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작성일 : 16-12-22 18:08
[기타제품] PRISM
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   PRISM-Media-Analysis-Solution-Datasheet-2MW604461.pdf (421.0K) [7] DATE : 2016-12-22 18:08:25


PRISM provides flexible options and field-installable upgrades to monitor a diverse variety of IP statistics as well as video and audio content. The comprehensive feature set, along with an intuitive and simplified graphical presentation of IP statistics, including video quality and diagnostic information, enables engineers to ensure the delivery of superior Quality of Service (QoS) levels in an increasingly complex broadcast environment involving compressed / uncompressed video transmission through SDI/IP signal paths. PRISM is an ideal solution for monitoring SDI/IP hybrid environments including master control rooms, production studios, OB vans, and signal contribution/distribution centers.

Features and benefits
  • A comprehensive analysis and monitoring tool for a hybrid IP/SDI broadcast systems that provides system evaluation for long term system quality monitoring and reporting
  • Real time IP/SDI analysis and monitoring to quickly identify the issue to determine the root cause
  • Graphical displays that show the traffic present in the 10G Ethernet link, allowing engineers to understand what is on their network and to easily select the stream of interest
  • Select and view the desired content in the stream with picture, waveform and audio bar displays allowing visual confirmation of your content
  • Detect IP packet errors, monitor the packet inter arrival time (PIT) and time stamped delay factor (TS-DF) to allow engineers to observe issues that may cause intermittent loss of Video, Audio or Data
  • Analysis tools coupled with historical data give engineers the ability to understand and resolve complex and intermittent problems quickly
  • Ensure proper PTP metadata setup to let the instruments accurately synchronize in the system
  • Multi-point or remote site monitoring allowing one engineer to quickly respond to issues from multiple points in the system
  • Build an extensive monitoring solution with the SDI signal decoded from the SMPTE 2022-6 stream
  • The Picture application provides a full HD, 9-inch screen that can be used for confidence monitoring
  • All-in-one instrument within 3RU half rack platform that can be used for either portable application or rack mount application

Identify the streams in a 10G Ethernet cable to set up the system properly

Engineers designing and evaluating a hybrid IP/SDI broadcast system face challenges in determining the status of the system they are building. While an SDI coax system typically carries one signal, a 10G Ethernet cable can carry multiple streams and it can be difficult to determine what content is carried on each of the streams within a IP based broadcast system.

PRISM offers the tools to quickly identify the streams in the 10G Ethernet link and the content in each stream. The IP Status application shows the source IP address and port number, destination IP address and port number, VLAN flag and protocol of all sessions available in a 10G Ethernet link.
 

IP Status application showing all sessions in a 10G Ethernet link.

An engineer can view further details using the Video tab in the IP Session application, which shows the RTP header information in the selected ST2022-6 stream including High Bit Rate Media header information with Green / Red LED error status. The status LED on an application tab indicates the aggregated error status for the monitored items under that tab.

An engineer can determine the number of streams available on the link as well as the quality level of each stream. A selected stream can be decoded to the Picture application to let the engineer verify the content in the stream, and can also be output through the AUX SDI output with IP/SDI conversion for the extensive monitoring solution.
 

IP Session application showing the RTP header information including HBRMT in a ST2022-6 stream.

Monitor and verify PTP system setup to ensure genlock of equipment in the facility

In a hybrid IP/SDI broadcast system, a variety of reference signals may be used to synchronize equipment within the facility. Traditionally, black burst (BB) or tri-level sync (TLS) references have been used for this purpose. For IP networks, PTP (IEEE1588) is used for system synchronization.

PTP uses the Best Master Clock Algorithm (BMCA) to choose the grandmaster to which all PTP devices will synchronize, and to choose the mechanism to convey the time stamps generated at the source of event message for Master/Slave unit synchronization and the other mechanisms required for accurate synchronization, higher system robustness and further flexibility in the PTP system integration. However, those mechanisms work as designed only when engineers have set up the system correctly.

In the IP Status application, PRISM displays the PTP sessions available in the 10G Ethernet link to let users quickly check the availability of the master and slave units in a Multicast system. The PTP tab in the IP Session application provides the lock status, including the phase lag to the grandmaster, and interpretation of the PTP metadata within the Management Message. The PTP metadata includes the Master ID, PTP time in UTC and master characteristics (clock quality, priority, etc.) to let the engineer ensure the setting of the PTP system is correct.
 

IP Session application showing the PTP lock status and PTP metadata information

Monitor the quality level to keep the facility on air

The asynchronous nature of an IP system can produce a wide variety of bandwidth usage; in extreme cases this can result in the loss of packets. Therefore it is important to be able to monitor the network traffic and engineers need tools to evaluate packet loss.

PRISM provides a Packet Interval Time (PIT) histogram and trend graph as well as the trend graph of Time Stamped Delay Factor (TS-DF) standardized in EBU-TECH 3337 to help engineers determine how the packet interarrival time from a sender is affected in the system. These measurements can help engineers determine the root cause when packet loss has occurred.
 

PIT Histogram application for monitoring the range of PIT variance.


 

PIT trend graph for monitoring the trend of PIT variance over time.
 

TS-DF trend graph for monitoring the trend of TS-DF variance over time.

Debug a hybrid IP/SDI broadcast system to isolate the root cause

Engineers debugging a hybrid IP/SDI system first need to isolate the root cause of the error to find whether the error is in the IP layer or in the content layer. Details of the error can then be determined by examining the identified layer. PRISM offers error detection feature sets in both the IP and content layers using the Event Log application.

The graphical displays show the error trend correlated to historical data. In these displays, the errors detected in both IP and content layers are time correlated, which allows the engineer to verify the error in the IP or content layer. For example, if an error is detected in the content layer but not in the IP layer, then the error may have happened before the content was wrapped by the IP headers.
 

RTP Sequence Error incident graph for monitoring the errors detected over time.
 

Event Log application for checking the details of error events.

Monitor the quality of content with familiar feature sets

In any broadcasting system, ensuring the quality of Video, Audio and Data is the most important task for broadcast engineers. The Picture, Waveform, Audio and Video Session applications are available for engineers who need the familiar feature sets to instantly check the quality of content.
 

Picture, Waveform, Audio, and Video Session applications provide content conformance monitoring tools.

Operate PRISM remotely to provide immediate facility assistance

Within a hybrid IP/SDI facility, there are a wide variety of tasks an engineer needs to perform to troubleshoot issues. One such task is to quickly provide assistance to an operator to help meet a deadline for production or to keep the facility on-air. The remote control feature in PRISM allows the engineer to remotely access the unit with a Web browser application running on a PC or tablet computer. This allows the engineer to immediately provide assistance by starting to diagnose the problem from their desk, minimizing down time, and helping to isolate the cause of the problem.
 

Remote monitoring using a Web browser.


 
 
 

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