Ensemble Designs BrightEye75 User Manual Download Page 4 | Manualshive

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BrightEye 75 HD/SD Analog to Digital Converter and Analog Audio Embedder

BrightEye 75 - Page 4

APPLICATIONS

The BrightEye 75 is well-suited to applications using HD Cameras or other
devices with analog I/O. The built-in TBC/Frame Synchronizer allows you to feed
asynchronous or noisy signals to the BrightEye 75. These are then digitized and
time-base corrected by noise-tolerant tracking circuitry.
The example below shows a three-camera, live studio setup. Full bandwidth
analog video from an HD camera is fed to a BrightEye 75 and converted to HD SDI
digital video. The signal is time base corrected and frame synchronized to the
reference input. The signal is then sent to a Production Switcher and out to live
broadcast.
The analog audio from the cameras enters the BrightEye 75 two-channel
A to D converter. Adjustments for audio mixing, audio levels, and channel
shuffling can then be applied to the audio before it is embedded into the SDI
output signal and fed to air.

Production

Switcher

BrightEye 75

BrightEye 75

BrightEye 75

HD SDI

HD SDI

HD SDI

Analog HD Video

HD SDI

To Air

Ref In

Ref In

Ref In

Ref In

Y

Pr

Pb

Y

Pr

Pb

Y

Pr

Pb

1

2

3

BrightEye 75 Signal Ingest Application for HD Signals

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Summary of Contents for BrightEye75

Page 1: ...s organized into the following sections Product Overview Functional Description Applications Rear Connectors Operation Front Panel Controls and Indicators Using the BrightEye Control Application Warranty and Factory Service Specifications Glossary TM BrightEye 75 HD SD Analog to Digital Video Converter and Analog Audio Embedder User Guide Revision 2 1 SW v1 0 7 ENSEMBLE D E S I G N S ...

Page 2: ...ed at 14 bits of resolution and digitally decoded to YCrCb components 601 The signal is then time base corrected and frame synchronized to the reference input Proc amp adjustments are provided for the converted video The audio is converted to digital and then passes through the built in 2 channel mixer with shuffle and level control The video and audio signals are joined in the embedder This embed...

Page 3: ...s Input Pr R In C Pb B In Cpst Y G In Serializer Embedder Proc Amp TBC Frame Sync 14 bit A to D Converter and Decoder Reference In Analog HD or SD SDI 2 Channel A to D 2 Channel Analog Audio In Mixer Shuffler BrightEye 75 Functional Block Diagram Landscape View ...

Page 4: ...amera is fed to a BrightEye 75 and converted to HD SDI digital video The signal is time base corrected and frame synchronized to the reference input The signal is then sent to a Production Switcher and out to live broadcast The analog audio from the cameras enters the BrightEye 75 two channel A to D converter Adjustments for audio mixing audio levels and channel shuffling can then be applied to th...

Page 5: ...dio input Wiring is done by inserting the connector provided with the unit The pinouts are shown in the diagram below To connect audio to this connector strip the audio wire to about 3 8 8 mm Solder tinning is not required Push the wire into the opening at the bottom of the connector to seat the connection This will snap the wire into place To remove the wire push in the pin above the connection w...

Page 6: ... BNCs There are five rear BNC connectors used as inputs and outputs as follows HD SD Out This BNC outputs a timed SDI video signal with embedded audio Pr R In This BNC accepts the following signal formats Beta or SMPTE Pr Y R input RGB R input C Pb B In This BNC accepts the following signal formats S Video composite C input Beta or SMPTE Pb input RGB B input Cpst Y G In This BNC accepts the follow...

Page 7: ...RS The following status indicators are provided on the front panel In Illuminates green when a valid analog video signal in the currently selected format is detected on the corresponding BNC connector Ref Reference Illuminates green when a valid NTSC or PAL reference is detected on the rear panel Ref In BNC connector Source Select The currently selected video input format illuminates green TBC Ill...

Page 8: ... Arrow or decreases Left Arrow the value of a selected parameter The LED of an edited parameter will blink for 15 seconds after which time its value is stored in memory If power is interrupted before this 15 second timeout period has elapsed the edited state will not be not saved The controls and their indicators are described below Source Select Selects the video input source format from the foll...

Page 9: ...inal setting To reset gain to its nominal setting green press both arrows simultaneously Audio Output level and the status of audio channels 1 and 2 are indicated by the state the VU and Gain indicators VU This indicator illuminates red when the audio level exceeds the headroom level set with the Peak Indicator control in BrightEye PC or Mac Additionally the VU indicator illuminates yellow when th...

Page 10: ...iven in the PDF manual on disk If the BrightEye 75 is connected to a computer running this software the following menus are available for controlling and monitoring the unit Input Menu Input Pres indicates the status of the video input None SD 525 SD 625 HD 525 or HD 625 Input Sel select the type of input signal to the unit from the pulldown as Composite Y C RGB SMPTE Beta or Bars Analog Setup set...

Page 11: ...ll gain of the signal from 0 to 150 Chroma adjust the chroma gain of the signal from 0 to 150 Pedestal adjust the pedestal level of the signal 5 IRE Hue adjust the hue of the signal 180 degrees To set a value for any of these parameters adjust the slider click the right or left Arrow button or type a value into the appropriate field To set a parameter to its nominal setting click the Default butto...

Page 12: ...room level set with the Peak Indicator control in the Config menu Additionally the indicator illuminates yellow when the output level exceeds 0 VU or illumi nates green when the output is above 20 VU When the output level is below 20 VU the indicator does not illuminate Input Ch 1 assign Input Channel 1 to the desired output bus or tie it to Channel 2 Set the input level using the slider or by ent...

Page 13: ...time base corrector only The output is not syn chronous to any reference including the input This mode allows a noisy input signal to be time base corrected for a clean stable output 3 When the Frame Sync control is turned Off any reference signal to the Ref In BNC is ignored The video input is synchronous to the video output when a nearly perfect clean video input signal is present no time base c...

Page 14: ...g input or Off if no setup is present V Blanking set the vertical blanking to Narrow NTSC lines 1 9 PAL lines 1 6 or Wide NTSC lines 1 20 PAL lines 1 22 Comb Mode set the comb filtering to Comb On or Comb Off Peak Indicator selects the amount of headroom used in determining peak indication Chose Clipping 2 dB Headroom 4 dB Headroom 6 dB Headroom 8 dB Headroom or 10 dB Headroom Dig Ref Level select...

Page 15: ...ues shown below are typical though each BE75 may vary When input is Cpst adjust Composite Trim and Saturation Trim from 100 to 100 When input is Y C adjust Composite Trim and Saturation Trim from 100 to 100 When input is RGB adjust CAV Y C Trim CAV Cr R Trim and CAV Cb B Trim from 100 to 100 When input is SMPTE adjust CAV Y C Trim CAV Cr R Trim and CAV Cb B Trim from 100 to 100 When input is BETA ...

Page 16: ...attempt to dissemble or adjust factory set presets without factory authorization Factory Service If you require service under warranty or not please contact Ensemble Designs and ask for Customer Service before you return the unit This will allow the service technician to provide any other suggestions for identifying the problem and recommend possible solutions You may also refer to the technical s...

Page 17: ... bits 128x oversampled Sample Rate 48 KHz Reference Level 10 dBu or 4 dBu Frequency Response 0 1 dB 20 Hz to 20 KHz Crosstalk 106 dB Dynamic Range 106 dB Serial Digital Output Number One Type Follows input standard HD Serial Digital 1 485 Gb s SMPTE 274M 292M or 296M or SD Serial Digital 270Mb s SMPTE 259M C Impedance 75 1 Return Loss 15 dB Max Cable Length 100 meters for HD 300 meters for SD Beld...

Page 18: ...utput Group Assign One of four groups Channels Two Bit Depth 24 Bit Reference Input Number One Signal Type 1 V p p Composite Video PAL or NTSC Impedance 75 1 Return Loss 40 dB General Specifications Size 5 625 W x 0 8 H x 5 5 D 143 mm x 20 mm x 140 mm including connectors Weight 15 oz Power 12 volts 6 watts 100 230 VAC modular power supply not included Temperature Range 0 to 40 C ambient Relative ...

Page 19: ...r Power Supply BEPS6 Spider Power Supply powers 6 single high BrightEyes or 3 double high BrightEyes BERKMT BrightEye Rack Mount holds 3 to 6 BrightEyes 1RU high 6 152 4 mm deep 3 lbs 1 4 kg BEBP BrightEye Blank Panel single high for empty slots in Rack Mount BEBPD BrightEye Blank Panel double high for empty slots in Rack Mount 5082 I 1 Port AES 110 Ohm Adapter BEAC Analog Audio Breakout Cable wit...

Page 20: ...d between fields No picture information is trans mitted during these times which are required in CRT displays to allow the electron beam to be repositioned for the start of the next line or field They are also used to carry synchronizing pulses which are used in transmission and recovery of the image Although some of these needs are disappearing the intervals themselves are retained for compatibil...

Page 21: ...ferred to as chroma crawl are only the most obvious result Composite television is the most commonly used format throughout the world either as PAL or NTSC It is also referred to as Encoded video Color Difference Color Difference systems take advantage of the details of human vision We have more acuity in our black and white vision than we do in color This means that we need only the luminance inf...

Page 22: ...ong in the same bitstream as an SDI or HD SDI signal by taking advantage of the gaps in the transmission which correspond to the horizontal and vertical intervals of the television waveform This technique an be very cost effective in transmission and routing but can also add complexity to signal handling issues because the audio content can no longer be treated inde pendently of the video Frame Sy...

Page 23: ...petition rate from the original 24 frames that make up each second of film they just project each one twice IRE Video level is measured on the IRE scale where 0 IRE is black and 100 IRE is full white The actual voltages that these levels correspond to can vary between formats ITU R 601 This is the principal standard for standard definition component digital video It defines the luminance and color...

Page 24: ...s two very significant advantages over metallic copper cables Firstly it does not require that the two endpoint devices have any electrical con nection to each other This can be very advantageous in large facilities where problems with ground loops appear And secondly and most importantly an optical interface can carry a signal for many kilometers or miles without any degradation or loss in the re...

Page 25: ... details of both PAL and NTSC this relationship is not the same at the beginning of each frame In PAL the pattern repeats ever 4 frames 8 fields which is also known as the Bruch Blanking sequence In NTSC the repeat is every 2 frames 4 fields This creates enormous headaches in editing systems and the system timing of analog composite facilities SDI Serial Digital Interface This term refers to input...

Page 26: ... systems like VHS Time base error will render a signal unusable for broadcast or editing purposes Tri Level Sync An analog sync reference signal that is used in High Definition systems Tri Level Sync is constructed with three signal levels the sync pulses extend above and below a mid level average voltage the blanking level Unlike conventional analog sync which is bi level the proper 50 pickoff po...

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