Ensemble Designs BrightEye 2 User Manual
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Ensemble Designs BrightEye 2 User Manual

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Analog to Digital
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N S E M B L E
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S
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This user guide provides detailed information for using the BrightEye™2
Analog to Digital Converter.
The information in this user guide is organized into the following sections:
• Product Overview
• Functional Description
• Applications
• Rear Connections
• Operation
• Front Panel Controls and Indicators
• Using The BrightEye Control Application
• Warranty and Factory Service
• Specifications
• Glossary
Converter

User Guide

S
BrightEye-1
Revision 5 SW v1.0.7

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  • Page 1: User Guide

    Analog to Digital Converter User Guide N S E M B L E Revision 5 SW v1.0.7 This user guide provides detailed information for using the BrightEye™2 Analog to Digital Converter. The information in this user guide is organized into the following sections: •...

  • Page 2: Product Overview

    The output is serialized as a 270 Mb/s bitstream and feeds the electrical SDI BNC output connector. BrightEye 2 is powered by a 12 volt DC universal power supply. This power supply can accept an input voltage between 90 and 230 volts, at 50 or 60 Hz.
  • Page 3 BrightEye 2 Functional Block Diagram APPLICATIONS BrightEye 2 is ideal for situations requiring analog to SDI video conversion. In the example shown below, the output of a component analog VTR is fed to the input of a digital production switcher.

  • Page 4: Rear Connectors

    BrightEye 2 Analog to Digital Converter REAR CONNECTORS All connections to the BrightEye 2 converter are made on the rear of the unit. Refer to the illustration below. BrightEye 2 Rear Connectors Power Connection Connect a modular power supply to the 12 volt DC power input connection on the far left.

  • Page 5: Operation

    OPERATION Control and operation of the BrightEye 2 converter is performed from the front panel or with the BrightEye Control application. Some control settings are only available with BrightEye PC or Mac. These parameters NOTE: cannot be monitored or controlled with the front panel.
  • Page 6 BrightEye 2 Analog to Digital Converter The LED of an edited parameter will blink for 15 seconds, after which time its value is NOTE: stored in memory. If power is interrupted before this 15 second timeout period has elapsed, the edited state will not be not saved.

  • Page 7: Using The Brighteye Control Application

    USING THE BRIGHTEYE CONTROL APPLICATION The BrightEye PC and BrightEye Mac applications included on CD-ROM are designed to allow you to configure and control the BrightEye 2 from a personal computer. Installation and instructions for using this software application are given in the PDF manual on disk.
  • Page 8 BrightEye 2 Analog to Digital Converter Proc Menu A video processing amplifier allows the adjustment of parameters for the analog input signal. The Proc menu provides the following video processing controls: • Gain – adjusts the overall gain of the analog video signals passing through the converter from 50 to 150%.
  • Page 9 Trims Menu The Trim menu provides the adjustments below for the component Cr and Cb input video input gain and DC offsets to compensate for incorrect levels on the input sources: • Cr Gain – adjusts the input gain of the Cr channel video (± 30). •...

  • Page 10: Warranty And Factory Service

    You may also refer to the technical support section of the Ensemble web site for the latest information on your equipment at the URL below: http://www.ensembledesigns.com/support...

  • Page 11: Specifications

    SPECIFICATIONS Analog Input: Number: Type: Beta/SMPTE, Y, Pr, Pb NTSC, PAL Composite NTSC, PAL S-Video Impedance: 75 Ω Return Loss: > 40 dB Input DC: +/- 1 volt DC Input Hum: < 100 mV Serial Digital Output: Number: Type: 270 Mb/s SD Serial Digital (SMPTE 259M) Impedance: 75 Ω...

  • Page 12: Brighteye Power Supply Information

    BrightEye 2 Analog to Digital Converter BRIGHTEYE POWER SUPPLY INFORMATION Below is a list of power supplies and optional items that may have come with your BrightEye: BEPS BrightEye Individual Power Supply. BEPS6 Spider Power Supply. This powers 6 single high BrightEyes or 3 double high BrightEyes (BrightEye 90 family).
  • Page 13 GLOSSARY This is a brief glossary of commonly used terms associated with this product. AES/EBU The digital audio standard defined as a joint effort of the Audio Engineering Society and the European Broadcast Union. AES/EBU or AES3 describes a serial bitstream that carries two audio channels, thus an AES stream is a stereo pair.
  • Page 14 BrightEye 2 Analog to Digital Converter Chroma The color or chroma content of a signal, consisting of the hue and saturation of the image. See also Color Difference. Component In a component video system, the totality of the image is carried by three separate but related components.
  • Page 15 dBFS In Digital Audio systems, the largest numerical value that can be represented is referred to as Full Scale. No values or audio levels greater than FS can be repro- duced because they would be clipped. The nominal operating point (roughly corre- sponding to 0 VU) must be set below FS in order to have headroom for audio peaks.
  • Page 16 BrightEye 2 Analog to Digital Converter The International Electrotechnical Commission provides a wide range of worldwide standards. They have provided standardization of the AC power con- nection to products by means of an IEC line cord. The connection point uses three flat contact blades in a triangular arrangement, set in a rectangular connector.
  • Page 17 Multi-mode Multi-mode fibers have a larger diameter core (either 50 or 62.5 microns), and a correspondingly larger aperture. It is much easier to couple light energy into a multi-mode fiber, but internal reflections will cause multiple “modes” of the signal to propagate down the fiber.
  • Page 18 BrightEye 2 Analog to Digital Converter Return Loss An idealized input or output circuit will exactly match its desired impedance (generally 75 ohms) as a purely resistive element, with no reactive (capacitive or inductive elements). In the real world we can only approach the ideal. So our real inputs and outputs will have some capacitance and inductance.
  • Page 19 A Time Base Corrector is a system to reduce the Time Base Error in a signal to acceptable levels. It accomplishes this by using a FIFO (First In, First Out) memory. The incoming video is written into the memory using its own jittery timing.

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