8
A05-0473-010
RF DO’S AND DON’TS
Do’s
●
Do
ensure there are sufficient loop addresses to account for all
the RF devices
●
Do
ensure a minimum separation distance of 1m exists
between neighbouring RF devices in all directions
●
Do
perform a Site Survey and create detailed and clear
Link
Quality
and
RF Energy Scan
reports
●
Do
locate a gateway at or greater than 1.8m height from floor
level, best away from busy areas where there is constant
movement of people, such as near stairs. Also away from
areas where metallic obstructions exist, such as near lifts and
escalators
●
Do
ensure that gateways are accessible for maintenance
●
Do
ensure where possible the RF devices are positioned in
a
line-of-sight
. A simple way to check is just to look from a
device and see if the other devices are in view.
Figure 8: Example of Using the Line-of-Sight Technique
In this arrangement the sounder-strobe could have been located
on the wall opposite to the manual call point at a required height.
By making this change the sounder strobe would have had a clear
line-of-sight to the manual call point as well as to the detector (and
the strobe light would probably be more visible.)
0.5m
0.5m
0.5m
0.5m
Detector
Strobe
Manual Call Point
Steel Wall
