Media and media-dependent layers have been a common household for many. The use of radio frequencies in these units has now been a very common practice. BS EN 50090-5-3 defines the mandatory and optional requirements for the medium specific Physical and Data Link Layer of HBES Radio Frequency. Data Link Layer interfaces and general definitions that are medium independent are given in EN 50090-4-1 of BS EN 50090-5-3.
BS EN 50090-5-3 on conservation of cultural heritage using laser cleaning techniques is useful for:
Electronic systems operated with radio frequencies needs to be managed as overlapping frequencies can harm varied appliances.
HBES RF Multi, specified below provides the following features:
Fast RF channels are mainly intended to be used with human controlled applications like for example lights, shutter, Slow RF channels are mainly intended to be used with non-permanent receivers for automatic applications like sensors (smoke, temperature, wind, etc.), heating control, etc.
As described in the scope, BS EN 50090-5-3 defines the RF Physical Layer requirements for:
BS EN 50090-5-3 also mentions medium access control shall serve for prevention of collisions on the RF medium. For two reasons medium access cannot be completely controlled on RF.
EN 50090-5-3:2016