8 Radio
8.1 General description
8.2 Determining radio quality
8.3 Radio channel / Frequency
8.4 Range
Radio is used as a bus link for data packages between the transmitter (Portable Control Unit) and
receiver (Central Unit), the radio continuously transmits the positions of the analogue and digital
inputs available on the Portable Control Unit to the Central Unit for further processing.
The digitalized data transfer protocol uses a high security level for verification of each data pack-
age, no loss of individual functions due to radio interferences can occur.
The unique ID-code held in the Portable Control Unit ensures that the system can not be operated
unintentionally by other Control Unit.
The transmission allows interferences to some extent as long as multiple data packages are not
interfered successively.
The radio quality can be determined by the external status LED and/or the first 7- segment on the
LED-display during radio communication
When an optimal communication is acquired the external Status LED will be fixed green and the
Central Unit LED-display will indicate “1x” (x being dependent on program setting).
Short interruptions and losses of data packages will be indicated by irregular flashes of these
indicators, an increasing intensity of flashes indicates a decreasing radio
reception.
Note that irregular flashes is a common occurence, unless they cause an interuption in communi-
cation they should not be considered a cause for concern.
Refer to separate document for radio channel used in your region
Refer to separate document for radio channel used in your region
Fixed indications
Fixed green
Flashing green
(Irregular)
Fixed red
Irregular flashes
Standby
NOTE:
In such cases that a locked frequency is used the second 7-segment indication will be different,
check chapter 6.2 for further information.
Document type
Document number
Page
Rev
Service Manual
S071
C
30 of 46
