User's Manual

24
Table 4
Recommended separation distances between
portable and mobile RF communications equipment and the Pulmonary Function Tester（A9）
The Pulmonary Function Tester（A9）is intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customer or the user of the Pulmonary Function Tester
（A9）can help prevent electromagnetic interference by maintaining a minimum distance between
portable and mobile RF communications equipment (transmitters) and the Pulmonary Function Tester
（A9）as recommended below, according to the maximum output power of the communications
equipment
Separation distance according to frequency of transmitter
m
Rated maximum
output of
transmitter
W
150 kHz to 80 MHz
outside ISM and
amateur radio bands
P
V
d ]
5.3
[
1

150 kHz to 80 MHz
in ISM and amateur
radio bands
P
V
d
]
12
[
2

80 MHz to 800
MHz
P
E
d ]
5.3
[
1

800 MHz to 2.7
GHz
P
E
d ]
7
[
1

0.01
0.12
0.20
0.035
0.07
0.1
0.38
0.63
0.11
0.22
1
1.2
2.00
0.35
0.70
10
3.8
6.32
1.10
2.21
100
12
20.00
35
70
For transmitters rated at a maximum output power not listed above the recommended separation
distance d in metres (m) can be estimated 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 These guidelines may not apply in all situations. Electromagnetic propagation
is affected by absorption and reflection from structures, objects and people.
14. Contact information
Manufacturer: Guangzhou Homesun Medical Technology Co., Ltd
Address: Floor 7th, TianxiangBusiness Building, No.28, Li Fu Road, Haizhu District, Guangzhou,
GD .China
Tel.: [phone]
Email: [e-mail]
URL: https://www.huxijia.cn/index_english.html