RF Test and Measurement 

for Car and Home Infotainment Systems


RF-Test of Infotainment Components

Modern infotainment components process a variety of information that is radiated via broadcast antennas. For the operation of infotainment components in test environments, generator- or live signals are required. Furthermore, it is necessary that components are supplied with multiple RF signals at once. Modern infotainment components contains numerous receivers for different broadcasting and satellite signals as well as front-ends for mobile and wireless standards. Each of the receiver has special characteristics which affect the quality of the audio and video signals perceived by the end-user.


An economical approach for the supply of infotainment components with RF signals in production, development or field testing application, is the use of wideband, active RF signal combiners and multicouplers. They combine and distribute RF signals of various broadcast and satellite navigation standards losslessly to almost any number of outputs in a cost-efficient, space-saving way. The RF connection between signal combiner and multicoupler is made via a common coaxial line.

In contrast to broadcast signals, signal paths for mobile radio and wireless networks have to be bidirectionally executed. The supply of RF can be realized either by wideband power splitters or RF switches. The latter offers significant advantages in terms of losses.

Does each receiver offer the required level dynamics? In order to test these characteristics in terms of sensitivity with small RF signals, variable attenuators are required. A reproducible, time-efficient test can be carried out automatically via a remote control interface.

The use of active antennas in infotainment components places demands on voltage stability and current reserves of the phantom power supply components in the devices. In order to examine the reserves and stability, simulation of antenna loads is required. Time-efficient and reproducible tests are automatically controlled.



The ATT-8E slot-in module enables variation of the RF input level of the test device. Thereby, properties of the receiver like sensitivity can be evaluated. In combination with the SR6-11C system platform and the SR6-CU controller unit, extensive, scalable and remote controllable solutions can be realized.



The active signal distribution of the WSDU series distributes RF signals broadband and loss-free in level to several outputs. RF signals made by generators as well as live signals of antennas can be handled. For distribution systems with up to eight outputs multicoupler in 19", 1U form factor are available. For larger distribution systems a multicoupler in modular design offers a space- and cost-efficient solution in combination with the SR6-11C system platform. Due to the cascade of distribution modules, nearly any number of outputs can be created for the reproduction of RF signals. The monitor interface on the front panels of the modules allows maintenance without interruption during operation.



The slot-in module PT-4CS is designed for the test of phantom supply units in infotainment components. By PT-4CS modules, the signal path of the distribution system is supplemented by DC current sinks. One module contains four independent adjustable current sinks. Via an internal voltmeter the value of the phantom voltages can be read out for each channel. LEDs on the front panel signalize the presence of phantom voltages. The control of the PT-4CS slot-in module occurs via LAN or USB, provided by the SR6-CU controller unit.

Category Product Description Frequency Range
Signal Distribution WSDU-2X4R High Dynamic 2 Channel 1 to 4 Multicoupler 100 kHz … 4000 MHz
Signal Distribution WSDU-1X4ER Extremely Wideband 1 to 4 Multicoupler 20 MHz … 8000 MHz
Signal Distribution WSDU-2X4ER Extremely Wideband 2 Channel 1 to 4 Multicoupler 20 MHz … 8000 MHz
Signal Distribution WSDU-1X8ER Extremely Wideband 1 to 8 Signal Multicoupler 20 MHz … 8000 MHz
Demultiplexer FDMX Demultiplexer for Broadcast and Navigation Signals AM/FM, DAB, DVB-T, GNSS
Demultiplexer FDMX-PT Demultiplexer with Phantom Supply Test AM/FM, DAB, DVB-T, GNSS
Demultiplexer FDML Dual Port Adapter for AM/FM Broadcast Signals AM/FM
Current Sink PT-8CLR 8 Channel Programmable DC Load, 19" Device 100 kHz … 8500 MHz
RF Attenuator ATT-8E 8 Channel Digital Step Attenuator, 0 … 31.75 dB 100 kHz … 8500 MHz
Accessories RFT-N RF Terminal with N Female Connector
Accessories CP-N 8 Port 1U N Connector Terminal with Labelling Strips



All broadcasting standards and navigation signals can be transmitted in the frequency multiplex. Furthermore, the transmission of mobile and wireless standards is possible via bidirectional components.


Robust Design

In production and development, high quality and availability of the RF signal is immeasurable. The components comply with these requirements and are designed for longstanding operation.



A plethora of digital and analog modulated signals with different levels can be transmitted in broadband manner and with low distortion.



Active signal distribution prevents signal loss and offer the possibility of transmitting weak signals.



All outputs of the RF multicouplers offer the same signal level which is a basic requirement for good reproducibility.



Compact, space-saving and maintenance-friendly components for use in laboratory and production environments.



Both the functionality of the distribution system and the number of outputs can be easily expanded using additional components.


Remote Control

Adjustable test components can be integrated into automatic test sequences. They can be controlled via LAN and USB.

Latest modification: 29.08.2017