Cisco Systems 8450HDC, 8540HDC, 8550HDC manual Picture Formats, What is Aspect Ratio?

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Picture Formats

What is the Difference Between a Standard-Screen and a Wide-Screen HDTV?

The type of screen your HDTV has (wide-screen or standard-screen) determines how the set-top displays programs on the screen. The picture format for an HDTV is a combination of aspect ratio and screen resolution and is different for standard-screen and wide-screen HDTVs.

What is Aspect Ratio?

An aspect ratio is the ratio of the width to the height of the TV screen. The aspect ratios differ because the television industry manufactures both standard-screen and wide-screen HDTVs to appeal to consumer viewing preferences.

What is the Screen Resolution and Scan Rate?

The screen resolution indicates the amount of detail that the picture displays. Resolution is identified by the number of display lines on the screen. The techniques that an HDTV uses to “paint” the picture on the screen are referred to as progressive and interlaced.

With the progressive method, the lines are drawn on the screen one at a time in sequential order. The interlaced method involves refreshing pixels in alternation — first the odd lines and then the even lines.

For advance setup, select the scan modes that your TV can support. Refer to your set-top and HDTV user guides to choose the proper scan rates (480i, 480p, 720p, 1080i) for your setup.

For example, a resolution of 1080i indicates that the screen shows 1080 lines in an interlaced display, and 480p indicates that the screens shows 480 lines in a progressive display.

Notes:

•The screen resolution (1080i, 480p, and so forth) is sometimes referred to as the scan rate. The terms are interchangeable.

•You can stretch and zoom the displayed picture using the built-in capability of the set-top by pressing the # key on the remote control.

A standard-screen HDTV has a 4x3 aspect ratio. The screen is 4 units wide for every 3 units tall.

4

3

A wide-screen HDTV is one-third wider than a standard-screen HDTV. The screen is 16 units wide for every 9 units tall.

16

9

A screen resolution of 480p or 480i fills the screen.

A screen resolution of 720p or 1080i fills the screen.

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Contents Cisco Explorer 8540HDC DVR 8550HDC DVR Patents Contents Important Safety Instructions Important Safety Instructions Verify the Power Source from the On/Off Power LightWhat’s In The Carton? Additional Equipment You Might NeedWelcome Safety FirstIdentify Your Set-Top Power Turns the DVR on and off SelectIR Sensor GuideBack Panel Connectors Connecting the Set-Top See the Connection DiagramsRequired Connections to an Hdtv use one Connections for an Hdtv and VCROptional Connections to a VCR use one Connections for a Standard-Definition TV and VCR Required Connections to an Sdtv use oneVideo Optional Connection to a VCRAccess Services and Programs View Television ProgrammingStretch and Zoom Program Avoid Screen Burn-InTroubleshooting Automatic Software UpdatesNo Picture No ColorFrequently Asked Questions What is the Screen Resolution and Scan Rate? What is Aspect Ratio?Picture Formats Important Notes Regarding the Hdmi Interface on the Set-Top Connecting to an Hdtv with an Hdmi ConnectorRequired cables Connecting to an Hdtv with a DVI Connector Video Audio Optical MULTI-STREAM Cable Card OUTConnecting to an Hdtv with Component Input YPbPr Optical MULTI-STREAM Cable Card Audio OUTBack of Home Theater Receiver Video OUTConnecting to a Stereo VCR and Hdtv optional ECM MAC 001AC3F4F757 STB RF MAC 001AC3F$F756Cable Input Back of Sdtv Connecting an External Sata Hard Disk Drive optional How the eSATA Drive Works with Your DVRDisconnecting the eSATA Hard Disk Drive Guidelines for Using the eSATA Hard Disk DriveRecommendations for the eSATA Drive Index VCRIndex FCC Compliance Scientific Atlanta, a Cisco Company

8540HDC, 8450HDC, 8550HDC specifications

Cisco Systems has solidified its reputation as a leader in network technologies and solutions, and the Cisco 8550HDC, 8450HDC, and 8540HDC models exemplify its commitment to innovation and performance in data center environments. These high-density computing systems are designed to address the ever-growing demands for bandwidth, application performance, and data processing capabilities.

The Cisco 8550HDC stands out with its impressive capacity and scalability. It supports high-density configurations, making it suitable for large enterprises and service providers requiring robust performance for a multitude of applications. Key features of the 8550HDC include advanced hardware acceleration, which significantly enhances packet processing speeds and lowers latency. With support for a variety of virtualization technologies, it optimizes the deployment of virtual machines, providing flexibility to meet diverse workload requirements.

Next in the lineup, the Cisco 8450HDC is tailored for medium to large-scale operations, combining performance with energy efficiency. Ideal for enterprises looking to maximize resource utilization, it incorporates advanced cooling technologies that help reduce power consumption while maintaining high performance. The 8450HDC also features an architecture supporting multi-service functionality, allowing seamless integration of different network services, such as routing, switching, and security, within a single platform.

The Cisco 8540HDC is designed with versatility in mind, making it a popular choice for a range of deployment scenarios, from enterprise networks to cloud environments. This model excels in offering rich analytics and telemetry features, empowering organizations to gain insights into network performance and user behavior. Its comprehensive management capabilities simplify operations and enhance visibility, enabling faster troubleshooting and optimization of network resources.

All three models feature Cisco’s innovative software-defined networking capabilities, underscoring the shift towards greater automation and agility in network management. Enhanced security features are integral to these systems, offering robust safeguards against evolving threats and vulnerabilities. With support for advanced encryption and security protocols, users can feel confident in the integrity of their data.

Overall, the Cisco 8550HDC, 8450HDC, and 8540HDC represent a powerful trio of solutions that meet the complex needs of modern networking environments. Whether deployed in data centers, enterprise networks, or hybrid setups, these systems deliver the performance, scalability, and security necessary to drive business success in an increasingly digital landscape.
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