Spectracom provides reliable Time & Frequency solutions to synchronize digital broadcast distribution networks, especially Single Frequency Networks (SFN).
The key feature of new digital broadcast technology is the use of a multi-carrier system Coded Orthogonal Frequency Division Multiplex (COFDM) to overcome adjacent channel interferences and reflections of same signal. This process allows reliable operation of SFN networks since all transmitters use the same frequencies. All transmitters in a SFN need to be synchronized so that their emitted signals are frequency identical and bit identical. SFN operation requires Spectracom equipment to ensure synchronization using a universal time and frequency reference.
Many thousands of Epsilon Clocks™ and Ageless master oscillators ensure the deployment of Digital Broadcast networks all over the world. These solutions allow broadcast operators and equipment manufacturers to meet the challenges of supporting legacy infrastructure along with new services and new technologies. Spectracom solutions are compliant with all existing standards: DVB-T, DVB-H, DVB-SH, FLO, T-DMB, DRM, etc.
Applications
- Digital Video Broadcasting
- Digital Audio Broadcasting
- SFN adapter / MIP inserter
- Digital Broadcast Transmitters
- COFDM Encoder and Modulator
Products for Digital Broadcast
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OEM Boards
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The Epsilon Board Model EBO3 provides a fully integrated GPS synchronization solution in a board ready for integration. An evaluation kit is available to support development efforts.
Features: References: GPS, 1PPS, 10 MHZ, E1; Outputs: 1 PPS, 10 MHz, and NMEA; Management via SNMP through Ethernet.
Benefits: Directly integrate into devices, customization available. |
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Compact GPS Clock
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The Epsilon Clock Model EC1S provides a very accurate and stable time and frequency signals in a compact package (122 x 102 x 44 mm). Ideal for synchronizing digital audio and video emitters.
Features: 1 PPS and 10 MHz outputs, optional outputs available, choice of three OCXO oscillators, RoHS compliant.
Benefits: Compact for easy integration into systems. |
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Rack-mount GPS Clock
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The Epsilon Clock Model EC2S is a high-performance GPS clock with very accurate and stable oscillators (OCXO and Rubidium). The model EC3S GPS clock has a front panel keypad for configuration and management. Both models have a 19" rack mount chassis ideal for broadcast equipment racks.
Features: 1 PPS (up to x4) and 10 MHz (x4) standard outputs, many other options available: 1 MHz, 5 MHz, 2,048 MHz, 2.048 Mbit/s, IRIG-B and more.
Benefits: Accurate holdover mode, most versatile. |
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Redundant GPS Clock
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The Epsilon Clock Model EC22S is a fully redundant GPS clock. Dual hot-swapable GPS clock modules ensures 24/7 operation with easy remote management via SNMP through Ethernet.
Features: 1 PPS (x8) and 10 MHz (x8), choice of 3 OCXO, SNMP management, RoHS compliant
Benefits: Highest reliability, remote management |
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Epsilon Switch & Amplifier System
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SAS Switch & Amplifer Systems offer distribution of time and frequency signals to many devices.
Features: Simultaneous distribution of 1PPS and 10 MHz from (2) GPS clocks.
Benefits: Variety of configurations, adds redundancy/reliability.
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