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

Switching unit


This unit is used for the computer controlled switching of RF signals in the frequency range DC … 12.4 GHz, this system is used in EMC laboratories.


The switching unit is housed in a 3 U 19“ subrack with very good RF shielding and consists of the following sub-assemblies:

-    relays SP3T, SP4T
-    control logic
-    IEEE488 interface
-    manual control

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


The unit is controlled via an IEEE488 interface.

Special features

The I/O boards are monitored in a processor routine.
A status string can also be requested at any time via the control interface.
The unit is constructed using a modular approach utilising 19” plug-in sub-assemblies which enable ease of installation and maintenance.

Technical datameasured at 25 °C
Configuration:2 switches SP3T
1 switch SP4T
Switching specifications
Impedance:50 Ohm
Frequency range:DC … 12.4 GHz
Insertion loss:0.6 dB max.
VSWR:1.6 : 1 max.
Isolation:60 dB min., 90 dB typ.
Input power:200 Watt at GHz
Switching time:20 ms max.
Switching cycles:1 million min.
Further specifications
Control:IEEE488 or tbd.
Manual control:LCD (4x20) and pushbuttons (3x6)
RF connectors:N female, 50 Ohm
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
Height3 RU
Depthabout 340 mm (without connectors)
Front panel:painted light grey (RAL 7032)