Philips V200 manual 12-16, Separation Distance According to Frequency of Transmitter

Chapter 12

Technical Specifications

Recommended Separation Distances Between

Portable and Mobile RF Communications Equipment and the Respironics V200 Ventilator

The ventilator is intended for use in an electromagnetic environment in which radiated RF disturbances are controlled. The user of the ventilator can help prevent electromagnetic interference by maintaining a minimum distance between portable and mobile RF communications equipment (transmitters) and the ventilator as recommended below, according to the maximum output power of the communications equipment

	Separation Distance According to Frequency of Transmitter
					(Meters)
Rated	150 kHz to 80	150 kHz to 80 MHz				80 MHz to 800 MHz				800 MHz to 2.5 GHz
Maximum	MHz Outside ISM	in ISM Bands
Output	Bands			12				12				23
Power of		d =			P	d =			P	d =			P
Transmitter				-----				-----				-----
(Watts)				V2				E1				E1
0.01	0.12		0.12				0.12				0.23
0.1	0.38		0.38				0.38				0.74
1	1.20		1.20				1.20				2.30
10	3.80		3.80				3.79				7.40
100	12.00		12.00				12.00				23.00

For transmitters rated at a maximum output power not listed above, the recommended separation distance d in meters (m) can be determined using the equation applicable to the frequency of the transmitter, where P is the maximum output power rating of the transmitter in watts (W) according to the transmitter manufacturer.

NOTE 1 At 80 MHz and 800 MHz, the separation distance for the higher frequency range applies.

NOTE 2 The ISM (industrial, scientific and medical) bands between 150 kHz and 80 MHz are 6.765

MHz to 6.795 MHz;13.553 MHz to 13.567 MHz; 26.957 MHz to 27.283 MHz; and 40.66

MHz to 40.70 MHz.

NOTE 3 An additional factor of 10/3 is used in calculating the recommended separation distance for transmitters in the ISM frequency bands between 150 kHz and 80 MHz and in the frequency range 80 MHz to 2.5 GHz to decrease the likelihood that mobile/portable communications equipment could cause interference if it is inadvertently brought into patient areas.

NOTE 4 These guidelines may not apply in all situations. Electromagnetic propagation is affected by absorption and reflection from structures, objects and people.

Table 12-29: EMC Declaration - Recommended Distances

12-16 Respironics V200 Ventilator Operator’s Manual REF 1057983 A