P1

P2

P3

P4

FR1

P5

x

P7

P8

FR2

P9

P10

P11

P12

FR3

P13

x

x

x

FR4

P17

P18

P19

P20

FR5

FC1

FC2

FC3

FC4

 

 

 

 

 

 

If packet P6 is lost or corrupted (x), the loss can be corrected by using the FR2 FEC packet. However, corrupt packets P14, P15, and P16 cannot be corrected using the row FEC packet (FR4) because too much data is missing.

To correct these packets, the column FEC data is used. Packets 15 and 16 can be corrected using FC3 and FC4 column FEC packets. Before

correcting packet 14, packet 6 must first be corrected using the row FEC. After this, the column FEC can be used to correct packet 14.

ÖFec Rows and FEC Columns — Extron recommends a setting of 5 for rows and 5 for columns, which should be the starting point for the error correction for the audio transport and provides rugged operation on uncorrected IP networks.

The values that you set in the FEC row and column drop down lists depend on the quality of the network link that is in use. The diagrams above show that the FEC data can add large overhead to the overall bit rate transported over the network. Therefore certain settings, while they may provide a high level of reliability, are inefficient. Alternatively, settings that add little overhead may not provide a sufficient level of protection on networks with a poor quality of service.

ÑError Injection Rate — This setting should be left at 0. It used for test purposes only, to drop packets artificially in order to test the effectiveness of the FEC scheme.

Streams panel

The audio encoder configuration page streams panel (see figure 29) provides details of any active audio encoder streams. The data transport method, TCP or RTP, is defined on the decoder configuration page (see “Configure Encoders or Decoders”). Audio multicasting is selected in this panel (see “Enable multicast streaming“ to select the multicast and “Data Transport Methods“ for definitions of the methods).

Figure 29. Audio Encoder Streams Panel

NOTE: This setting does NOT track the same setting applied in other (video, anc,

colfec, and rowfec) encoder configuration pages. For most applications, you should set the same transport for all stream elements, but this is not mandatory.

The New Export Stream function is not supported.

Configuration Page — Colfec and Rowfec Encoders

The colfec and row encoder configuration pages (see figure 30, on the next page) provide the same basic function, enabling of multicasting. The encoder that you may need to configure depends on whether you have selected column only (colfec encoder) or and Row + column (rowfec encoder) as the FEC mode (see “Forward error correction (FEC) panel“). The streams panel provides details of any active FEC encoder streams. The data transport method, TCP or RTP, is defined on the decoder configuration page (see “Configure Encoders or Decoders”). FEC multicasting is selected on this page (see “Enable multicast streaming“ to select the multicast and “Data Transport Methods“ for definitions of the methods).

VN-Matrix 325 Serial Digital Over IP CODEC • Operation 41

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Extron electronic 325 manual Configuration Page Colfec and Rowfec Encoders, Audio Encoder Streams Panel
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325 specifications

Extron Electronics has established itself as a key player in the AV technology industry, providing innovative solutions for a wide range of applications. Among their product lineup, the Extron Electronics 225 and 325 series of devices stand out for their advanced features, technologies, and characteristics that cater to both commercial and educational environments.

The Extron 225 and 325 series are designed for seamless integration into various AV systems, offering unparalleled performance and reliability. At the core of these devices is their robust signal processing capability. Both models are equipped with high-performance scalers and switchers that ensure optimal video quality. They support a wide range of resolutions, including 4K, enabling users to connect various sources without compromising image fidelity.

One of the key features of the 225 and 325 series is their versatile connectivity options. These devices come with multiple inputs, including HDMI, VGA, and composite, allowing for the integration of various AV sources. The series also includes configurable outputs, which can be customized according to the specific requirements of the installation. This flexibility is vital in multipurpose spaces where different AV setups are needed.

The technologies embedded in the 225 and 325 series also enhance usability and control. They feature Extron’s integrated control systems, which simplify the operation of entire AV systems. Users benefit from the intuitive user interface, enabling easy switching and management of devices. Additionally, compatibility with third-party control systems allows for seamless integration into existing setups, streamlining operations.

Another noteworthy characteristic is the series’ built-in audio processing capabilities. Both the 225 and 325 models support various audio formats, ensuring high-quality sound output. They also include audio embedding and de-embedding functions, facilitating the integration of audio sources with video signals.

Reliability and durability are hallmarks of the Extron brand, and the 225 and 325 series are no exceptions. Designed for long-term use, these devices undergo rigorous testing to ensure they perform consistently under demanding conditions. Their compact form factor also allows for easy installation in constrained spaces, making them ideal for a variety of environments.

In summary, the Extron Electronics 225 and 325 series deliver top-tier performance, expansive connectivity, and exceptional audio-visual processing capabilities. Their innovative features and robust design make them valuable additions to any AV installation, catering to a wide range of user needs in commercial and educational settings. With Extron’s commitment to quality and user-friendly solutions, the 225 and 325 series stand as testament to their leadership in the AV technology realm.
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