Nuendo DD8 User manual

Nuendo DD8
Operation Manual
Benutzerhandbuch
Mode d’emploi

NUENDO DD 8
ii
Table of Contents
1. Introduction........................................................................................................5
2. Package Contents.............................................................................................5
3. Brief Description and Characteristics.........................................................5
4. Technical Specifications .................................................................................7
5. First Usage –Quick Start..............................................................................10
6. The AES to ADAT/TDIF Converter.............................................................13
7. The ADAT/TDIF to AES/EBU Converter...................................................19
8. Clock Section ...................................................................................................25
9. Word Clock .......................................................................................................30
10. Conversion Modes and Notes.................................................................34
11. Technical Background ...............................................................................38
12. Controls and Connectors..........................................................................42
13. Connector Pinouts.......................................................................................43
14. Block Diagram...............................................................................................44
15. Warranty..........................................................................................................45
16. Appendix........................................................................................................45

NUENDO DD 8
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ENGLISH DEUTSCH FRANÇAIS
Inhaltsverzeichnis
1. Einleitung ..........................................................................................................47
2. Lieferumfang....................................................................................................47
3. Kurzbeschreibung und Eigenschaften....................................................47
4. Technische Merkmale...................................................................................49
5. Inbetriebnahme - Schnellstart...................................................................52
6. Der AES zu ADAT/TDIF Konverter.............................................................55
7. Der ADAT/TDIF zu AES/EBU Konverter...................................................62
8. Clock Sektion....................................................................................................68
9. Wordclock..........................................................................................................73
10. Betriebsarten und Anwendungshinweise..........................................77
11. Technischer Hintergund............................................................................81
12. Bedienungselemente und Anschlüsse.................................................85
13. Steckerbelegungen.....................................................................................86
14. Blockschaltbild..............................................................................................87
15. Garantie...........................................................................................................88
16. Anhang ............................................................................................................88

NUENDO DD 8
iv
Table de Matières
1. Introduction.....................................................................................................91
2. Contenu du produit ......................................................................................91
3. Description rapide et Caractéristiques...................................................91
4. Caractéristiques Techniques......................................................................93
5. Première Utilisation –Démarrage rapide..............................................96
6. Le Convertisseur AES vers ADAT/TDIF....................................................99
7. Le convertisseur ADAT/TDIF vers AES/EBU.........................................106
7.4 Sorties AES/EBU..........................................................................................109
8. Section Horloge............................................................................................112
9. Word Clock .....................................................................................................118
10. Modes de Conversion et Notes.............................................................122
11. Eléments Techniques...............................................................................126
12. Contrôles et Connecteurs.......................................................................131
13. Brochage des Connecteurs....................................................................132
14. Schéma..........................................................................................................133
15. Garantie.........................................................................................................134
16. Appendice....................................................................................................134

NUENDO DD 8
English–5
ENGLISH
1. Introduction
WiththeNuendoDD8youhaveanincrediblyversatiledigitalinterface
to your supply. What at first looks like a simple AES/TDIF/ADAT format
converter turns out to be the universal problem solver at a closer look.
From small project studios to broadcast and television, the Universal
FormatConverter is the perfect link between the formats mostly used
today.
The Nuendo DD 8 contains elaborate technology and the latest inte-
grated circuits, delivering 8 full channels in 24 bit and 96 kHz. The Nu-
endo DD 8 is a uniquely powerful and high-quality device, which will
excite you even after many years of operation.
2. Package Contents
Please check that your Nuendo DD 8 package contains each of the fol-
lowing:
•Nuendo DD 8
•Manual
•Power chord
•Optical cable 2 x 2 m (TOSLINK)
3. Brief Description and Characteristics
TheNuendoDD8consistsoftwoupto16-channel digital format con-
vertersinreferencequality,inastandard19"boxwith 1HU height. The
compactdevicehasnumerousextraordinaryfeatureslikeIntelligent
ClockControl(ICC),SyncCheck®,SyncAlign®,BitclockPLL,patchbay
functionalityandactivejittersuppressionperSD-PLL.Switchablehigh-
endsamplerateconverters(SRC)allowforbothsamplerate conversion
inbestpossiblequalityaswellasclock-decouplingofallAES/EBUinputs.

NUENDO DD 8
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All of the Nuendo DD 8's I/Os support 96 kHz/24 bit. As ADAT optical
andTDIFarerestricted to48kHz,inDSmode (DoubleSpeed)twochan-
nels are being used for the transmission of one channel's data. The
SampleSplit algorithm used is also implemented in Steinberg’s
Nuendo 96/52. Thus the Nuendo DD 8 also serves as an ideal AES/EBU
frontend for these interface cards, on both Mac and PC.
The format conversion between AES/EBU and ADAT/TDIF operates in
both directions at the same time, both completely independent or in-
telligently coupled. LEDs of different colours show the present state of
incomingandoutgoingsignalsandoftheinternalprocessinginaclear
way.
The unique Intelligent Clock Control (ICC) allows for a flexible use with
internalclock(44.1,48,88.2and96kHz),externalwordclockorthedig-
ital input signals. These options being available for both directions are
intelligently coupled in a way typical for Steinberg and easy to apply
thanks to a clear and easily understandable display of the Lock and
Syncstates. Besides, theunique CopyMode allows for operationas dig-
ital patchbay and signal distributor. Up to 16 channels can be distrib-
uted and converted at the same time. In few words: The Nuendo DD 8
is a true IntelligentAudioSolution .

NUENDO DD 8
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ENGLISH
4. Technical Specifications
•Power supply: Internal, 100-240 V AC, 15 Watts
•Dimensions: 483 x 44 x 205 mm
•Weight: 2 kg
4.1 Inputs
AES/EBU
•4 x XLR, transformer balanced, ground-free, according to AES3-1992
•High-sensitivity input stage (< 0.3 Vss)
•SPDIF compatible (IEC 60958)
•Accepts Consumer and Professional format, copy protection will be ignored
•Single Wire: 4 x 2 channels 24 bit, up to 96 kHz
•Double Wire: 4 x 2 channels 24 bit 48 kHz, equalling 4 channels 96 kHz
•Lock range: 27 kHz –103 kHz
•Jitter when synced to input signal: < 3 ns
ADAT Optical
•2 x TOSLINK, according to Alesis specification
•Standard: 8 channels 24 bit, up to 48 kHz
•Copy Mode: up to 2 x 8 channels 24 bit / 48 kHz
•SampleSplit(S/MUX):2x8channels24 bit/48kHz,equalling8channels24bit
96 kHz
•Bitclock PLL ensures perfect synchronisation even in varispeed operation
•Lock range: 33 kHz –56 kHz
•Jitter when synced to input signal: < 2 ns
TDIF
•2 x D-sub 25 pol., according to TDIF-1
•Standard: 8 channels 24 bit, up to 48 kHz
•Copy Mode: up to 2 x 8 channels 24 bit / 48 kHz
•SampleSplit (Dual Line): 2 x8 channels24 bit/ 48 kHz,equalling 8channels 24
bit 96 kHz
•SD-PLL for low jitter synchronisation even in varispeed operation
•Lock range: 27 kHz –56 kHz
•Jitter when synced to input signal: < 3 ns

NUENDO DD 8
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Word Clock
•BNC, not terminated (10 kOhm)
•Automatic Double Speed detection and internal conversion to Single Speed
•SD-PLL for low jitter synchronisation even in varispeed operation
•AC-coupling, not effected by DC-offsets within the network
•Signal Adaptation Circuit: signal refresh through auto-center and hysteresis
•Overvoltage protection
•Level range: 1.2 Vss –5.6 Vss
•Lock range: 27 kHz –112 kHz
•Jitter when synced to input signal: < 3 ns
4.2 Outputs
AES/EBU
•4 x XLR, transformer balanced, ground-free, according to AES3-1992
•Output voltage Professional 4.5 Vss, Consumer 2.1 Vss
•Format Professional according to AES3-1992 Amendment 4
•Format Consumer (SPDIF) according to IEC 60958
•Single Wire: 4 x 2 channels 24 bit, up to 96 kHz
•Double Wire: 4 x 2 channels 24 bit 48 kHz, equalling 4 channels 96 kHz
ADAT Optical
•2 x TOSLINK
•Standard: 8 channels 24 bit, up to 48 kHz
•Copy Mode: up to 2 x 8 channels 24 bit / 48 kHz
•SampleSplit(S/MUX):2x8channels24 bit/48kHz,equalling8channels24bit
96 kHz
TDIF
•2 x D-sub 25 pol., according to TDIF-1
•Standard: 8 channels 24 bit, up to 48 kHz
•Copy Mode: up to 2 x 8 channels 24 bit / 48 kHz
•SampleSplit (Dual Line): 2 x8 channels24 bit/ 48 kHz,equalling 8channels 24
bit 96 kHz

NUENDO DD 8
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ENGLISH
Word Clock
•BNC
•Max. output voltage: 5 Vss
•Output voltage @ 75 Ohm: 4.0 Vss
•Impedance: 10 Ohm
•Frequency range: 27 kHz –56 kHz
4.3 Digital
•Low Jitter Design: < 1 ns internal
•Internal sample rates: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz
•Internal resolution: 24 bit
4.4 Sample Rate Converter
•Self adjusting, high order aliasing filter (-110 dB)
•Resolution: 24 bit
•Dynamic range: 128 dBA
•Distortion (THD+N): -117 dB (0.00014%)
•Input / Output sample rate range: 27 kHz - 103 kHz
•Supports varispeed operation through fast tracking

NUENDO DD 8
English–10
5. First Usage –Quick Start
The user interface of the Nuendo DD 8 is characterized by a clearly
structuredarchitectureandanunambiguouslabellingofthefrontand
rearsides.Thedevicecanthusbeusedwithoutamanualwithoutprob-
lems, because numerous LEDs show the state of the device and all in-
coming and outgoing signals in a strictly logical way.
However, we have to question this statement a little, because we
couldn'tstopourselvesandintegrated everything in the Nuendo DD 8
that we could think of and that was in any way possible. As a conse-
quence, you will find some application examples in chapter 10 that
break up the logical structure of the front board. Those are however
very special applications for professionals, where we anticipate both
the understanding of those modes and the ability to read a manual.
Whenbeing switched on for thefirst time, theNuendo DD 8comes up
in a default mode, which should be appropriate for most applications.
Both converters are set to their typical format conversion modes, and
synchronize to the input signals.
AES to ADAT/TDIF:
•SOURCE: AES
•SRC not active
•Slave mode (CLOCK AES / INPUT)
ADAT/TDIF to AES:
•SOURCE: ADAT
•Slave mode (CLOCK ADAT / INPUT)
•AES STATE PRO
Ifthe device is beingused withTDIF, onlysource TDIF insteadof ADAT
has to be selected in the right part.
TheNuendo DD 8 remembersallsettingsbeforeswitching off and sets
them automatically when switching on the next time.
A quick guide for operation and functions of the Nuendo DD 8 can be
found on the next pages (Tour de Nuendo DD 8).

NUENDO DD 8
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ENGLISH
FortransmissionofthedigitalsignalsintoacomputerwithPCI-bus,we
recommend Steinberg's digital cards of the ST 24/96 and Nuendo 96/
52 series. These high-quality digital interface cards are available with
driversfor all common operatingsystemsandhavethehighest reputa-
tion world-wide.
5.1 Tour de Nuendo DD 8
Joinusforasmall'tourdeNuendoDD8',startingon the left side at the
AESto ADAT/TDIF converter. Configurationstarts withchoosing thein-
putsignal(AES,ADATorTDIF).Thestateofthedigitalinputsignalatthe
4XLR sockets is displayedby 16LEDs. Shownare lock (proXLR socket,
includingSyncCheck), Emphasis and thelevel ofthe audiosignal.
SRCactivatesaHi-End8-channelSampleRateConverter.Itisespecially
useful when sources cannot be synced or the output signal shall have
another sampling frequency.
Steinberg's intelligent clock control (ICC) offers extensive and profes-
sionalmeans thatarenot easilymet.To startwith,theclock sourcecan
be set to Internal (crystal), External (BNC word clock) and Input, while
Input lets you select between AES, ADAT or TDIF. The INT(ernal) clock
rates are 44.1 and 48kHz, and 88.2 and 96kHz after activating the DS
mode. After activating SRC, any AES signal from 32 to 96kHz can be
convertedto44.1,48, 88.2or96kHz. Lockstateand clocksynchronicity
are being displayed by the state of each LED (flashing or constantly lit).

NUENDO DD 8
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TheADAT/TDIF to AES section is layedoutinasimilarway. After choos-
ing the input signal (AES, ADAT or TDIF), the clock source and the sam-
pling rate, there is a field with 16 LEDs for displaying the output state.
An Emphasis bit at the TDIF input will be automatically set and indi-
cated for the AES out. The lock state of the input signals is being dis-
played at the Input selector by flashing LEDs. The sync LEDs show the
synchronicity between both ADAT or TDIF inputs, as in double speed
mode (DS) 2 I/Os are active (4 channels each). The AES output signal
canalsobesettoConsumersubcode.Thefirstoutput(channel1/2)can
optionally be output optically (via TOSLINK) using the ADAT AUX port.
The unit always sends its output signal to ADAT and TDIF simultane-
ously. Additionally when operating at no higher than 48 kHz both
ADAT outputs and TDIF interfaces get the same signal. Thus the distri-
bution capability is doubled to 2 x ADAT and 2 x TDIF. Thanks to the
possibility to freely select between inputs, all attached devices can
send signals to each other without the need to rearrange the cabling
between them.

NUENDO DD 8
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ENGLISH
6. The AES to ADAT/TDIF Converter
6.1 General
The Nuendo DD 8'S functional unit, which will be called 'left part' fur-
ther on, is an 8-channel format converter from AES/EBU to ADAT/TDIF,
with the output signal being transmitted both at the ADAT and TDIF
ports in parallel. As long as the device is not working in DS mode (Dou-
ble Speed), the output signal is even present at both ADAT and TDIF
ports (MAIN/AUX). Therefore the Nuendo DD 8 can pass on a 4 x 2
channel AES/EBU input signal to up to two ADAT and TDIF devices at
the same time (splitter 1 to 4). If AES is chosen as source in the right
part, there are the four AES/EBU outputs as well.
The four AES/EBU inputs process Double Speed (up to 96 kHz) and
Double Wire (up to 48 kHz) automatically. Excessive status displays
(Lock, SyncCheck, Emphasis, Level) help to avoid wrong configuration
and wrong clock setup.
A switchable high-end 8-channel sample rate converter can both con-
vert the sample rate and decouple the AES/EBU inputs.
6.2 Inputs
At the rear side of the
Nuendo DD 8 there are
fourXLRsocketsforthe
AES/EBU inputs. Every
input is transformer-
balanced and ground-
free. Channel status
and copy protection are being ignored. Thanks to a highly sensitive in-
put stage, also SPDIF signals can be processed using a simple cable
adapter (Phono/XLR).
Toachieve this, pins 2and3ofan XLR plug arebeingconnectedtothe
two contacts of a Phono plug. The ground shield of the cable is only
connected to pin 1 of the XLR plug.

NUENDO DD 8
English–14
The inputs can be used in any combination, e. g. it is sufficient to con-
nect an input signal only to input 3. In slave mode, this input is auto-
maticallybeingusedasclocksource.Ifmorethanonesignalispresent,
the one furthest left is being used as clock source, i. e. the active input
with the lowest number.
Theinputsarebeingcopiedtothe8channelADAT/TDIFformatsinlog-
ical order:
If an input sample rate higher than 56 kHz is detected at the AES/EBU
input, the DS LED lights up and the left part automatically switches to
DS mode, using the following channel distribution:
If a signal in Double Wire format is present at the input, technically no
special processing is activated. There is no need for processing, be-
causethe outputsignalswill beinSampleSplit format(S/MUX,Double
Line) right away.
6.3 Input State Display
Theinput stateisdisplayed with16LEDs. Everyinputhasits ownLOCK
LED. However a missing or invalid input signal is indicated by slow
flashing of the SOURCE LED. As soon as a valid input signal is present
the four LOCK LEDs will react per input. If ADAT or TDIF are chosen as
input source (Copy Mode), all four LOCK and Emphasis LEDs show the
same information. In DS mode, both two and two LEDs show the state
of the MAIN (1/2) and the AUX (3/4) inputs.
AES/EBU Input 1 2 3 4
ADAT/TDIF MAIN+AUX 1/2 3/4 5/6 7/8
AES/EBU 1L 1R 2L 2R 3L 3R 4L 4R
ADAT/
TDIF 1/2 MAIN 3/4 MAIN 5/6 MAIN 7/8 MAIN 1/2 AUX 3/4 AUX 5/6 AUX 7/8 AUX

NUENDO DD 8
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ENGLISH
If a valid input signal is applied, SyncCheck is automatically active.
When more than one input signal is present, the input with the lowest
number serves as reference. If the AES input is not chosen as clock
source,SyncChecktakesthechosenclockasreferenceandcomparesit
with the input clocks. Inputs which are not synchronous are shown by
quick flashing of the corresponding LOCK LED.
AES/EBU,S/PDIF and TDIFcancontainan Emphasis information.Audio
signalswith Emphasis have a stronghigh-frequency boost andthus re-
quire a high-frequency attenuation on playback. If one of the inputs
detectsEmphasis, this information isbeing setat theTDIFoutput (and
beingtransmittedcorrectlytoaDTRSmachine).Thealertingredcolour
of the Emphasis LEDs has another reason:
❐ Emphasis is not available within the ADAT standard! This information is
thus neither passed on to the ADAT output, nor taken into account later
on for acoustic transmission!
Each channel's audio level is shown by a level LED. The green LED be-
comes active from -90 dBFS and above, a higher level yields brighter
light.Thusonlyone LEDisnecessarytosee ifthereisanaudio signalor
digital zero, only noise floor or a useful signal.
6.4 Sample Rate Conversion
EachAES/EBU input has its own sample rate converter (SRC). An SRC al-
lows for a conversion of the sampling rate in real-time. The 24 bit SRCs
used in the Nuendo DD 8 work virtually without loss, i. e. there are no
audible artefacts or noise signals. The SRC works so well that we could
recommendtoleaveitswitchedonallthetime,andthuseliminateany
clock problem in the first place.
TheNuendoDD8'sSRCyieldsamaximumconversionratioof3:1or1:3.
96 kHz can be converted to any sample rate down to 32 kHz, 32 kHz to
any rate up to 96 kHz.
Iftheinternalclockisbeingused,theSRCworksasaperfectjitterkiller.
But the Nuendo DD 8 allows for any source as clock reference. With
othersettings than INT, thedevice isslave asusual andthe jitterof the
output signal thus depending on the jitter of the clock source.

NUENDO DD 8
English–16
AnSRC is not onlybeing usedforconversion of sample ratesandjitter
suppression,itisespeciallyusefulfortheso-calledclockdecoupling.By
meansof an SRC, anydevice whichcan'tbe synchronized (CD-Player,
consumerDAT etc.) can beused withinthesystem as if itwassynchro-
nizable.The SRC decouples anyinput clocksandsets the output clock
tothe common reference (nomatter whichone),and thus allows for
bringingtogethervariousclocksourceswithoutanyclicksordrop-outs.
Furtherinformationonsamplerateconversioncanbefoundinchapter
11, Technical Background.
6.5 Outputs ADAT Optical/TDIF
The Nuendo DD 8 provides two digital outputs, both in ADAT optical
and TDIF-1 format. In normal operation only the MAIN outputs are
used. When using more than the first 4 channels at activated DS (Dou-
ble Speed), the AUX outputs also have to be used.
TDIF and ADAT optical outputs always operate simultaneously and
carry the same audio data. As long as DS isn't activated MAIN and AUX
alsooperate simultaneouslyandcarrythe same audiodata.With this it
is possible to distribute the output signal to two devices of the same
format. When using all connectors the Nuendo DD 8 can feed up to 4
devices (2 x ADAT, 2 x TDIF).
The ADAT optical outputs of the Nuendo DD 8 are fully compatible to
all ADAT optical inputs. A usual TOSLINK cable is sufficient for connec-
tion.
ADAT Main
Interface for the first or only device receiving an ADAT signal from the
Nuendo DD 8. Carries the channels 1 to 8. When sending a Double
Speed signal, this port carries the channels 1 to 4.
ADAT AUX
Copy of the data at the MAIN output. When sending a Double Speed
signal, this port carries the channels 5 to 8. When AES STATE OPT is se-
lected, ADAT AUX is used from the right part of the Nuendo DD 8 to
send channels 1/2 in SPDIF format

NUENDO DD 8
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ENGLISH
The TDIF-1 connectors of the Nuendo DD 8 are fully compatible to all
deviceswith such an interface,for exampleDA-38 andDA-88. Thecon-
nection is done through a special TDIF cable, available at your local
dealer (Tascam part number PW-88D).
TDIF Main
Interface for the first or only device with a TDIF-1 interface. Carries the
channels1to8.WhentransmittingaDoubleSpeedsignal,thisportcar-
ries the channels 1 to 4.
TDIF AUX
CopyofthedataattheMAINinterface.Carriesthechannels5to8inBit
Split or Double Speed mode.
General tips for TDIF operation
TDIF and word clock
WhentheNuendoDD8isslave,noadditionalwordclockconnectionis
necessary. In case DA88 and/or DA38 are slave, the word clock output
oftheNuendoDD8hastobe connectedtothewordclockinputofthe
first (master) recorder. When using more than one recorder, a special
sync cable (Tascam part number PW-88S) is needed.
Emphasis
TheAES/EBUandTDIFinterfaceoftheNuendoDD8supportEmphasis.
PleasenotethatanEmphasisindicationwillnotbestoredorprocessed
on the sound when doing digital transfers between AES/EBU or TDIF
and ADAT, because the ADAT standard does not include Emphasis.
6.6 Input ADAT/TDIF (Copy Mode)
Bymeans of the SOURCEbutton,ADATandTDIF are available assignal
sources in the left part as well. Thus the Nuendo DD 8 turns into a
unique ADAT to TDIF and TDIF to ADAT converter, a digital patch bay
andsignal distributor. These two source formatsarenotifiedwithayel-
low LED, after all they are the main inputs for the right part, i. e. the
ADAT/TDIFtoAES/EBUconverter,forwhichtheyarestillavailableasin-
puts. Please refer to the block diagram on page 29.

NUENDO DD 8
English–18
In this operating mode, which is called CopyMode due to its identical
source and destination format, the input signal can be forwarded to a
same format without having to change cables externally. The mathe-
matical equation is
•(2 x ADAT In or 2 x TDIF In) to (2 x ADAT Out plus 2 x TDIF Out)
Inother terms: The ADAT orTDIF inputsignal appears inparallel atthe
ADAT and TDIF outputs. And the MAIN and AUX ports can be used to
pass through / distribute up to 16 channels at the same time.
In addition to the already described feature of signal distribution, the
Nuendo DD 8 thus also works as a patch bay, because the ADAT and
TDIF devices connected to the Nuendo DD 8 can exchange data di-
rectlyamong each other without re-connectingofcables.AnADATop-
tical or TDIF input signal is being output at two ADAT optical and two
TDIF ports at the same time.
Pleasetakealook at the block diagram on page 29.It shows the whole
signalrouting inside theNuendo DD8 ina clear way, alsofor this Copy
Mode .
❐ The sample rate converter is a part of the AES/EBU inputs, so when select-
ing ADAT/TDIF it is still only available to the AES inputs. The AES inputs
(includingtheSRC)canalsobeusedbytherightpartoftheNuendoDD8if
necessary.
IftheCopyModeisactive,theDSmodecanbeactivatedmanuallywith
thebutton for thesampling frequency.There isa reason for this:nor-
mally,the8channelinputsignaloftheADATorTDIFMAINinputiscop-
iedtobothoutputsMAIN/AUX(splitter).ButifaSampleSplit,S/MUXor
DoubleWiresignalispresentattheADATorTDIFinput,alsothedataof
theAUX input hasto bepassed onto the AUX outputfor fulltransmis-
sionof8 channels. In other terms: 16channels are being forwarded1:1.
❐ In order to make use of all 16 TDIF and ADAT channels in Copy Mode, DS
has to be activated, even if it is only Single Speed signals.
The level display then works like in Sample Split operation. Two chan-
nels are being displayed on one LED (1+2, 3+4 etc.).

NUENDO DD 8
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ENGLISH
Emphasis
TheAES/EBUandTDIFinterfaceoftheNuendoDD8supportEmphasis.
PleasenotethatanEmphasisindicationwillnotbestoredorprocessed
on the sound when doing digital transfers between AES/EBU or TDIF
and ADAT, because the ADAT standard does not include Emphasis.
7. The ADAT/TDIF to AES/EBU Converter
7.1 General
The Nuendo DD 8's functional unit called 'right part' further on, is an 8-
channel format converter from ADAT/TDIF to AES/EBU.
Because the DoubleWire and SampleSplit (S/MUX) formats don't con-
tain a coding, the Nuendo DD 8 cannot distinguish them from normal
(44.1/48 kHz) material. Whether the AES/EBU outputs are supposed to
work in Single (44.1/48 kHz) or Double Speed (88.2/96 kHz) has to be
set explicitly by the user. This happens in the clock section with the
sample frequency button, activating DS.
Complete status displays (Lock, SyncCheck, Emphasis, Level) help to
avoid wrong configuration and wrong clock setup.
7.2 Inputs
TheNuendoDD8providestwodigitalinputs,bothinADATopticaland
TDIF-1 format. The key SOURCE sets the desired input active.
In normal operation only the MAIN inputs are used. When using more
than the first 4 channels at activated DS (Double Speed), the AUX in-
puts also have to be used.
TheinputdataispassedontothefourAES/EBUoutputsinlogicalorder:
ADAT/TDIF 1 2 3 4 5 6 7 8
AES/EBU 1L 1R 2L 2R 3L 3R 4L 4R

NUENDO DD 8
English–20
If the input data is encoded with Sample Split, S/MUX or Double Line,
the AES output has to be set to DS mode manually. Every input con-
tains the information of only 4 channels, for full 8 channels MAIN and
AUX have to be used. 16 input channels 44.1/48 kHz are being con-
verted to 8 output channels 88.2/96 kHz. The channels are being dis-
tributed in the following manner:
The ADAT optical inputs of the Nuendo DD 8 are fully compatible with
all ADAT optical outputs. Steinberg's unsurpassed Bitclock PLL pre-
vents clicks and drop outs even in extreme varipitch operation, and
guarantees a fast and low jitter lock to the digital input signal. A usual
TOSLINK cable is sufficient for connection.
ADAT Main
Interface for the first or only device sending an ADAT signal to the Nu-
endoDD8.Carriesthechannels1to8.WhenreceivingaDoubleSpeed
signal, this input carries the channels 1 to 4.
ADAT AUX
Interface for the second device sending a Double Speed signal to the
Nuendo DD 8. Carries the channels 5 to 8. Receives channels 9-16 in
Copy Mode.
TheTDIF-1connectorsoftheNuendoDD8arefullycompatiblewithall
devicesoffering such an interface,forexampleDA-38and DA-88. A SD-
PLL ensures best playback sound quality and reliable operation. Sync-
CheckverifiessynchronousoperationwhenusingbothTDIF ports.The
connectionis donethroughaspecial TDIF cable,availableatyour local
dealer (Tascam part number PW-88D).
TDIF Main
Interface for the first or only device with a TDIF-1 interface. Carries the
channels1to8.WhentransmittingaDoubleSpeedsignal,thisportcar-
ries the channels 1 to 4.
ADAT/TDIF
MAIN+AUX 1/2 MAIN 3/4 MAIN 5/6 MAIN 7/8 MAIN 1/2 AUX 3/4 AUX 5/6 AUX 7/8 AUX
AES/EBU 1L 1R 2L 2R 3L 3R 4L 4R