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
considered. If the measured field strength in the location in which the THixyz series is used
exceeds the applicable RF compliance level above, the THixyz series should be observed
to verify normal operation. If abnormal performance is observed, additional measures may
be necessary, such as reorienting or relocating the THixyz series.
b. Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.
Immunity test
Electrostatic
6 kV contact
discharge (ESD)
8 kV air
IEC 61000-4-2
Electrical fast
2 kV for power supply lines
transient/burst
1 kV for input/output lines
IEC 61000-4-4
IEC 60601 test level
Compliance
Electromagnetic environ-
level
6 kV contact
Floors should be wood,
8 kV air
concrete or ceramic tile. If
floors are covered with
synthetic material, the relative
humidity should be at least 30
%.
Not
Mains power quality should
applicable
be that of a typical
commercial or hospital
environment.
- 53 -
ment – guidance