TM BrightEye 20 Analog and Digital Audio Embedder or Disembedder User Guide ENSEMBLE D E S I G N S Revision 4 SW v1.0.9 This user guide provides detailed information for using the BrightEye™20 Analog and Digital Audio Embedder or Disembedder unit.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder PRODUCT OVERVIEW The BrightEye 20 is a compact solution for embedding or disembedding. With SDI input and output, and both analog and digital audio I/O, it is field configurable for embedding or disembedding. Mux/Demux mode, audio input source, AES group selection, VU status, and gain adjustment can be monitored and adjusted from the front panel. More advanced functionality is available via the BrightEye Control application.
TM BrightEye 20 upstream phasing problems. Peak Program and VU indication for each of the four output channels is displayed through the BrightEye Control application and on the front of the unit. The output of the mixer is delivered simultaneously in digital form on the two AES ports, and in analog form on the four analog audio outputs.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder APPLICATIONS The BrightEye 20 can be used as both an embedder or disembedder. Because of this flexibility and compact form factor, it is very useful in applications where size and versatility are important. Some examples of possible BrightEye 20 applications are given below. Embedder (Mux) In this application, the BrightEye 20 is configured as an embedder.
TM BrightEye 20 REAR CONNECTORS All connections to the BrightEye 20 are made on the rear of the unit. Refer to the illustration below. BrightEye 20 Rear Connectors Power Connection Connect a modular power supply to the 12 volt DC power input connection on the far left of the unit. Use the locking ring to secure it. USB Connector The USB connector is used to provide more comprehensive control, diagnostics, and upgrades to the unit from a PC or Mac.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder OPERATION Control and operation of the BrightEye 20 is performed from the front panel or with the BrightEye Control application. NOTE: Some control settings are only available with BrightEye PC or Mac. These parameters cannot be monitored or controlled with the front panel.
TM BrightEye 20 below -20 VU. The Gain indicator illuminates red when the gain level has been adjusted off from unity by the user. The 0 VU point corresponds in the digital domain to the digital reference level (-18 or -20 dBFS) and in the analog domain to the analog reference level (-10 or +4 dBu.) Pwr (Power) Illuminates green when power is applied to the converter and the internal voltage regulator is functioning correctly.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder Group Select This control selects the AES group for disembedding with the following choices: 1 – AES Group 1 2 – AES Group 2 3 – AES Group 3 4 – AES Group 4 Ch 1/2 and Ch 3/4 VU Indicators These indicators provide information about the level of the analog outputs on these channels. More detailed indicators are available through the BrightEye Control application.
TM BrightEye 20 • AES 1/2 and AES 3/4 Status – these controls indicate the status/behavior of the AES I/O connections. They show: No Input, Audio Present, Data Present, or Output Mode. • Dig Ref Level – selects the digital reference level. This pulldown lets you choose between: -20 dBFS or -18 dBFS. • Peak Indicator – selects the amount of headroom to use in determining peak levels.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder Mixer Menu • Outputs 1-4 – provides peak/VU status, with the same methodology as the front panel VU indicators, but on a per channel basis, rather than per channel pair. Peak/VU indicators illuminate red when the audio level on that channel exceeds the headroom level set by the user (with the Peak Indicator control.
TM BrightEye 20 WARRANTY AND FACTORY SERVICE Warranty Ensemble Designs, Inc. warrants this product to be free from defect in material and workmanship for a period of five years from the date of delivery. During this two year warranty period, Ensemble Designs, Inc. will repair any defective units at Ensemble’s expense if the unit should be determined to be defective after consultation with a factory technician. This warranty is not transferable.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder SPECIFICATIONS AES/EBU Digital Inputs: Number: Two (Total of four channels, selectable as inputs or outputs) Type: AES3id Connectorization: Coaxial, 75 Ω Bit Depth: 20 and 24 bit Sample Rate: 30 kHz to 100 kHz (Sample Rate Converted internally to 48 kHz) Reference Level: -18 or -10 dBFS (selectable) AC-3, Dolby-E: Supported when inputs are synchronous AES/EBU Digital Outputs: Number: Two (Total of four channels) (selectable as inputs or outputs)
TM BrightEye 20 Analog Audio Outputs: Number: Four (selectable as inputs or outputs) Type: Balanced, transformerless Impedance: 30 Ω Max. Output Level: 24 dBu Resolution: 24 bits, 128x Oversampled Reference Level: -10 dBu or +4 dBu Frequency Response: ±0.1 dB, 20 Hz to 20 kHz Crosstalk: <102 dB Dynamic Range: >106 dB General Specifications: Size: 5.625” W x 0.8 “ H x 5.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder 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). BEPS6-RP Redundant Power Supply for Spider. BERKMT BrightEye Rack Mount.
TM BrightEye 20 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. The AES/EBU standard covers a wide range of sample rates and quantizations (bit depths.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder 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. This method provides the best image fidelity with the fewest artifacts, but it requires three independent transmission paths (cables).
TM BrightEye 20 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 reproduced because they would be clipped. The nominal operating point (roughly corresponding to 0 VU) must be set below FS in order to have headroom for audio peaks. This operating point is described relative to FS, so a digital reference level of -20 dBFS has 20 dB of headroom before hitting the FS clipping point.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder IEC The International Electrotechnical Commission provides a wide range of worldwide standards. They have provided standardization of the AC power connection 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. The IEC specification does not dictate line voltage or frequency.
TM BrightEye 20 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. This will degrade the ability of the fiber to be used over long distances. See also Single mode.
BrightEye 20 Analog and Digital Audio Embedder or Disembedder Single mode A Single mode (or monomode) optical fiber carries an optical signal on a very small diameter (9 micron) core surrounded with cladding. The small diameter means that no internally reflected lightwaves will be propagated. Thus only the original “mode” of the signal passes down the fiber. A single mode fiber used in an optical SDI system can carry a signal for up to 40 kilometers.
TM BrightEye 20 TBC 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. This operation is closely associated with the actual digitization of the analog signal because the varying position of the sync timing must be mimicked by the sampling function of the analog to digital converter.
