Hydas AD-2021 - Page 58

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and TV broadcast cannot be predicted theoretically with accuracy. To assess the

electromagnetic environment due to  xed RF transmitters, an electromagnetic site

survey should be considered. If the measured  eld strength in the location in which

the AD-2021 is used exceeds the applicable RF compliance level above, the AD-2021

should be observed to verify normal operation. If abnormal performance is observed,

additional measures may be necessary, such as re-orienting or relocating the AD-

2021.

: Over the frequency range 150 kHz to 80 MHz,  eld strengths should be less than

[V1] V/m.

For ME EQUIPMENT and ME SYSTEMS that are not LIFE-SUPPORTING

Recommended separation distances between

portable and mobile RF communications equipment and the AD-2021

The AD-2021 is intended for use in an electromagnetic environment in which radia-

ted RF disturbances are controlled. The customer or the user of the AD-2021 can help

prevent electromagnetic interference by maintaining a minimum distance between

portable and mobile RF communications equipment (transmitters) and the AD-2021

as recommended below, according to the maximum output power of the communi-

cations equipment.

Rated maximum

output power of

transmitter

Separation distance according to frequency of transmitter

150 kHz to 80 MHz 80 MHz to 800 MHz 800 MHz to 2,5 GHz

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 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 These guidelines may not apply in all situations. Electromagnetic propagation

is a ected by absorption and re ection from structures, objects and people.

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