Extron electronic QGE 100 manual Troubleshooting Performance, Performance Criteria

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Troubleshooting Performance

In an ideal QGE 100 system, the source displayed on the viewing device should be virtually indistinguishable from the original source. However, under certain circumstances, you may notice some reduction in performance. This section describes the problems you may encounter and provides suggestions for minimizing or avoiding them.

Performance Criteria

The performance criteria include the following:

•Image Refresh Rate — how often the display content is updated. Ideally, this should match or be as close as possible to the refresh rate of the original source.

As the refresh rate decreases, you notice a loss of smooth motion on the screen. For example, a moving mouse cursor may appear to move smoothly at a fast refresh rate but jerkily at slower rates.

The QGE 100 features a variable source refresh and update rate (frame rate). To ensure smooth motion, it use the highest possible refresh rate. However, during periods of intense screen activity, the refresh rate may be temporarily reduced to compensate for the higher volume of data.

•Image Latency — how long a change in the original source takes to be seen in the viewed source. Ideally, this should be instantaneous (in real time).

In practice, there is always be some delay introduced by the electronics and software that process the data between the original source and the viewing station; however, this is usually small enough to be ignored. As the latency increases, a greater time lag becomes noticeable between events happening on the original source and the same events being seen on the viewed source.

•Image Quality — the sharpness and color of the viewed source in comparison to the original. When the source is viewed at the same resolution as the original, there should be no discernible differences.

If any scaling is applied to the source (so that it is displayed smaller or larger than the original) there is always some small loss of sharpness. This is an inherent side effect of image scaling.

Things that Impact Performance Criteria

Data stream bottlenecks

The QGE 100 streams only data relating to changes in the source display. Therefore, a source containing a lot of movement (such as an MPEG movie) creates more data than a source with little or no movement (such as a spreadsheet file). Changes in latency or refresh rate can arise when a bottleneck occurs at some point in the data path which restricts the flow of data. Potential bottlenecks include:

•Data Encoding — Data from the source capture process is encoded into a QGE 100 data stream and sent to the network. Under normal circumstances, the QGE is capable of encoding most sources without any difficulty. However, if you are using a high resolution source containing a lot of movement, the encoder may generate more data than can be transmitted between frame captures.

In this situation the encoder can temporarily reduce the refresh rate, allowing more time for the data to be sent (see “Optimizing the Encoder Parameters” on page 55).

QGE 100 • Reference Information

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Contents QGE Safety Instructions English FCC Class a Notice Notifications Software CommandsConventions Used in this Guide Contents QGE 100 Contents About the QGE 100 Encoder About this GuideSingle or Multiple Users QGE 100 SoftwareQGE 100 Data Stream FeaturesFunctional Overview Image Capture and DistributionOperating System Managing the NetworkQGE 100 connected with no local monitor Edid ManagementQGE 100 connected with a local monitor Digital and Analog Representation Supported Source FormatsMulticast Streaming Application DiagramsInstallation Overview Installation OperationQGE 100 Rear Panel Rear Panel FeaturesPin Function Connecting the Source Computer to the QGEFor an analog source computer Analog Monitor Cable with FerriteConnection Procedure Connecting the QGE 100 to the NetworkEthernet Connection Indicators Connecting Power to the UnitIf mounting the QGE 100 on a rack Connection DiagramsConnections with a Digital Source Digital Source Connection DiagramConnections with an Analog Source Analog Connection DiagramQGE 100 Front Panel Front Panel FeaturesComputer System Requirements Accessing the Software ProgramsStarting the Administrator Program Using the QGE 100 Administrator ProgramInstalling the Software Tasks section QGE 100 Administrator Main Application WindowQGE 100 List section Recent connections Configure QGE 100 Properties sectionMenu bar Option DescriptionTools menu Other QGE 100 window itemsViewing a QGE 100 Source Administrator Viewer windowMenu Option Toolbar Icon Description Administrator Viewer menu OptionsAdding QGEs to the list Managing the QGE 100 ListRefreshing the list Saving the listLoading a saved QGE 100 List Deleting a QGE from the listDeleting the QGE 100 List Changing the Password Logging In and Out Administrator LevelConfiguring network settings Configuring a QGEConfiguring performance settings Setting Description Network Settings WindowNetwork Settings Section for UDP Multicast Configuration Configuring UDP multicast settingsDetect Quantum Sources Window Configuring the QGE for Use with a Quantum Elite ProcessorQGE 100 Software Configuration and Control Starting the Viewer Program Using the QGE 100 Viewer ProgramPort QGE 100 Viewer WindowConnections Menus and toolbarOption Toolbar Icon Description RecentView menu Connecting using the Channel list Connecting to a QGE 100 SourceRefreshing the Channel List Connecting using the Connect dialog boxConnecting to a QGE 100 on another subnet Disconnecting from a QGELearning Dialog Example Learning DialogsEnabling Mouse and Keyboard Control Configuring keyboard and mouse control optionsMouse and Keyboard Control of the Source Computer From the Special Context menu Field To enter a valueTo end the current control session, do any of the following Starting and stopping a mouse and keyboard control sessionUsing the Special Context menu Multicast Error LoggingSync SpecificationsVideo input Video processingIP, TCP, UDP, Dhcp GeneralAccessories Part Number Part Numbers and AccessoriesOptional Accessories Included Parts Replacement Part NumberOther Rack Mounting Requirements Power supplyMounting the QGE 100 Encoder UL Guidelines for Rack MountingClass Name Valid Address Range Identifier Arrangement What is an IP Address?IP Addressing Choosing IP AddressesClass Name Subnet Mask Subnet MaskPinging for the IP Address Ping to determine the Extron IP addressLocal and remote devices Subnetting, a PrimerPinging to determine the web IP address GatewaysUnmasked octets are compared indicated by ? in figure IP addresses and octetsSubnet masks and octets Determining whether devices are on the same subnetData stream bottlenecks Troubleshooting PerformancePerformance Criteria Things that Impact Performance CriteriaSource scaling Optimizing the Encoder Parameters Europe USA, Canada, South America Japan Central AmericaEurope, Africa, and the Middle China East Asia Middle East
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QGE 100 specifications

The Extron QGE 100 is a high-performance network switch engineered specifically for AV system integration. With its advanced capabilities, this device plays a crucial role in managing AV data traffic, ensuring reliable performance and efficiency in various settings such as corporate environments, educational institutions, and healthcare facilities.

One of the key features of the QGE 100 is its support for Power over Ethernet (PoE). This allows the switch to deliver both data and power to connected devices over a single Ethernet cable, simplifying installations and reducing the need for additional power sources. This is particularly beneficial for devices like IP cameras, wireless access points, and AV devices in scenarios where accessibility to power outlets may be limited.

The QGE 100 also provides a robust Layer 2 switching functionality, which is essential for managing data flow within the network. Its capability to handle multiple VLANs ensures that AV traffic can be segregated effectively, thus improving network performance and security. The switch features IGMP Snooping, a protocol that optimizes multicast traffic management, ensuring that video streams reach the intended recipients without unnecessary bandwidth consumption.

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In conclusion, the Extron QGE 100 network switch is an essential tool for any AV system requiring efficient connectivity, power delivery, and data management. Its sophisticated features and technologies make it a valuable asset in modern AV installations, ensuring robust performance and ease of use.
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