Bryston BUC-1 User manual

BUC-1
DIGITAL-TO DIGITAL
CONVERTER

IMPORTANT SAFETY INSTRUCTIONS
The lightning flash with arrowhead symbol within an equilateral triangle, is intended to alert the user to the presence of un-insulated “danger-
ous voltage “ within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance
(servicing) instructions in the literature accompanying the product.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A
grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the pro-
vided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the
apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is
used use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus when moving it & during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such
as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has been dropped.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR SPLASHING AND ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, ARE
PLACED ON THE EQUIPMENT.
TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE AC MAINS, DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC
RECEPTACLE.
THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE.
UNPLUG MAINS CORD DURING TRANSPORTATION.
BRYSTON LIMITED WARRANTY
Bryston analog audio circuits are warranted to be free from manufacturing defects for twenty (20) years from the original date of manufacture. The
warranty includes parts and labour.
Bryston Digital circuits and cables are warranted for five years from the original date of manufacture. The warranty includes parts and labour.
Bryston products having motorized moving parts, excluding motorized volume controls, are warranted for three years from the original date of manu-
facture. The warranty includes parts and labour.
Bryston will remedy the problem by repair or replacement, as we deem necessary, to restore the product to full performance. Bryston will pay only
return shipping costs for the full length of the specific products warranty.
In the event of a defect or malfunction, contact Bryston’s repair centers for return authorization. Products must be returned using original packaging
material only. Packing material may be purchased from Bryston if necessary. This warranty is considered void if the defect, malfunction or failure of the
product or any component part was caused by damage (not resulting from a defect or malfunction) or abuse while in the possession of the customer.
Tampering by persons other than factory authorized service personnel or failure to fully comply with Bryston operating instructions voids the warranty.
This warranty gives you specific legal rights and you may also have other rights which may vary from province to province and country to country.
As of 2006-02-22 Bryston will only warranty Bryston products purchased through authorized Bryston dealers. Bryston products with a date code
of 0608 or higher (date code format is “yyww”, where “yy” is the two least significant digits of the year and “ww” is the week of the year) must be
accompanied by a copy of the bill-of-sale from a Bryston authorized dealer to qualify for warranty service. The warranty is transferable from the original
owner to a subsequent owner as long as a copy of the bill-of-sale from the original authorized Bryston dealer accompanies the re-sale. The copy of the
bill of sale to any subsequent owner need ONLY include the Name of the Bryston Authorized Dealer and the Model and Serial number of the Bryston
product The warranty will only be honored in the country of the original purchase unless otherwise pre-authorized by Bryston.
Postal address: P.O. BOX 2170, Stn. Main
PETERBOROUGH, ONTARIO
CANADA K9J 7Y4
Courier address: 677 NEAL DRIVE
PETERBOROUGH, ONTARIO
CANADA K9J 6X7
PHONE: [phone]
FAX: [phone]
E-mail: [e-mail]
79 COVENTRY ST., Suite 5
NEWPORT, VERMONT
U.S.A. 05855-2100
PHONE: [phone]
FAX: [phone]
E-mail: [e-mail]
BRYSTON SERVICE in CANADA:BRYSTON SERVICE in the USA:
contact your local distributor or
CHECK OUR WEB SITE: www.bryston.ca
E-MAIL BRYSTON DIRECTLY: [e-mail]
FAX BRYSTON DIRECTLY: 01-705-742-0882
PHONE BRYSTON DIRECTLY: 01-705-742-5325
BRYSTON SERVICE outside Canada and the USA:
SAFETY_INSTRUCTIONS_WARRANTY_CONTACT_SHEET_20120816

TABLE of CONTENTS
Safety Instructions, Warranty and Contact Information .................Opposite
General Information ..................................................................... Page 1
Features
Power Considerations
Fuses and Electrical Safety
Front Panel
Power Switch and LED Indicator
Sample Rate LED Array
Rear Panel .................................................................................... Page 1-2
USB Input
BNC & Phono (co-ax) Outputs
AES/EBU Output
Trigger Input (remote power On/Off)
Data Plate
Mains IEC power inlet
Dimensions & Specifications
USB Driver ..................................................................................................................... Page 3-4
Installation of USB Audio Class 2 Driver Installation
BUC-1 Digital-to-Digital Converter

FEATURES
The Bryston BUC-1 is a state of the art USB digital-
to-digital converter with a USB input and three
different digital outputs; BNC, Co-axial & 3 pin
XLR(male). The BUC-1 supplies clocking signals to
the USB source device (e.g. personal computer) to
ensure a proper synchronized data stream
Features of the BUC-1:
•USBAudioClass2input(192KHz/24Bitasynchronous)
•USBdriverssuppliedonflashmemory(thumbdrive)
•Linearpowersupply
•Samplerates:44.1KHz,48KHz,88.2KHz,96KHz,
176.4KHz,192KHz
•TransformercoupledSPDIFandAES/EBUDigitaloutputs.
•SPDIFOutput(viaCoAxialRCA/phonojackandBNC
connector)
•RemoteOn/OffControlTriggerinput,12Volt
•CompatiblewithCDDrives,SoundCards,Computers,
Music Servers.
•CosmeticallymatchesC-SeriesBP26,MPS2,etc
POWER CONSIDERATIONS
TheBUC-1hasathreepronggroundedIEC60320
power inlet. Make sure that the voltage source you
plug an interconnecting line cord to is the same as
thatstatedonthe“dataplate”label.
Also,youcanreducethepossibilityoflocalground
loops which could cause hum or noise in the system
bypluggingitslinecordintothesamewalloutlet
next to the power amp, pre-amp and other equip-
ment in your system.
Besidesthefrontpanelpush-on/push-offpower
switch,thereisalsoaremotetrigger(ON/OFF)
connector(a2conductormini3.5mmphonejack)
whichwhensuppliedwith12v@50mAorgreater
will turn on the BUC-1).
AgreenLEDlocatedabovethefrontpanelpower
switch will light when the unit is powered on.
INTERNAL FUSE
The BUC-1 contains a single fuse located inside the
unit.IFitshouldbecomenecessarytoreplacethis
fuse we recommend that you seek the assistance of
qualified service personnel.
Thefuseisa5x20mmglass
type located at the rear
of the unit near the power
inlet.
To remove the top cover to access the internal fuse
aTorx-8screwdriverisrequired.Removeallexter-
nal screws secruing the top cover and slide the top
covertowardstherearoftheunitbyapproximately
1/4inchbeforeliftingitofftheunit.Afterre-
placing the fuse, replace and secure the top cover
beforereconnectingthepowercord.
CAUTION: Whenever the BUC-1 is connected to a
power source hazardous live voltages are present in
theBUC-1.Itisessential,therefore,beforeopening
uptheBUC-1,thatthepowercordbedisconnected
fromitentirely.Replaceadamagedorblownfuse
withthetypeandvalueindicatedonPCBorthe
fuselabelonthePCB.
FRONT PANEL:
POWER SWITCH: There are no switches or controls
ontheBUC-1besidesthepushbuttonpowerON/
OFFswitch.IfthefrontpanelLEDpowerindicator
isonyetthepowerswitchisintheout(Off)posi-
tion then the remote trigger is controlling the unit,
keepingitturnedON.
SAMPLE RATE LED ARRAY: EightLEDsarrangedin2
columnsX4rows.Indicates the sample rate of the
USB input and whether or not it is locked.
REAR PANEL:
BNC & PHONO OUTPUTS: TherearetwoSPDIF
outputsintendedforconnectorsusingco-axialwire:

aBNCmaleandanPhono(RCA)femaleconnector
labelled“CO-AX”.
AES/EBU OUTPUT:ThereisoneAES/EBU(AudioEn-
gineeringSociety/EuropeanBroadcastingUnion)fully
balancedinputusinga3pinXLRfemaleconnector
for a twisted pair wire connection of a digital audio
signal.
USB INPUT: ThereisasingleUSBAudioClass2input
(24bit/192KHz).Newdriversmayhavetobein-
stalled in your computer to use this port. See pages
3&4ofthismanualformoreinformation.
WhenconnectingtoaPCitmaybenecessaryto
direct the digital audio stream from your computer
through its USB port to the BUC-1. To do so, click on
yourPC’sSTART menu then select CONTROL PANEL >
SOUNDS & AUDIO DEVICES >AUDIO and ensure that
the Bryston BUC-1 is selected
N.B. NodriversarerequiredforMACOS.Seepage3
for more information
REMOTE TRIGGER INPUT:The BUC-1 is equipped with
aremotetrigger(ON/OFF)connector(a2conductor
mini3.5mmphonejack)whichwhensuppliedwith
12VDC@50mAorgreaterwillturnontheBUC-1.
The remote trigger operates a relay which is in paral-
lelwiththepushbuttonpowerswitch(frontpanel)
andthisevenisthefrontpanelswitchisintheOFF
position(out)theunitmaystillbeoperational.
TheGreenLEDwilllighttheunitisswitchedonlo-
cally via the front panel switch or remotely via the
remote trigger. Note that the Trigger input is polarity
insensitive, i.e. it does not matter which terminal is
positive and which is netative.
DATA PLATE: Thislabellocatedontherearpanel
providestheunitsexactmodelnumber,serialnum-
ber,electricalratinganddateofmanufacture.Do
not remove. The date code indicates then date of
manufacture where formated as YYWW where “YY”
is the two least significant digits of the year and WW
is the week of the year.
IEC POWER INLET: UseonlyapprovedIEC-320power
cords with C13 type connectors to mate with the
BDA-2’sIEC-320-C14powerinlet.
DIMENSIONS &
SPECIFICATIONS
POWER CONSUMPTION:
 5.0Wattsmax.
 400mWattsstandby
WEIGHT:
 2.05KG(withoutpackagingorpowercord)
EXTERNAL DIMENSIONS (inches/metric):
8.3”DeepX5.7”WideX2.55”High
 211mmDeepX145mmWideX65mmHigh

BDA2 USB Driver Installation
MAC OS X Installation:
MAC OS 10.6.4 and above, natively supports USB Audio class 2, and no additional drivers
are required.
Windows 7 Installation:
To use the Bryston BDA2 as a USB sound device, the Windows operating system requires
additional USB drivers to be installed.
These drivers can be found on the Bryston USB key that is included in the box.
Connect the Bryston BDA2 to your computer.
Plug the Bryston USB key into a USB port on your computer.
In windows explorer, navigate to the Bryston USB key (BRYSTON_USB).
Now run the file called “setup.exe”. The following window will open:
Click the “Next >” button.
Install the Bryston USB Audio drivers in the default folder, or change the installation folder if
required. Click the “Install” button.
CONTINUED ON NEXT PAGE ►
USB AUDIO CLASS 2 DRIVER INSTALLATION

A Windows security warning will pop up twice.
The USB drivers are safe to use,so select: “Install this driver software anyway”
The setup wizard will copy all the necessary files and preinstall the drivers.
After successful installation, the following window will open.
Click the “Next >” button.
The setup wizard is finished and Windows will now install the Bryston USB audio drivers.
The Bryston BDA2 D/A is now ready to use as a sound device in Windows.

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