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

Switching Unit


The switching unit is required for automatic redundancy switching of IF and L-band signals in the frequency range 30 ... 2150 MHz.


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

- solid-state switches DPDT
- attenuators, fix and programmable
- amplifiers
- directional couplers
- control logic
- redundant power supply modules
- LAN interface
- mimic with manual control

All the necessary signal and power supply connections and mains switches are provided at the back.


The unit is controlled via LAN interface. Gain setting and selection of the RF path could be also done manually on the front panel.

Special features

A status string can also be requested at any time via the control interface. The unit is constructed using a modular approach utilising plug-in sub-assemblies which enable ease of installation and maintenance.

Technical datameasured at 25 °C
Configuration:2 : 1 redundancy, consisting of
4 switches DPDT
4 attenuators 3 dB
3 programmable attenuators
3 amplifiers
2 directional couplers - 20 dB
RF specifications:
Impedance:50 Ohm
Frequency range:30 ... 2150 MHz
Gain:20 dB
adjustable 0 ... 20 dB in 1 dB steps
Flatness:+/- 1.5 dB max.
Noise figure:10 dB typ.
VSWR:1.5 : 1 max.
Crosstalk:50 dB min.
Input power:+ 5 dBm max.
1 dBc at output:15 dBm typ.
Switching elements:solid-state switches
Further specifications:
Manual control:
Gain settingup/down push buttons and display
Switch control with mimicpush buttons with LED to show signal flow
RF connectors:
Inputs/directional couplersSMA female
OutputsN female
Power supply (redundant):80 ... 264 VAC, 47 ... 63 Hz
Connectors3-pin, with mains filter and fuses
Mains switches:rear panel
Temperature range:
Operating0 ... 50 °C
EMC:in accordance with European standard EN 61000-6-1 and EN 61000-6-3
Height1 U
Depthabout 380 mm (without connectors and handles)
Front panel:
Front panelpainted (RAL 7021)