Serial Digital Interface (SDI) has, until recently, been the preferred transport mechanism for broadcast transmission. Its main advantage is that it provides a consistent and predictable delivery of data which is ideal for audio/video transport. However, networks in the broadcast industry are now in a state of flux. Increasingly there is a shift away from single-purpose legacy systems like SDI, and a shift towards multi-purpose IP-based networks.
While these are valid reasons for the move to IP, it’s not without challenges. Foremost among these is that IP networks bring an unpredictability and inconsistency of performance. In real terms this means elements such as latency, jitter and packet loss now impact on data transmission in ways that were not experienced in the SDI world. Video is particularly sensitive to such conditions and risks Quality of Service (QoS) unless appropriate steps are taken.
Confidence in deliverability
Products must be tested under the real-world network conditions in which they will be performing. The Calnex SNE is an IP Network Emulator that enables vendors and broadcasters to ensure that the SMPTE ST 2110 standards can be met when their technology is utilized across varying real-life scenarios.
In addition, the IEEE-1588 Precision Timing Protocol is the time and synchronization methodology that needs to be deployed over these IP networks. Again, the Calnex Paragon-ONE is the industry standard to prove PTP performance with support for SMPTE ST-2059-2, AES67, and AES67+SMPTE ST-2059-2.
Calnex Insight
Learn more about the vital role test equipment can play with this one page handout: 'Testing Broadcast Applications with Impairments'. Provide company email address to get immediate access.
Related articles:
Keeping audiences in the moment
Broadcast synchronization
Broadcasting webinar
Related products:
Calnex SNE, Paragon-ONE
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Serial Digital Interface (SDI) has, until recently, been the preferred transport mechanism for broadcast transmission. Its main advantage is that it provides a consistent and predictable delivery of data which is ideal for audio/video transport. However, networks in the broadcast industry are now in a state of flux. Increasingly there is a shift away from single-purpose legacy systems like SDI, and a shift towards multi-purpose IP-based networks. While these are valid reasons for the move to IP, it’s not without challenges. Foremost among these is that IP networks bring an unpredictability and inconsistency of performance. In real terms this means elements such as latency, jitter and packet loss now impact on data transmission in ways that were not experienced in the SDI world. Video is particularly sensitive to such conditions and risks Quality of Service (QoS) unless appropriate steps are taken. Confidence in deliverability Products must be tested under the real-world network conditions in which they will be performing. The Calnex SNE is an IP Network Emulator that enables vendors and broadcasters to ensure that the SMPTE ST 2110 standards can be met when their technology is utilized across varying real-life scenarios. In addition, the IEEE-1588 Precision Timing Protocol is the time and synchronization methodology that needs to be deployed over these IP networks. Again, the Calnex Paragon-ONE is the industry standard to prove PTP performance with support for SMPTE ST-2059-2, AES67, and AES67+SMPTE ST-2059-2. Calnex Insight Learn more about the vital role test equipment can play with this one page handout: 'Testing Broadcast Applications with Impairments'. Provide company email address to get immediate access. Related articles: Related products: |
