Operated as service or ensemble multiplexer, the system generates a DAB multiplex from all available audio signals and data services. Moreover, it enables multi-stream real-time audio encoding and handling of all standardized and proprietary DAB data applications. The IZT DAB ContentServer is based on highly available standard server hardware and on the proven software system from the renowned Fraunhofer IIS.
Benefits for Broadcasters and Network Providers
The IZT DAB ContentServer makes all options of the DAB standards family available. Different editions offer an optimal selection of features and can be extended easily to flexibly adapt to changing requirements. The compact DAB all-in-one-solution offers all necessary interfaces for smooth integration into the broadcast chain. The use of standard hardware and integrated audio coding bring the benefits of lower hardware costs, cost-efficient maintenance and a significantly lower risk of failure.
Receiver Testing with the DAB ContentServer
The Developer Edition of the IZT DAB ContentServer facilitates the development of DAB receivers. In combination with the IZT S1000 Signal Generator, a versatile laboratory setup can be achieved.
Recording and Analysis
The DAB Recorder handles recording, analysis and archiving of a DAB multiplex in the DAB Archive and is usually located at the operator’s DAB head-end. It records the EDI or ETI stream that is delivered to the transmitter network into its internal storage and makes the recordings available for remote requests from the Library Server.
The DAB Recorder decodes the DAB multiplex in real-time and analyses the multiplex and its components. Index information about the DAB ensemble is transferred to the Library Server.
Monitoring
The DAB Archive monitors the input signals for several parameters including the ensemble configuration and subchannel structure. It is possible to check the labels, data types, bitrates and signaling. The audio programs are checked with regard to noise/silence.
The Library Server permanently monitors the library structure. Further, it logs and indexes the drop-outs and warnings detected by the DAB Recorder. Users can be alerted about failures via SNMP (optional), E-Mail or SMS.
User interface
The web interface of the Library Server provides access to all monitoring data and the archived EDI/ETI streams. The user can request downloading the archived content of a specific time and duration. It is possible to export the complete stream, specific subchannels or the audio content of a subchannel. The GUI also provides a filter to search for specific events such as ensemble reconfigurations.
Add-ons
The following extensions are available optionally:
- Download Manager (Windows software)
- IZT DAB MultimediaPlayer
- ETI Analyze
The IZT S1000 Digital multi-channel Signal Generator is the perfect source of today’s RF waveforms with increasing complexity and bandwidth.They comprise in one unit the simultaneous replaying of 31 RF signal channels and make it possible to replace extensive setups while reducing time and cost. It enables the user to consolidate multiple conventional RF generators into one compact, cost effective, flexible, and easy-to-use RF test source.
Modern radio receivers no longer gather information from a single modulated carrier, but often from multiple sources simultaneously. The multiple signals can be from more than one antenna, with independent carriers and different modulation formats. The IZT S1000 with its revolutionary architecture and IZT’s patented signal processing algorithm combines multiple technologies to match the receiver’s test requirements without a costly batch of standard RF generators.
Based on the IZT S1000 there is a model variation comprising its full functionality with extended additional memory for the most demanding application – the IZT S1010 Signal Generator.
In the IZT RecPlay recording and playback system, the IZT S1000 is used as a signal generator.
Key components of the IZT R5020 are a multichannel digitizer from IZT’s R5000 receiver series and a very high-performance, analog channelizer with overlapping bandpass filters.
IZT’s patented design outperforms conventional receivers by using a passive, low-loss channelizing filter with 12 overlapping frequency bands in front of any active electronics. Each output channel has a dedicated AD converter preceded by an electronic attenuator and subsequent low noise high linearity amplifier. Automatic gain control is performed independently for each channel. The receiver is still sensitive enough to be operated without a preamplifier.
The IZT R5020 design overcomes typical limitations of legacy receivers: Especially when large receive antenna systems are used, the input power into the receiver can be very high. In consequence, limiting the receiver bandwidth by preselection filters becomes essential. The biggest concern are second order intermodulation products which require preselection filters with less than one octave relative bandwidth.
The IZT R5509 is the ideal solution for ATC direction finding to improve situational awareness and reduce the risk of misunderstandings in radio transmissions.
The IZT R5509 DF technology avoids misreading of the aircraft’s call-sign. This improves the situational awareness of the ATC operators and increases the safety level. That in turn, allows to handle more flights per operator for costefficient control of the airspace.
The novel DF system IZT R5509 features 10 coherent receive channels and is equipped with a 9-element antenna array to realize accurate and robust direction estimation. The utilized DF antenna with 9 elements provides superior immunity to multipath propagation. An optional center antenna element may be used for even increased spatial resolution. Beyond outstanding radio frequency (RF) characteristics, the antenna is equipped with lightning protection and is verified to withstand wind speeds of 200 km/h even under icing conditions.
The available features of the IZT C3040 channel simulator were grouped into uplink, payload and downlink effects. Some features are available twice to reproduce a realistic transmission chain.
Key features:
Effects of the uplink include:
- Delay and delay change over time
- Doppler simulation
- Effects of the ionosphere
- Interference by other signals
Within the payload of the satellite the following effects are introduced:
- IMUX filtering
- Nonlinearity (AM/AM and AM/PM) caused by the amplifier
- Phase noise
- OMUX filtering
On the downlink, from the satellite to the terminal the signal then changes by:
- Effects of the ionosphere
- Large and small scale fading
- Interference by other signals
- Thermal noise
Complex operating scenarios for testing transceivers, terminals and satellites can be simulated. Effects due to modifications to the transmission method, the satellite or the terminal equipment can be simulated before implementation with the IZT satellite channel simulator.
During the lifetime of the satellites, the satellite channel simulator can be used to simulate and analyze effects and problems. IZT satellite channel simulators provide excellent signal quality and a comprehensive simulation of effects on a satellite channel.
The IZT C5040’s optimized and scalable signal processing units offer real-time simulation of influences on the signal at the satellite (non linearity, IMUX / OMUX filter, phase noise, interference, antenna gain, Doppler shift) as well as on the transmission link (interference, rain fading, scintillation, reflections, thermal noise). The state-of-the-art Graphical User Interface (GUI) allows changing all parameters of the setup easily. Remote control is possible through SCPI and SNMP.
With the IZT C5040 satellite based communication systems can be extensively simulated and tested prior to their realization. In addition, complex operational scenarios for equipment (receivers, transmitters, satellite phones) and satellite testing can be set up in a very cost-effective way. The IZT C5040 is a scalable system based on individual hardware units that can be configured from uni-directional links to bi-directional links with hundreds of terminals.
Only a single hybrid cable delivers power to the mobile sensor and transmits the data to the shelter for post-processing. This makes the installation simple, no losses in the antenna cables affect system performance and signal integrity is maintained over long distances. In the result optimum dynamic range, sensitivity and direction finding (DF) accuracy with any given antenna array are obtained.
The mobile sensor IZT R5506 contains up to six high-performance receivers up to 6 GHz. The preselector bands are matched to the frequency range of antenna elements to maximize overall system performance. One of the six channels can be factory configured with a separate local oscillator (LO) to work as an independent monitoring channel. The IZT R5506 features a high stability internal reference clock and an integrated Global Positioning System (GPS) module. All the sensor’s functions are remote controlled via the optical interface.
The sensor is provided with a DF processor as an option. Further documentation is available on request. The modular design of the IZT R5506 offers the possibility of customer-specific mechanical modifications.
The IZT S1000 GNSS Realtime Simulator multi-channel, multi-standard functionality enables the generation, encoding and modulation of RF signals for important global digital standards and simulates real-time impairments. It can be used to meet a wide range of challenging test requirements as well as to perform integrated automated
sequences to reduce time to market.It is complemented by a software-based Satellite Constellation Simulator, which simulates the satellite orbits by using a sophisticated orbit integrator including modeling of environmental parameters such as satellite clocks, transmit power, antenna patterns, ionosphere and troposphere. In addition, multiple types of signal interference, like jamming and spoofing, can be defined. To detect such disturbances for GNSS systems, the proven GIDAS system of our partner OHB Austria GmbH can be used.
Optional software modules can be used for the sophisticated simulation of interference signals on top of the GNSS signals including realistic simulation of channel power variations. The real-time RF signal generation is enabled by an FPGA implementation and a real-time interface between the IZT S1000 GNSS Realtime Simulator software and firmware. An additional real-time input interface is available in the software to offer HIL (Hardware-in-the-loop) scenarios.
For the most demanding applications, data can be streamed from an external Memory Extension directly into the FPGA via dual Gbit LAN. The 10 Gbit optical LAN interface is reserved for the GNSS. All kinds of signals for radio testing and any I/Q signals of variable sample rate as well as multiple signals, can be streamed at the same time to the signal source. Dedicated Ethernet connections via the dual Gbit Ethernet port make it possible to stream up to 225 MB/s.
It is easily possible to synchronize multiple IZT S1000 GNSS units in a phase coherent way. One of the IZT S1000 GNSS will take the role of the Master and the other IZT S1000 GNSS will be a Slave unit. This enables the possibility to generate multistandard constellations at the same time.
The IZT S1000 GNSS Realtime Simulator addresses a wide range of different customer applications. The customer benefits from its compact 2U form factor chassis. The chassis contains all digital processing hardware, synthesizers and RF sections. As a versatile and comprehensive testing platform it is offered with a broad choice of available hardware options. For a specific customer application, a single device or extensive setup can be equipped with the exact hardware as required.
The IZT T1000 Broadcast Modulator is based on a fully reconfigurable universal hardware platform. The modulation is software-defined, allowing the platform to be upgraded to other broadcast standards. All input, modulation and RF parameters can be controlled via LAN using either the web interface or SCPI commands.
The IZT T1000 covers the VHF and UHF band supporting the standards DAB and DVB-T. It comes with an intuitive web interface which can be used with any – browser. In addition, the device can be controlled and monitored via SNMP or SCPI.
Factory testing
The automated playback of ETI and EDI files can be used to supply factories with test signals. Even after a power fail it automatically starts the signal generation once the power is stable again.
Laboratory use
For DAB, the IZT T1000 complements the DAB ContentServer Developer Edition, modulating the real-time EDI/ETI output of the multiplexer. Furthermore, the IZT T1000 can modulate a defined set of test signals to verify receivers, for example to confirm compliance to DVB-T country specifications. The optional TSoIP Streaming Application passes the test signals to the IZT T1000.
Broadcasting
Used as an exiter, the IZT T1000 can feed existing power amplifiers. It comes with high-performance digital adaptive pre-correction for maximum transmitter performance. In case of DAB, the modulator can be combined with the IZT DAB ContentServer to form a comprehensive broadcast solution, for example for local “small-scale” DAB.
The IZT R5060 stands out with its good RF performance at a moderate power consumption and real-time bandwidth. The compact design and moderate price do not prevent it from working as a stand alone device even without an additional server.
It’s low power consumption while maintaining excellent quality of reception makes it a practical and unique monitoring receiver. Combined with a Sensor Controller and the IZT Signal Suite GUI connected via 10 Gigabit Ethernet the IZT R5060 extends the range of inter-compatible IZT receivers.
High Reception Quality
The IZT R5060 uses a power-reduced variant of IZT’s latest generation of tuners. The frequency range is from 9 kHz to 6 GHz. The lower end of the frequency range is digitized directly, while higher frequencies are passed through sub-octave preselectors and a dual frequency conversion tuner with a variable 1st IF for maximum robustness against false reception. A low-noise preamplifier can be activated for maximum sensitivity.
The instantaneous bandwidth of this Monitoring Receiver is 60 MHz. Built-in test equipment allows for end-to-end verification. The receiver can be operated in manual or automatic gain control mode.
High Frequency Stability
The IZT R5060 is available with different frequency stability options:
- TCXO (default)
- OCXO
All internal clocks are derived from a single reference oscillator, the built-in high-stability oscillator, which itself can be sychronized to an external source, the built-in GNSS receiver module or slaved to another IZT R5060 receiver via PTP. Once the LAN connection is removed, their internal reference oscillators will maintain highest frequency accuracy to ensure minimum drift of the time bases between multiple receivers.
The IZT R5071 is a portable and ruggedized wideband receiver with frequency range from 9 kHz up to 6 GHz and an instantaneous bandwidth of 60 MHz.
Equipped with a highly selective RF preselector, the IZT R5071 can also handle difficult RF environments. The receiver has a widerange DC power supply input which can be connected to an external battery. The optional built-in storage media with 4TBytes capacity can be used for multiple narrow band IQ signals or spectrum information. The IZT R5071 can execute complex automatic scan jobs and perform recordings triggered by user defined alarm criteria. An network of multiple IZT R5071 receivers can be time synchronized to GNSS satellite signals to support synchronous recording or TDOA applications.
It is designed for applications requiring wide bandwidths and moderate power consumption:
- Portable spectrum monitoring
- Mobile RF recording and monitoring
- Autonomous long-term spectrum monitoring nodes
- Detection of unauthorized transmissions
When connected to a Sensor Controller with the IZT Signal Suite the IZT R5071 can be a part of a larger system comprising also other models of IZT Receivers, like the IZT R3000 or R5010/R5040 series. The receiver can be controlled via a web interface, the IZT Signal Suite software or a third party application accessing its low-level control interface. A built-in WIFI module is available for wireless acces to the IZT R5071.
Operated as service or ensemble multiplexer, the system generates a DAB multiplex from all available audio signals and data services. Moreover, it enables multi-stream real-time audio encoding and handling of all standardized and proprietary DAB data applications. The IZT DAB ContentServer is based on highly available standard server hardware and on the proven software system from the renowned Fraunhofer IIS.
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The IZT DAB Archive is a comprehensive solution for quality control and long-term archiving of EDI/ETI streams. It consists of two components: The DAB Recorder records, analyses and archives a DAB ensemble while the Library Server provides a central interface between user and overall system.
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IZT S1000 and IZT S1010 (model with extended memory) are multi-channel signal generators for the testing of I/Q data, FM-RDS, DVB-T2, ISDBT, HD radio, CDR, DAB+, DMB, Sirius und XM radio receivers in the car industry, multimedia equipment, COMINT/SIGINT systems or for the RF environment simulation and operator training.
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The IZT R5509 is a highly accurate and reliable radio direction finding (DF) system that is designed for high resolution VHF direction estimation. The DF system is intended to support the work of Air Traffic Control (ATC) operators by localizing and identifying the transmitting aircraft.
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The mobile sensor IZT R5506 samples signals synchronously from all antenna elements in a specific frequency band eliminating the need for additional radio frequency (RF) switches. This feature secures short detection times and simultaneous monitoring of one or more channels with arbitrary center frequencies and bandwidths.
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The IZT S1000 GNSS Realtime Simulator is a compact multi-channel high-performance platform for complex and versatile GNSS testing in one device. The GNSS signal modulation is performed by the IZT S1000 GNSS firmware in real-time with extremely low latency.
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IZT R5060 is latest IZT’s generation monitoring receiver in a compact form factor. It has a precise frequency range from 9 kHz up to 6 GHz and an instantaneous bandwidth of 60 MHz.
The IZT R5060 is a medium performance monitoring wideband receiver:
It is designed for cost-efficient applications that require large bandwidths and low power consumption. For example, it is suitable for the detection of unauthorized transmissions or it can build a compact, high-channel-count receiver system.
The IZT R5071 is a mechanically compact and ruggedized wideband receiver with frequency range from 9 kHz up to 6 GHz and an instantaneous bandwidth of 60 MHz. It features internal storage for recording of spectrum or multiple narrow-band IQ signals.
The IZT R5071 is designed for applications requiring moderate bandwidths, moderate power consumption and compact size. When combined with an external server and the necessary options of the IZT Signal Suite, the IZT R5071 becomes a wideband rf recorder with up to 60 MHz continuous recording bandwidth.
