Planning
Defining the place of mounting
4
47 | 82
Building Technologies
009865_m_en_--
Fire Safety
2015-11-06
4.4 Defining the place of mounting
General restrictions/system limits
Maximum number of radio detectors per radio gateway
30
Maximum distance between radio gateway and radio detector
40 m or 90 dB
WARNING
Several radio gateways using the same basic channel
Faults or malfunctions will arise.
●
Start up radio gateways one after in the same transmission field.
If you want to start up several radio gateways, they have to be started up one after
another in the same transmission field such that every radio gateway can establish
its own basic channel in configuration operation and logged on radio detectors
each communicate with just one radio gateway.
You can then also fit the radio gateways at a greater distance.
This will also ensure that temporary changes to the transmission fields do not
result in malfunctions as a result of the same basic channels being occupied
several times over.
Measure the distances between the radio gateway and radio detector on the
building plan in advance and calculate the damping.
For reliable planning, you will have to measure the field strength in the building.
More than 16 radio gateways
If a project consists of more than 16 radio gateways (max. utilization), additional
radio gateways (>16) have to be fitted in a remote transmission field without radio
cell overlapping.
The 16 basic channels can then be used again.
4.5 Radio test set DZW1171
For reliable planning, field strength measurements must be taken in the building.
You can take field strength measurements with the radio test set DZW1171.
For details, see document 004446.
See also
2
