Invacare Soft Tilt, User Manual

Page: 25 / 141

25 IVCNORBE221119
Test Frequency
(MHz)
Band
a)
(MHz) Service
a)
Modulation
b)
Maximum
power (W)
Distance (m) Immunity test level
(V/m)
1720
1845
1970
1700 - 1990
GSM 1800;
CDMA 1900;
GSM 1900;
DECT; LTE Band
1, 3, 4, 25;
UMTS
Pulse
modulation
b)
217 Hz
2 0.3 28
2450 2400 - 2570
Bluetooth,
WLAN, 802.11
b/g/n, RFID
2450, LTE
Band 7
Pulse
modulation
b)
217 Hz
2 0.3 28
5240
5500
5785
5100 - 5800 WLAN 802.11
a/n
Pulse
modulation
b)
217 Hz
0.2 0.3 9
If necessary to achieve the immunity test level, the distance between the transmitting antenna and the Medical
Electrical Equipment or System may be reduced to 1 m. The 1 m test distance is permitted by IEC 61000-4-3.
a) For some services, only the uplink frequencies are included.
b) The carrier shall be modulated using a 50 % duty cycle square wave signal.
c) As an alternative to FM modulation, 50 % pulse modulation at 18 Hz may be used because while it does not represent actual modulation, it
would be worst case.
28
Electromagnetic compatibility (EMC)