Kathrein EXR 1581 Manual De Instalación página 7

System example (symbolic representation)
Sat IF
950-2150 MHz
Note
Particular care should be taken to ensure that each frequency available at the output of the multi-switch is
assigned only once, since otherwise the receivers will generate mutual interference.
The frequencies are allocated on the receiver's Setting menu.
Depending on the type, this assignment may be manual or automatic.
It is recommended to assign the outlets with the shorter length connections to the higher frequencies.
By defi nition the system is designed so that single-cable devices are supplied with 14 V DC.
The power supply is briefl y switched to 18 V DC if control signals similar to DiSEqC™ have to be transmitted.
Continuous application of 18 V would block the system. For this reason, it is recommended to use the outlets
ESU 33/34, which are equipped with an electronic cut-off.
The receivers that are connected must be designed for single-cable operation to EN 50494.
Possible causes of faults, and their remedies
Problem
Multi-switch fails to switch
Multi-switch operates,
but no associated picture
appears
Possible cause
No control signal from
receiver, or incorrect control
signal
Incorrect single-cable
frequency
8 connections per residential unit
Solution
Check that there are no short circuits in the connection from the
receiver to the multi-switch. Check the receiver menu settings
(single-cable mode!).
Operating voltage on receiver output should not be greater
than 14 V
Check menu settings of all connected receivers.
Check that frequencies are assigned to one receiver only