Ensemble Designs BrightEye 55 User Manual
BrightEye 55 - Page 1
This user guide provides detailed information for using the BrightEye 55
Genlockable Sync Generator and Test Signal Generator unit.
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
•Adjustments
•Warranty and Factory Service
•Specifications
•Glossary
Genlockable
Sync Generator and
Test Signal Generator
User Guide
Revision 3.1 SW v1.0.2
ENSEMBLE
D E
S
I G N
S
TM
BrightEye 55
BrightEye 55 Genlockable SPG/TSG
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PRODUCT OVERVIEW
BrightEye 55 is a genlockable sync and test signal generator that can be used as
either a slave or master reference generator. It can lock to house reference or it
can lock to its own internal precision standard. BrightEye 55 is well suited for
any application requiring genlocking of signals to a house reference as well as
remote trucks, desktop, and fly packs.
Avariety of test signals including three color black variations, three color bar
variations, Safe Title, four sweep (multi-burst) variations, and several choices for
a user selectable test signal (selectable in BrightEye PC or Mac) are available on
the SDI and analog outputs.
ASlate ID with user-programmable text can overlay the test pattern output. The
cyclops feature adds a motion element on the video test signal, handy for live
applications.
The HD Tri Level Sync output provides reference to high definition equipment,
such as VTRs, disc recorders, and workstations. User-selectable formats include
720p, 1080i, 1080sF, and 1080p. Format selections and other controls are accessed
through the BrightEye Control application.
AES3id digital audio, analog audio with level adjustment, and embedded audio
reference outputs are provided.
Aglossary of commonly used video terms is provided at the end of this manual.
FUNCTIONAL DESCRIPTION
The BrightEye 55 can lock to an external house reference or it can lock to its own
internal precision standard reference. Refer to the block diagram on the next page
while reading this section.
The Ref In BNC on the rear of the unit will accept an external PAL or NTSC
composite video signal as a reference. If a valid reference is detected on the Ref In
BNC, the unit switches to this reference automatically. The SDI, Tri Level Sync,
and AES outputs will all be synchronous relative to this reference. The overall
vertical and horizontal timing of the outputs can be adjusted in the BrightEye PC
or Mac Timing menu. Reference status is reported on the front of the unit and in
BrightEye PC or Mac. The Composite video output will have the same ScH phase
(or color framing) as the external reference.
A special case exists when simultaneously using PAL and NTSC. If the output
standard for the module is PAL and an NTSC reference is connected, BrightEye
55 will lock to the reference at the fundamental clock frequency common to PAL
and NTSC. This is referred to as “clock-locked”. The is no horizontal and vertical
relationship but BrightEye 55 will have the same frequency accuracy as the
reference and the AES audio output will be synchronous simultaneously to the
BrightEye 55 PAL output and the NTSC reference. The same case is true for an
NTSC standard with a PAL reference.
When no external reference is connected to the unit, the fundamental clock source
for BrightEye 55 is taken from a temperature compensated oscillator which
guarantees frequency accuracy to within 1 cycle of subcarrier (better than 0.2
ppm) across the full operating temperature range. In addition, because it does not
require a crystal oven, BrightEye 55 is accurate immediately upon power up. This
ensures that the BrightEye 55 outputs meet the most stringent standards.
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The external reference or master clock drives the Sync Gen block. The reference
choice is user configured for 525 (NTSC) or 625 (PAL) line rates. The standard
definition output feeds horizontal and vertical sync to the internal Test Signal
Generator.
The HD Tri Level Sync Gen block is further user configured in BrightEye PC or
Mac to one of four HD formats (1080i, 1080p, 720p, or 1080sF). The Tri Level
Sync output frame rate can be selected from two choices in BrightEye PC or Mac,
23.98/50/59.94, the most commonly used, and 24/30/60, a frame rate reserved for
use with special applications such as film.
The module will apply the selected Tri Level Sync frame rates to specific formats
and line rates as shown in the table below.
BrightEye 55 Functional Block Diagram, Portrait View
Frame Rate 23.98/50/59.94 Hz 24/30/60 Hz
Line Rate NTSC PAL NTSC PA L
1080i 59.94 50 60 50
720p 59.94 50 60 50
1080p 23.98 25 24 25
1080sF 23.98 25 24 25
TM
Uses internal Precision Reference
when no valid reference
is detected on Ref BNC
Precision
Frequency
Reference
External
Reference
Input
Switches to External Reference
when valid reference
is detected on Ref BNC
HD Tri-Level
Sync Gen
Slate Text &
Cyclops
Motion Marker
Generator
6 Hz Pulse
Sync
Generator
Test Signal
Generator
Tone
Generator
2 Channel
D to A
Composite
Encoder
Audio Embedder
AES
Formatter
HD Tri-Level
Sync Output
Composite Output
SD SDI Output
AES Output
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BrightEye 55 Functional Block Diagram, Landscape View
HD Tri-Level
Sync Output
Composite Output
Encoder
Composite
Sync Gen
HD Tri-Level
SD SDI Output
Audio Embedder
Cyclops
Generator
Slate Text &
Motion Marker
AES Output
AES
Formatter
Tone
Generator
D to A
2 Channel
Generator
Test Signal
Sync
Generator
6 Hz Pulse
is detected on Ref BNC
when no valid reference
Precision
Reference
Uses internal Precision Reference
Frequency
Input
External
Reference
when valid reference
is detected on Ref BNC
Switches to External Reference
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The Sync Gen section also has an output which indicates coincidence between the
vertical intervals of the SD and HD outputs. In all formats except 1080sF/23.98,
the vertical intervals will be coincidental in every field or frame. In 1080sF/23.98
that coincidence occurs once for every 4 sF frames and every 5 SD (NTSC)
frames. Accordingly, this coincidence marker occurs at a 6 Hertz rate, and is
commonly referred to as a 6 Hz pulse.
The Tone Generator is also locked to the master clock or the external reference,
so the 48 KHz AES output will be synchronous to the video outputs. In NTSC
there are exactly 8008 audio samples in every five video frames. There will be
exactly 1920 audio samples in every PAL video frame.
The Tone Generator can be configured for a 1.0 KHz continuous tone, or an
interrupted tone which is coordinated with the Cyclops moving element. The Tone
Generator feeds the Analog Audio outputs through a precision digital to analog
converter. It feeds an AES formatter to produce a standard AES output. And
finally, it is fed to an audio embedder so that it’s present in the SDI output.
The user-selected test signal is produced in the Test Signal Gen block. The test
signal then passes to the Slate ID Text Generator which can overlay a line of user
programmable text across the test pattern. This block also has the Cyclops
Motion Marker which adds a moving element to the image.
This video signal is combined with the output of the Tone Generator to produce a
serial digital (SDI) output.
The same video signal is digitally encoded to composite video and converted to
analog form to drive the Analog Composite output.
BrightEye 55 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 warm to the touch when operating.
TM
BrightEye 55 Genlockable SPG/TSG
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APPLICATIONS
BrightEye 55’s complete feature set makes it a versatile genlock sync and test
signal generator. It’s small size also makes it an excellent choice for use in mobile
applications. An example of a BrightEye 55 application is given below.
Genlocked Test Signals
With the external reference capability, BrightEye 55 can be used to input test
signals to facility devices timed to the same house reference. A number of test
signals can be fed to a router, switcher, and other devices in a facility where
genlocked timing is important.
As shown in the example below, a BrightEye 55 is fed with the house reference to
the Ref In BNC. The audio tone can be embedded into the SDI timed test signal
output and fed to an SDI router and switcher. This allows each of the test signals
to be in time with the signals fed to the other devices.
BrightEye 55 Genlocked Test Signal Application
SDI Router
BrightEye 55
Ref In
SDI Test Signal
with Embedded
Audio Tone
SDI Switcher
House Ref
NTSC or PAL
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BrightEye 55 - Page 7
REAR CONNECTORS
All connections to the BrightEye 55 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 application included on CD-ROM to make adjustments as described in the OPERATION
section of this user guide.
Audio Out
The Audio Out provides two channels of an analog audio reference tone. Wiring
is done by inserting a 6 pin connector provided with the unit. Analog reference
levels can be configured from the BrightEye Control application. The pinouts for
the audio connector provided are shown in the diagram below.
To co nn ec t aud io to th is c on ne ct or ty pe , str ip t he au di o wir e to abo ut 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 re mo ve th e wir e, pu sh i n the pi n abo ve th e co nn ec ti on wi th a sma ll p oi nt ed
tool. This will release the wire from the connector.
Balanced Analog Audio Connection – to connect the audio output to an audio
XLR connector, connect the pins as follows:
•Attach Ground from Pin 1 of the Audio Out to Pin 1 of the XLR.
•Attach the + (plus) signal from Pin 2 of the Audio Out to Pin 2 of the XLR.
•Attach the – (minus) signal from Pin 3 of the Audio Out to Pin 3 of the XLR.
BrightEye 55 Rear Connectors
Audio Output Connector
BrightEye 5
TM
Pin 1
Push in to release
+
+
-
-
Ch 2Ch 1
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For Unbalanced Audio to a RCA Phono Input – to connect the audio output to a
consumer audio connector such as an RCA phono jack, connect the pins as
follows:
•Attach Ground from Pin 1 of the Audio Out to the shell, Shield or Ground of
the RCA Phono jack.
•Attach the + (plus) signal from Pin 2 of the Audio Out to the center pin of
the RCA Phono jack.
•The – (minus) signal is not used in this application.
AES Out
The AES Out is a BNC connector that provides a digital audio output in the AES
format. The AES Output can be configured from the front panel and from the
BrightEye Control application.
HD Tri Level Sync Out
The HD Tri Level Sync Out is an output BNC connector that supplies HD
Tri Level Sync in a number of user selected formats. Either the front panel or the
BrightEye PC or Mac can be used to select the desired format. One of two
different TLS output frame rates can be selected in the BrightEye PC or Mac
Config menu (23.98/50/59.94 or 24/30/60).
SDI Out
The SDI Out is a BNC connector that provides test patterns or black in serial
digital component format. Test patterns and video standard can be selected from
the front panel as well as the BrightEye Control application. This output
conforms to the ITU-R 601 standard for serial digital video, with SMPTE 259M
serialization at 270 Mb/s. The AES audio test signals can be embedded in this
signal using BrightEye PC or Mac controls.
Cpst Out (Composite Out)
The Cpst Out is a BNC connector that presents either NTSC or PAL composite
output. This output provides the same test pattern as SDI Out, only in composite
format. The test pattern can be selected from the front panel and the BrightEye
Control application.
Ref In (Reference In)
The Ref In BNC will accept a PAL or NTSC reference input to provide an overall
genlock timing reference for the unit.
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