Your contact partner for this product is: Michael Hirschmueller ǀ +49 9078 9695-95 ǀ

Switching unit


The digital video redundancy switch is used in satellite ground stations and TV stations. Depending on different alarm signals a switchover of the signals is proceeded. Furthermore a manual changeover with lock is provided.


The switching unit is housed in a 19“ subrack with only 1 U and very good RF shielding and consists
of the following sub-assemblies:

-    3 coaxial relays SPDT, 75 Ohm
-    2 symmetric audio switches SPDT
-    power supply unit

All the necessary signal, power supply and earthing connections are provided at the rear.
The mains switch and the pushbuttons for manual control are located on the front panel.


The unit is controlled manually via pushbuttons or via the alarm contacts of the connceted receivers.

Special features

The unit is build up into a flat 1 U 19” subrack and is therefore very compact.

Technical datameasured at 25 °C
Configuration:3 SPDT coaxial relays
2 SPDT symmetric
Switching specifications
Coaxial relays
Impedance:75 Ohm
Frequency range:DC … 1 GHz
Insertion loss:0.5 dB typ.
VSWR:1.3 : 1 max.
Isolation:80 dB min.
Input power:10 Watt CW max. (at 1 GHz)
Switching time:20 ms max.
Switching cycles:1 million min.
Audio switch
Frequency range:DC … 100 kHz
Insertion loss:0.2 dB typ.
Isolation:80 dB min.
Further specifications
Control:manually and via external contacts
Signal connectors:
Data signalBNC female, 75 Ohm
Audio signalXLR female, 5pin
Power supply:195 … 264 VAC, 47 … 63 Hz
Connector3-pin, with mains filter and fuses
Mains switch:with integrated lamp
Temperature range:
Operating0 … 50 °C
EMC:in accordance with European standard EN 55022 and EN 50082-1/2
Height1 RU
Depthabout 460 mm (without connectors)
Front panel:painted light grey (RAL 7032)