Mindray DPM 1, Operator'S Manual

Page: 52 / 54

B-4
a
Field strengths from fixed transmitters, such as base stations for radio (cellular/cordless)
telephones and land mobile radios, amateur radio, AM and FM radio broadcast and TV broadcast
cannot be predicted theoretically 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 equipment is used exceeds the applicable RF compliance
level above, the equipment should be observed to verify normal operation. If abnormal
performance is observed, additional measures may be necessary, such as reorienting or relocating
the equipment.
b
Over the frequency ranges 150kHz to 80MHz, field strengths should be less than 3V/m.
Table 4
Recommended separation distances between portable and mobile RF
communication and the equipment
The equipment is intended for use in an electromagnetic environment in which radiated RF
disturbance are controlled. The customer or the user of the equipment can help prevent
electromagnetic interference by maintaining a minimum distance between portable and mobile RF
communication equipment (transmitters) and the equipment as recommended below, according to
the maximum output power of the communication equipment.
Separation Distance According to Frequency of Transmitter M
(Meters)
Rated Maximum
Output power of
Transmitter W (Watts)
150kHz - 80MHz
P 2 . 1 = d
80MHz - 800MHz
P 2 . 1 = d
800MHz - 2.5GHz
P 3 . 2 = d
0.01 0.12 0.12 0.23
0.1 0.37 0.37 0.74
1 1.17 1.17 2.34
10 3.69 3.69 7.38
100 11.67 11.67 23.34
For transmitters at a maximum output power not listed above, the recommended separation
distanced 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
—
At 80 MHz and 800 MHz, 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.