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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, and electromagnetic site survey
should be considered. If the measured field strength in the location in which the Patient Monitor is used exceeds the
applicable RF compliance level above, The Patient Monitor should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as re-orienting or relocating the Patient
Monitor.
b: Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3V/m.
Table 4
Frequency Range and Level: RF wireless communication equipment
TT
est Frequency (MHz)
Modulation
Minimum immunity
Level (V/m)
immunity Level
Applied (V/m)
385
**Pulse Modulation: 18 Hz
27
27
450
*FM + 5 Hz deviation: 1 kHz sine
**Pulse Modulation: 18 Hz
28
28
710
745
780
**Pulse Modulation: 217 Hz
9
9
810
870
930
**Pulse Modulation: 18 Hz
28
28
1720
1845
1970
**Pulse Modulation: 217 Hz
28
28
2450
**Pulse Modulation: 217 Hz
28
28
5240
5500
5785
**Pulse Modulation: 217 Hz
9
9
