Yeasn HX-400, User Manual, Page: 29 / 29

25
Guidance and manufacture’s declaration - IMMUNITY to proximity fields from RF
wireless communications equipment
Immunity
test
IEC60601 test level
Compliance
level Test
frequency
Modulation
Maximum
power
Immunity
level
Radiated RF
IEC61000-4
-3
385 MHz
**Pulse
Modulation:
18Hz
1.8W 27V/m 27 V/m
450 MHz
*FM+ 5Hz
deviation: 1kHz
sine
2 W 28V/m 28 V/m
710 MHz
745 MHz
780 MHz **Pulse
Modulation:
217Hz
0.2 W 9V/m 9 V/m
810 MHz
870 MHz
930 MHz **Pulse
Modulation:
18Hz
2 W 28 V/m 28 V/m
1720 MHz
1845 MHz
1970 MHz **Pulse
Modulation:
217Hz
2 W 28 V/m 28 V/m
2450 MHz
**Pulse
Modulation:
217Hz
2 W 28 V/m 28 V/m
5240 MHz
5500 MHz
5785 MHz **Pulse
Modulation:
217Hz
0.2 W 9 V/m 9 V/m
Note* - 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.
Note** - The carrier shall be modulated using a 50 % duty cycle square wave signal.