Aspect BIS VISTA Spécifications télécharger pdf (Page 81)

SECTION 9 SPECIFICATIONS AND WARRANTY

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9-9

NOTE 1: At 80 MHz and 800 MHz, 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.

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 BIS VISTA system is

used exceeds the applicable RF compliance level above, the BIS VISTA system should be

observed to verify normal operation. If abnormal performance is observed, additional

measures may by be necessary, such as reorienting or relocating the BIS VISTA system

Over the frequency ranges 150kHz to 80 MHz field strength should be less than 3 V/m.

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Aspect BIS VISTA Spécifications Page 81