Seite 38
Technical specifications
Guidance and manufacturer’s declaration – electromagnetic immunity
The TELESMART holter recorder is intended for use in the electromagnetic environment specified below.
The customer or the user of the TELESMART holter recorder should assure that it is used in such an
environment.
Immunity
test
IEC
60601
test level
Compliance
level
Electromagnetic environment – guidance
Radiated RF
IEC
61000-4-3
3 V/m
80 MHz
to
2,5 GHz
3 V/m
Portable and mobile RF communications equipment
should be used no closer to any part of the
TELESMART holter recorder, including cables, than the
recommended separation distance calculated from the
equation applicable to the frequency of the
transmitter.
d= 1,17 * sqrt(P) for 80 MHz to 800 MHz
d= 2,33 * sqrt(P) for 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 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.
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.
1
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 TELESMART holter
recorder is used exceeds the applicable RF compliance level above, the TELESMART holter recorder should be
observed to verify normal operation. If abnormal performance is observed, additional measures may be
necessary, such as re-orienting or relocating the TELESMART holter recorder.
TELESMART-H/P - Holter-ECG-Recording System - version D