 1,2
d = 1,2 80 MHz to 800 MHz
d = 2,3 800 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 recom-
mended separation distance in metres (m).
Field strengths from fixed 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 equip-
ment 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.
a
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 consid-
ered. If the measured field strength in the location in which the model POC-127 is used
exceeds the applicable RF compliance level above, the model POC-127 should be observed
to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as reorienting or relocating the model POC-127.
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.