Ensemble Designs BrightEye 25 Manuale utente

This user guide provides detailed information for using the BrightEye™25

Analog Video/Audio to SDI Converter with TBC and Embedder.

The information is 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

BrightEye-1

Analog Video/Audio

to SDI Converter with

TBC and Embedder

User Guide

Revision 5.0 SW v1.0.4

ENSEMBLE

DESIGNS

BrightEye 25 A-D Converter with TBC/FS and Embedder

PRODUCT OVERVIEW

BrightEye™ 25 converts analog composite video to SDI with simultaneous conver-

sion of four channels of audio and embedding. A TBC/Frame Sync is a standard

feature and allows this BrightEye to work with any sort of video input.

BrightEye 25 is versatile enough to handle applications from broadcasting to

desktop video with sources such as VTRs and incoming satellite feeds.

Basic controls are accessed on the front panel. The BrightEye Control application

provides access to video proc functions, input/output and built-in audio mixer

controls not available from the front panel.

A glossary of commonly used video terms is provided at the end of this user guide.

FUNCTIONAL DESCRIPTION

As shown in the functional block diagram below, analog video is converted at

12 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 four

channel mixer with shuffle and level control. One of the four audio groups is

selected for embedding into the SDI output.

The video and audio signals are joined in the embedder. This embedded signal

passes through a serializer to two timed SDI outputs on the rear of the unit.

BrightEye 25 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 Hertz.

It uses a standard IEC line cord and can be used anywhere in the world. It is

normal for the converter to be quite warm to the touch when operating.

BrightEye-2

SDI Outputs

Cpst In

Serializer

Embedder

Proc

Amp

TBC/

Frame Sync

12 bit

Video A-D

Converter

and

Decoder

Reference In

4 Channel

A to D

Analog Audio In

4 Channel

Mixer/Shuffler

BrightEye 25 Functional Block Diagram

APPLICATIONS

One useful application for the BrightEye 25 is for signal ingest from a satellite

receiver for feeding a video server requiring SDI video with embedded audio.

In this application shown below, analog video enters the BrightEye 25 and is

converted and decoded to digital video. The signal is time base corrected and

frame synchronized to the reference input.

The analog audio from the satellite feed enters the BrightEye 25 four channel

A-to-D converter. Adjustments for audio mixing, audio levels, and channel

shuffling can then be applied to the AES audio before it is embedded into the SDI

output signal feeding the video server.

BrightEye-3

BrightEye 25

SDI Out

Ref In

Video Server

House Reference

Analog Audio In

Analog Video In

Microwave

Receiver

BrightEye 25 Signal Ingest Application

BrightEye 25 A-D Converter with TBC/FS and Embedder

BrightEye-4

REAR CONNECTORS

All connections to the BrightEye 25 converter are made on the rear of the unit.

Refer to the illustration below.

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. Use the BrightEye Control applica-

tion included on CD-ROM to make adjustments as described in the OPERATION

section of this user guide.

Input/Output BNCs

There are four rear BNC connectors used as inputs and outputs as follows:

Cpst In

This BNC input accepts an analog composite signal, 525 or 625 line standard.

The NTSC or PAL input standard is auto detected.

Ref In

For synchronizing (genlocking) the input signal to an external reference, connect

a composite video (PAL or NTSC with the same line rate as the input video) to

the Ref In BNC.

SDI Outputs

Two timed SDI outputs are provided with the selected embedded audio group.

Analog Audio In

A 15 pin D connector provides the input for four channels of analog audio

according to the pinouts given in the table and shown in the illustration below.

BrightEye 25 Rear Connectors

AUD 2 AUD 1

AUD 3

AUD 4

Analog Audio Pinouts

Signal Pins Input

Aud 1 +, –, G 1, 2, 7 Input 1

Aud 2 +, –, G 5, 4, 3 Input 2

Aud 3 +, –, G 11, 12, 6 Input 3

Aud 4 +, –, G 15, 14, 13 Input 4

BrightEye-5

OPERATION

Control and operation of the BrightEye 25 unit is performed from the front panel

or remotely from a networked PC with the BrightEye Control application.

Some control settings are only available with BrightEye PC or Mac. These parameters

cannot be monitored or controlled from the front panel.

Front Panel Controls and Indicators

The front panel of the converter, shown in the figure below, provides status and

control indicators for the module.

Status Indicators

The following status indicators are provided on the front panel:

Illuminates green when a valid analog video input is detected on the Cpst

In BNC connector.

Ref (Reference)

Illuminates green when a valid NTSC or PAL reference is detected on the

Ref In BNC connector.

Pwr (Power)

Illuminates green when power is applied to the converter and the internal

voltage regulator is functioning correctly.

Group

The audio group (1, 2, 3, or 4) currently selected for embedding into the SDI

output is illuminated green.

Ch 1/2 and Ch 3/4

VU output level and the status of the Gain adjustment for each of these

channel pairs is indicated by the state the VU and Gain indicators. The VU

indicator illuminates red when the audio level exceeds the headroom level

set by the user (with the Peak Indicator control in BrightEye PC or Mac.)

NOTE:

BrightEye 25 Front Panel

BrightEye 25 A-D Converter with TBC/FS and Embedder

BrightEye-6

Additionally, the VU indicator illuminates orange when the output is above

0 VU, illuminates green when the output is above -20 VU, and doesn’t illu-

minate when the output is 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).

ADJUSTING PARAMETERS FROM THE FRONT PANEL

Use the Mode, Right Arrow, and Left Arrow buttons to select and adjust

parameters from the front panel.

Pressing the Mode button activates the front panel for editing and tabs between

each section of editable parameters.

Pressing the Right Arrow or Left Arrow advances the selection within a given

section of parameters, or increases (Right 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:

TBC/FS

This control enables the Frame Sync genlock function when an external reference

is present on the Ref In BNC.

Vid Gain

This control adjusts the gain of the analog video signals in the Digital-to-Analog

converter and encoder circuitry of the converter. The right arrow will increase the

gain, the left arrow will decrease it. The Vid Gain indicator will illuminate green

when the gain is set to its nominal or unity setting.

This is the setting which will produce correct analog output levels from a digital

input source which itself is at proper level. The Vid Gain indicator will illumi-

nate red whenever the control is adjusted either higher or lower than the nominal

setting. The gain can be reset to nominal (green) by pressing both arrows simulta-

neously.

NOTE:

BrightEye-7

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 25 from a personal

computer. Installation and instructions for using this software application are

given in the PDF manual on disk.

If the BrightEye 25 is connected to a computer running this software, the

following menus are available for controlling and monitoring the unit.

Refer to the menu illustrations and explanations below.

Input Menu

• Input Pres – gives read-only status indication of input video presence

(None, 525 Lock, or 625 Lock).

• Ref Pres – gives read-only status indication of reference video presence

(No Ref or Ref Present).

• Comb Mode – set the type of comb filtering from 3 Line or 5 Line.

• Analog Setup – set to On if setup is present on the analog input or Off if

no setup is present.

BrightEye 25 A-D Converter with TBC/FS and Embedder

Proc Menu

The Proc menu provide the following video adjustments:

• Gain – adjust the overall gain of the signal from 50 to 150%.

• Chroma – adjust the chroma gain of the signal from 50 to 150%.

• Pedestal – adjust the pedestal level of the signal +/- 5 IRE.

•Hue– adjust the hue of the signal +/- 180 degrees.

BrightEye-8

Audio Mixer Menu

• Outputs 1-4 – provide 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. Additionally, the VU indicator illuminates orange when

the output is above 0 VU, illuminates green when the output is above -20

VU, and doesn’t illuminate when the output is below -20 VU.

•Input Ch 1 – assign Input Channel 1 to the desired output bus or tie to

Channel 2. Set the input level using the slider control or by entering a

number in the window and pressing the Enter key on your PC.

•Input Ch 2 – assign Input Channel 2 to the desired output bus or tie to

Channel 1. Set the input level using the slider control or by entering a

number in the window and pressing the Enter key on your PC.

•Input Ch 3 – assign Input Channel 3 to the desired output bus or tie to

Channel 4. Set the input level using the slider control or by entering a

number in the window and pressing the Enter key on your PC.

•Input Ch 4 – assign Input Channel 4 to the desired output bus or tie to

Channel 3. Set the input level using the slider control or by entering a

number in the window and pressing the Enter key on your PC.

Selecting the Tie button in Input Ch 1 or Input Ch 2 will tie the two controls

together. Selecting the Tie button in Input Ch 3 or Input Ch 4 will tie the

controls for these channels together.

Select the Default button to return to the default value (0 dB).

Select the Invert button to invert the phase of the audio content.

BrightEye-9

BrightEye 25 A-D Converter with TBC/FS and Embedder

Timing Menu

The timing function operates in one of three modes:

1. When the Frame Sync control is turned On and a proper reference signal is

connected to the Ref In BNC, the video output of the unit will be syn-

chronous and locked to the external reference. The output may be timed

with respect to the Ref In using the timing controls. In this case, the unit

will accept asynchronous video and time base errors will be corrected.

2. When the Frame Sync control is turned On and no reference signal is

connected, the unit will act as a time base corrector only. The output will

not be synchronous 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 correction

required).

The following timing controls are available when the Frame Sync function is On:

• Ver Time – adjust the vertical timing of the signal in lines with reference to

the Frame Sync input.

• Hor Time – .adjust the horizontal timing of the signal in clocks with

reference to the Frame Sync input.

Use the following control to enable the Frame Sync function:

• Frame Sync – set the Frame Sync function On to genlock to the external

reference input to the module or Off for no Frame Sync.

BrightEye-10

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