67
a. should be less than the
compliance level in each
frequency range.
b. Interference may occur in the
vicinity of equipment marked
with he following symbol:
Note1: At 80 MHz and 800 MHz, the higher frequency range applies.
Note2: 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 radio, AM and FM radio broadcast, and
TV broadcast cannot be predicted the oretically with accuracy. To assess the
electromagnetic environment due to fixed RF transmitters, an electromagnetic site
survey should be considered. If the measured field strength in the location in which
the thermometer are used exceeds the applicable RF compliance level above, the
thermometer should be observed to verify normal operation. If abnormal performance
is observed, additional measures may be necessary, such as reorienting or relocating
the thermometer.
b
Over the frequency range 150 kHz to 80MHz, field strengths should be less than
3 V/m.
Recommended separation distance between portable and mobile RF
communications equipment and the thermometer
The thermometer are intended for use in an electromagnetic environment in which
radiated RF disturbances are controlled. The customers or the users of these
thermometer can help prevent electromagnetic interference by maintaining a
minimum distance between portable and mobile RF communications equipment
(transmitters) and the thermometer as recommended below, according to the
maximum ouptut power of the communications equipment.
Output Power
of Transmitter
in Watt
Separation distance according to frequency of transmitter
in meter
150 kHz to 80 MHZ
d = 1.2
√
P
80 MHz to 800 MHZ
d = 1.2
√
P
800 MHz to 2.5 GHz
d = 1.2
√
0.01
0.12
0.12
0.23
0.1
0.38
0.38
0.73
1
1.2
1.2
2.3
10
3.8
3.8
7.3
100
12
12
23
For transmitters rated at a maximum output power not listed above, the
recommended separation distance d in meters (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: At 80MHz and 800MHz, the separation distance for the higher frequency
range applies
Note: These guidelines may not apply in all situations. Electromagnetic propagation
is affected by absorption and reflection from structures, objects, and people.
Model: TH1009N / THERMO DISTANCE
Shenzhen Dongdixin Technology Co., LTD.
No.3 Building XiliBaimang Xusheng Industrial
Estate 518108,Nanshan Shenzhen, China.
Shanghai International Holding Corp. GmbH (Europe)
Eiffestraße 80, 20537 Hamburg Germany
Содержание NON-CONTACT INFRARED THERMOMETER
Страница 1: ...MANUEL D UTILISATION INSTRUCTION MANUAL THERMO DISTANCE...
Страница 2: ...THER...
