Apollo Xpander XPA-CB-14024-APO Manuale di messa in servizio - Pagina 16
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Introduction
Radio waves have very different characteristics to wired links and it is necessary to ensure that every possible
source of attenuation of the radio signal is identified and fully considered in the design of the system.
It is therefore essential that a full site survey is carried out as part of the system design prior to any XPander
devices being installed. This preparatory work will ensure that good signal integrity is achieved.
The reliability of the data transmitted in the final system is determined by the site survey.
Site Survey Instructions
1.
Turn on Surveyor Unit using the switch provided.
2.
Position the Surveyor unit in the proposed location of the XPander Diversity interface.
• The minimum distance of metal objects from the interface is 400mm
• The minimum distance to other electrical equipment e.g. computers, photocopiers, fax machines
and other XPander interfaces is 2 metres (three dimensionally).
3.
Switch on the hand held Surveyor Device.
4.
Position the Surveyor Device where the XPander device is to be fitted. Ensuring that the button on the back of
the Surveyor Device is pressed against the surface where the device is to be fitted.
• The Surveyor Device will now report the strengths, dB readings and background levels.
5.
At this point record all information on the Site Survey Sheet PP2322 and then move to the position of the next
device.
Surveyor Unit
© Apollo Fire Detectors Limited 2015
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Surveyor Device