Zeiss Humphrey II-i series, User Manual

Page: 23 / 580

Guidance and manufacturer’s declaration - electromagnetic immunity
The HFA II
-i
is intended for use in the electromagnetic environment specified below. The customer or user of the
HFA II -i should ensure 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 3 Vrms
150 kHz to 80 MHz
3 V
Portable and mobile RF communications
equipment should be used no closer to
any part of the HFA II
-i , including cables,
than the recommended separation
distance calculated from the equation
applicable to the frequency of the
transmitter.
Recommended separation distance
d 1.17 P =
d 1.17 P =
80 MHz to 800 MHz
d 2.33 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,
a
should be less than the
compliance level in each frequency
range.
b
Interference may occur in the
vicinity of equipment marked with the
following symbol:
Radiated RF
IEC 61000-4-3
3 V/m
80 MHz to 2,5 GHz
3 V/m
Note 1: At 80 MHz and 800 MHz, the higher frequency 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 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 HFA II
-i is used exceeds the applicable RF
compliance level above, the HFA II -i should be observed to verify normal operation. If abnormal performance is
observed, additional measures may be necessary, such as reorienting or relocating the HFA II -i .
b
Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
Introduction & Instrument Setup 1-15