Sonifex Redbox Series Reference manual

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The Redbox Range of Products
Features
•All are equipped with IEC mains lead and instruction manual.
•In-house design and manufacture ensures high quality control standards.
•All units are 115V 60Hz or 230V 50Hz switchable, or universal and all have a
front panel LED power indicator.
•Manufactured within ISO9000 standards and guaranteed CE compliant.
•Housed in eye catching red anodised aluminium cases.
Redbox are a range of audio and video interfaces designed for use in critical
broadcast applications where the product needs to be powered 24 hours a day, 365
days a year. Manufactured to the highest standards in our UK offices, utilisation of
the finest components and critical quality control techniques ensure that your
Redboxes work every time, for years to come. They are “fit and forget” products - you
can set them up, fit them in your installation and then forget about them.
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Redbox Introduction

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RB-ADDA Combined A/D and D/A Converter
Uses:
•To connect an analogue line level
audio signal into a digital mixer.
•To connect a digital recorder to an
analogue mixer in both directions.
•To convert an analogue amplifier
signal to an S/PDIF or AES/EBU input
on a mixer.
The RB-ADDA A/D and D/A converter is a 1U rack-mount which produces an
AES/EBU or S/PDIF level digital audio output from a balanced XLR or unbalanced
phono stereo audio input. It also produces a stereo balanced XLR or unbalanced
phono output from an incoming AES/EBU or S/PDIF digital input signal.
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Digital Audio Converters

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Features:
•Front panel control.
•Operation up to 192kHz.
•AES/EBU & wordclock synchronising
inputs, so that the A/D and D/A
sections can operate independently.
The RB-ADDA2 A/D and D/A converter is a 1U rack-mount which produces an
AES/EBU, S/PDIF or TOSlink optical level digital audio output from a balanced XLR
or unbalanced phono stereo audio input. It also produces a stereo balanced XLR or
unbalanced phono output from an incoming AES/EBU, S/PDIF or TOSlink optical
digital input signal.
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Digital Audio Converters
RB-ADDA2 Combined A/D & D/A Converter

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RB-SC1 Sample Rate Converter
Features:
•Superb conversion quality.
•AES/EBU and S/PDIF inputs and
outputs.
•AES/EBU,S/PDIF and TTL wordclock
synchronizing inputs.
•Sample rates up to 24bit 96kHz.
Ideal for the transfer of digital audio between different digital equipment, the
RB-SC1 sample rate converter standardises the sample rate of a digital audio
signal to one of 32kHz, 44.1kHz, 48kHz or 96kHz, or to a synchronising input. Both
audio inputs and outputs have push-button switches to select either AES/EBU or
S/PDIF. The synchronising input can be selected from one of AES/EBU, S/PDIF or
TTL word clock.
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Digital Audio Converters

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RB-SC2 Dual Sample Rate Converter
Features:
•Supports sample frequencies up to
176.4kHz & 192kHz.
•Output sample rate set by internal
clock or external sync.
•Has 2 independent sample rate
converter circuits & can function as a
full bi-directional sample rate
converter.
The RB-SC2 sample rate converter is a 1U rack-mount which produces AES/EBU,
S/PDIF and TOSlink optical level digital audio outputs from a balanced AES/EBU,
S/PDIF and TOSlink optical level digital audio inputs. The sample rate of the outputs
can be set by an internal clock or from various external synchroniser sources.
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Digital Audio Converters

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RB-DAC1 Digital to Analogue Converter
Features:
•Superb quality and pristine audio
clarity with 24 bit, 96kHz operation.
•AES/EBU and S/PDIF digital inputs.
•Both balanced XLR and unbalanced
phono outputs.
•Front panel headphone output with
volume control.
Using 24 bit, 96kHz capable devices, the RB-DAC1 D/A Converter is a 1U rack-
mount which produces a stereo balanced XLR or unbalanced phono output from an
incoming AES/EBU or S/PDIF digital input signal. There is also a headphone output
with volume control for monitoring purposes.
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Digital Audio Converters

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RB-SP1 Digital Splitter and Combiner
Features:
•Can be used for interfacing stereo
and mono signals to digital mixing
desks, e.g. can split a digital stereo
signal into 2 digital mono signals.
•Can handle sample rates up to
96kHz and sample sizes of 16, 20
and 24 bit.
The RB-SP1 digital splitter & combiner is used to interface stereo and
mono AES/EBU & S/PDIF signals to digital mixing desks by splitting the left
and right signals of a stereo XLR to two separate XLR’s, and vice versa by
combining them.
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Digital Audio Converters

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RB-SYA Analogue Video Sync Board
for RB-SC2
Uses:
•Used to synchronise the outputs of
the RB-SC2 to a 48kHz sample rate.
•Used to synchronise the outputs of
the RB-TGHD(B & X).
The Analogue video sync board will accept a composite signal of NTSC (525), PAL
(625) & SECAM (625) signals covered by SMPTE-170-M (NTSC) and ITU-R BT.470-6
(PAL & SECAM.
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Synchronisation Add-On Boards

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RB-SYD Digital Video Sync Board
for RB-SC2
•Used to synchronise the outputs of
the RB-SC2 to a 48kHz sample rate.
•Used to synchronise the outputs of
the RB-TGHD(B & X).
The Digital video sync board will accept 270Mbps SD-SDI and HD-SDI signals
covered by SMPTE-259-M-C (SD) and SMPTE-292M (HD).
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Synchronisation Add-On Boards

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RB-SYE Sync Board
Uses:
•Used to synchronise the outputs of
the RB-TGHD(B & X).
The AES/EBU sync board will accept a digital audio input signal with a sample
frequency between 32kHz and 192 kHz. When using the RB-SYE sync board, the
Channel Status information that is encoded in the input data signal is copied to all
digital output channels.
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Synchronisation Add-On Boards

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RB-SYW Wordclock Sync Board for RB-TGHD
Uses:
•Used to synchronise the outputs of
the RB-TGHD(B & X).
The Wordclock sync board will accept a distributed clock running at the desired
sample frequency between 32 kHz and 192 kHz. The signal can be differential or
single ended TTL level
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Synchronisation Add-On Boards

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RB-DS2 Stereo Delay Synchroniser
& Time-Zone Delay
•Has both balanced analogue and
AES/EBU digital audio I/O.
•Up to 10.5 secs of delay (96kHz).
•Selectable in samples, fields, frames,
msec, metres.
•CF can provide multiple-hour delay.
The RB-DS2 is a stereo audio delay synchroniser used for resynchronising audio to
video following delay processes such as standards conversion, transmission delay,
logo insertion, video aspect ratio conversion and network delays. It can be used for
fixed installations to correct a permanent audio delay, or on an intermittent basis to
provide occasional correction, for example for live links. Acting as an A/D or D/A, the
sonic quality of the RB-DS2 is superb with silent switching. A CF card can provide
delays of many hours for time-zone delay applications.
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Synchronisers, Delays & Silence Detectors

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RB-PD2 Stereo Profanity Delay
•Up to 55 seconds of delay available
in user defined dump segments.
•Automatic delay creation ramp-up
and amp-down algorithms.
•Flashcard slot for dump playback
of jingles.
•Full remote and serial control.
The RB-PD2 is a stereo audio profanity delay used for live broadcast programs to
prevent unwanted or obscene material from being transmitted. It features an
automatic audio stretch algorithm that allows between 2 and 55 (*) seconds of delay
to be built up live whilst “on air”, whilst maintaining the correct pitch. The delay can
also be acquired whilst playing a pre-selected audio file on a Compact Flash™
memory card. When the program is complete, the audio stretch algorithm
seamlessly reduces the delay to zero.
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Synchronisers, Delays & Silence Detectors

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RB-DD4 4 Channel Digital Audio Delay
Features:
•AES/EBU, S/PDIF and TOSLink I/O.
•Programmable for different delay
durations, levels and switching
functions so that you can program
the unit for your specific application.
•Front panel & serial control.
The RB-DD4 4 channel digital audio delay allows you to delay 4 mono channels of
audio independently or together. Each channel delay is user selectable from
multiples of common video frame rates, or a user defined value set via the serial
interface. The unit is perfect for synchronizing audio to video which has been
delayed by processing latency.
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Synchronisers, Delays & Silence Detectors

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RB-SD1 Silence Detect Unit
Features:
•Configurable silence duration
& detection level.
•Automatic or manual resetting.
•GPI output to start local playback
equipment.
•Over 500 units sold worldwide.
The RB-SD1 silence detection unit is a 1U rack-mount device used to monitor an
unattended stereo studio feed and in the event of the signal going“quiet” after a
given period the unit will switch through an alternative stereo audio signal. This
signal could be a recorded message (e.g. “normal service will be resumed”, etc), a
feed from a CD player or minidisc machine, or an alternative recorded programme.
Controls are provided to start external equipment and to provide remote status
indication.
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Synchronisers, Delays & Silence Detectors

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RB-DSD1 Digital Silence Detection Unit
Features:
•AES/EBU, S/PDIF & TOSlink inputs
& outputs.
•Configurable silence duration
& detection level.
•Automatic or manual resetting.
•GPI output to start local playback
equipment.
The RB-DSD1 digital silence detection unit works in a similar way to the Sonifex
RB-SD1 analogue silence detection unit, but has AES/EBU, S/PDIF and TOSlink
inputs and outputs instead of analogue inputs and output respectively. Designed to
switch from one input to another in the event of loss of audio, the unit is ideal at
transmitter sites, or after the master output of a studio, to switch in another audio
source, or simultaneous broadcast, should a master source fail.
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Synchronisers, Delays & Silence Detectors

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RB-UL1 Single Stereo Unbalanced to
Balanced Converter
Features:
•Converts 2 x RCA unbalanced inputs
to 2 x XLR balanced outputs.
•Rack-mount available.
The RB-UL1 is a single stereo unit for interfacing domestic or semi-professional
unbalanced equipment, such as a CD player, to professional balanced line levels.
The two RCA unbalanced inputs have an impedance of 10kΩ and are routed to two
balanced XLR-3 outputs with an output impedance of <50Ω.
The output gain can be individually adjusted for left and right channels by using
pre-set potentiometers accessible through the rear panel.
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Matching Converters

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RB-UL2 Dual Stereo Unbalanced
to Balanced Converter
Features:
•Converts 4 x RCA unbalanced inputs
to 4 x XLR balanced outputs.
•Can be surface mounted and
optionally front or rear rack-
mounted.
The RB-UL2 is a dual stereo unit for interfacing domestic or semi-professional
unbalanced equipment to professional balanced line levels. All connections are on
the rear panel. Four RCA unbalanced inputs have an impedance of 10kΩ and are
routed to four balanced XLR-3 outputs with an output impedance of <50Ω.
The output gain can be individually adjusted for left and right channels by using
pre-set potentiometers accessible through the rear panel, allowing you to feed both
balanced and unbalanced equipment.
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Matching Converters

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RB-UL4 Quad Stereo Unbalanced
to Balanced Converter
Features:
•Converts 8 x RCA unbalanced inputs
to 8 x XLR balanced outputs.
•1U rack unit can be surface
mounted.
•Ideal for balancing domestic outputs
for surround sound applications.
The RB-UL4 is a 1U rack-mount quad stereo unit for interfacing domestic or
semi-professional unbalanced equipment to professional balanced line levels.
All connections are on the rear panel. The eight RCA unbalanced inputs have an
impedance of 10kΩ and are routed to eight balanced XLR-3 outputs with an output
impedance of <50Ω.The output gain can be individually adjusted for left and right
channels by using pre-set potentiometers accessible through the rear panel.
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Matching Converters

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RB-LU4 Quad Stereo Balanced
to Unbalanced Converter
Features:
•Converts 8 x XLR balanced inputs to
8 x RCA unbalanced outputs.
•1U rack unit can be surface
mounted.
The RB-LU4 is a 1U rack-mount quad stereo unit for interfacing professional
balanced line levels to domestic or semi-pro unbalanced equipment, e.g. for
connecting a pro satellite receiver to a consumer hi-fi system. All connections are on
the rear panel. The eight balanced XLR-3 inputs have an impedance of 20kΩ and are
routed to eight unbalanced RCA outputs with an output impedance of <50Ω.
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Matching Converters