Advanced Controls panel

Click the Advanced button in the Bandwidth Management panel to access this panel. The controls in this area provide the complete set of VNC 325 image quality and bit rate tools (see figure 33). Some of the controls in the Bandwidth Management panel are duplicated here; when controls are duplicated, settings in one panel automatically track to the other panel.

1a1b

1c1d

1e 1f

Figure 33. Advanced Controls Panel

The panel is divided into to two main categories:

•Video Quality (spatial compression) settings

•Bandwidth settings

Video Quality Management

ÄLuminance — This control sets the level of luminance spatial compression, from 0 (minimum compression) to 10 (maximum compression).

ÅChrominance — This normally locked field shows the level of chrominance spatial compression, from 0 (minimum compression) to 11 (maximum compression). When locked, chrominance is directly related to the Luminance control by an offset value of 2.

NOTES: • To manually set the chrominance compression, uncheck the Lock

check box.

• A value of 2 is the optimal offset between luminance and chrominance.

• Settings of 4 (Luminance) and 6 (Chrominance) provide visually lossless compression for HD content.

• By default, the offset between Luminance and Chrominance is set to 2 whenever the Advanced controls panel is hidden (the Bandwidth

Management controls panel Standard button is clicked).

ÛTemporal Compression mode check box — Applies temporal compression to the bandwidth management, causing data to be transferred only when a change occurs between frames. This box is selected by default and should always remain selected.

ÜRefresh Rate — Controls how frequently the non-changing parts of the screen are updated when temporal compression mode is enabled ( the Temporal Compression check box is selected). This is useful when connecting new displays to a multicast source and to fill in gaps in the data when using a lossy network transport such as RTP. A value of 1 refreshes the screen in one second, a value of 0.1 refreshes the screen 10 times per second. A value of 0 disables the refresh.

†Threshold — The threshold setting modifies the detection point of the temporal compression algorithm. A value of 0 results in all changes between frames being sent. As the threshold value is increased, only changes above a certain level are sent, thus reducing the bit rate. As a general rule, always set this to a 1 for a camera originated image.

VN-Matrix 325 Serial Digital Over IP CODEC • Operation 44

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.