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Safety Notices
IMPORTANT SAFETY NOTICE
This unit complies with the safety standard EN60065. The unit shall not be exposed to dripping or splashing and no objects filled with liquids,
such as coffee cups, shall be placed on the equipment. To ensure safe operation and to guard against potential shock hazard or risk of fire, the |
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following must be observed: |
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o Ensure that your mains supply is in the correct range for the input power requirement of the unit. |
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o Ensure fuses fitted are the correct rating and type as marked on the unit. |
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o The unit must be earthed by connecting to a correctly wired and earthed power outlet. |
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o The power cord supplied with this unit must be wired as follows: |
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Live—Brown |
Neutral—Blue |
Earth—Green/Yellow |
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IMPORTANT – NOTE DE SECURITE
Ce materiel est conforme à la norme EN60065. Ne pas exposer cet appareil aux éclaboussures ou aux gouttes de liquide. Ne pas poser d'objets remplis de liquide, tels que des tasses de café, sur l'appareil. Pour vous assurer d'un fonctionnement sans danger et de prévenir
tout choc électrique ou tout risque d'incendie, veillez à observer les recommandations suivantes.
o Le selecteur de tension doit être placé sur la valeur correspondante à votre alimentation réseau. |
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o Les fusibles doivent correspondre à la valeur indiquée sur le materiel. |
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o Le materiel doit être correctement relié à la terre. |
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o Le cordon secteur livré avec le materiel doit être cablé de la manière suivante: |
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Phase—Brun |
Neutre—Bleu |
Terre—Vert/Jaune |
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WICHTIGER SICHERHEITSHINWEIS
Dieses Gerät entspricht der Sicherheitsnorm EN60065. Das Gerät darf nicht mit Füssigkeiten (Spritzwasser usw.) in Berührung kommen; stellen Sie keine Gefäße, z.B. Kaffeetassen, auf das Gerät. Für das sichere Funktionieren des Gerätes und zur Unfallverhütung (elektrischer Schlag, Feuer) sind die folgenden Regeln unbedingt einzuhalten:
o Der Spannungswähler muß auf Ihre Netzspannung eingestellt sein.
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o Die Sicherungen müssen in Typ und Stromwert mit den Angaben auf dem Gerät übereinstimmen. o Die Erdung des Gerätes muß über eine geerdete Steckdose gewährleistet sein.
o Das mitgelieferte Netzkabel muß wie folgt verdrahtet werden:
Phase—braun Nulleiter—blau Erde—grün/gelb
NORME DI SICUREZZA – IMPORTANTE
Questa apparecchiatura è stata costruita in accordo alle norme di sicurezza EN60065. Il prodotto non deve essere sottoposto a schizzi, spruzzi e gocciolamenti, e nessun tipo di oggetto riempito con liquidi, come ad esempio tazze di caffè, deve essere appoggiato sul dispositivo. Per una perfetta sicurezza ed al fine di evitare eventuali rischi di scossa êlettrica o d'incendio vanno osservate le seguenti misure di sicurezza:
o Assicurarsi che il selettore di cambio tensione sia posizionato sul valore corretto.
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Assicurarsi che la portata ed il tipo di fusibili siano quelli prescritti dalla casa costruttrice. |
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o L'apparecchiatura deve avere un collegamento di messa a terra ben eseguito; anche la connessione rete deve |
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avere un collegamento a terra. |
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Il cavo di alimentazione a corredo dell'apparecchiatura deve essere collegato come segue: |
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Filo tensione—Marrone |
Neutro—Blu |
Massa—Verde/Giallo |
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AVISO IMPORTANTE DE SEGURIDAD
Esta unidad cumple con la norma de seguridad EN60065. La unidad no debe ser expuesta a goteos o salpicaduras y no deben colocarse sobre el
equipo recipientes con liquidos, como tazas de cafe. Para asegurarse un funcionamiento seguro y prevenir cualquier posible peligro de descarga o |
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riesgo de incendio, se han de observar las siguientes precauciones: |
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o Asegúrese que el selector de tensión esté ajustado a la tensión correcta para su alimentación. |
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o Asegúrese que los fusibles colocados son del tipo y valor correctos, tal como se marca en la unidad. |
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o La unidad debe ser puesta a tierra, conectándola a un conector de red correctamente cableado y puesto a tierra. |
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o El cable de red suministrado con esta unidad, debe ser cableado como sigue: |
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Vivo—Marrón |
Neutro—Azul |
Tierra—Verde/Amarillo |
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VIKTIGA SÄKERHETSÅTGÄRDER!
Denna enhet uppfyller säkerhetsstandard EN60065. Enheten får ej utsättas för yttre åverkan samt föremål innehållande vätska, såsom
kaffemuggar, får ej placeras på utrustningen." För att garantera säkerheten och gardera mot eventuell elchock eller brandrisk, måste följande |
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observeras: |
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o Kontrollera att spänningsväljaren är inställd på korrekt nätspänning. |
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o Konrollera att säkringarna är av rätt typ och för rätt strömstyrka så som anvisningarna på enheten föreskriver. |
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o Enheten måste vara jordad genom anslutning till ett korrekt kopplat och jordat el-uttag. |
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o El-sladden som medföljer denna enhet måste kopplas enligt foljande: |
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Fas—Brun |
Neutral—Blå |
Jord—Grön/Gul |
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BELANGRIJK VEILIGHEIDS-VOORSCHRIFT:
Deze unit voldoet aan de EN60065 veiligheids-standaards. Dit apparaat mag niet worden blootgesteld aan vocht. Vanwege het risico dat er druppels in het apparaat vallen, dient u er geen vloeistoffen in bekers op te plaatsen. Voor een veilig gebruik en om het gevaar van electrische schokken en het risico van brand te vermijden, dienen de volgende regels in acht te worden genomen:
o Controleer of de spanningscaroussel op het juiste Voltage staat.
o Gebruik alleen zekeringen van de aangegeven typen en waarden. NL o Aansluiting van de unit alleen aan een geaarde wandcontactdoos.
o De netkabel die met de unit wordt geleverd, moet als volgt worden aangesloten:
Fase—Bruin Nul—Blauw Aarde—Groen/Geel
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DOLBY 363
NOISE REDUCTION UNIT
DOLBY 363 SR/A NOISE REDUCTION UNIT
The Dolby Model 363 provides two channels of noise reduction switchable
between Dolby SR (Spectral Recording) and Dolby A-type.The economical 1-U high unit is intended for all kinds of audio facilities: music recording,video postproduction, broadcast,multimedia,and film.
Record/playback changeover of each channel can be controlled individually from the front panel,a tape recorder,or a remote control,allowing a single Model 363 to serve for stereo recording applications.Front-panel toggle switches select Dolby SR,Dolby A-type,or no processing.A setup button and four-element LED calibration displays allow quick alignment using internally generated Dolby tone for A-type or Dolby noise for SR. As with all other implementations of Dolby SR,the Model 363 features Auto Compare for verifying the performance of the audio system.
The Model 363 is also ideal for applications requiring dedicated encode or decode operation.A pair of 363 units can be used for simultaneous record and playback on twochannel tape recorders,or for transmission
systems where the encoder and decoder are physically separated.In single-channel recording applications,a single unit can be used for simultaneous record and playback.
The Model 363 incorporates electronically balanced transformerless input and output circuits.Independent level adjustments for the record and playback signal paths allow accurate matching of existing line levels.A Check Tape switch allows monitoring of either the line-in signal or the encoded tape while recording.Bypass buttons make it possible to remove either or both channels from the entire audio system for studio alignment.
The Model 363 is normally supplied with two Cat.No.300 modules,which contain both Dolby SR and Dolby A-type processing.A Dolby SR-only version using Cat.No.350 modules is also available.Note: Cat.No.22 and Cat.No.280 modules cannot be used in the Model 363.
For multichannel applications,the Dolby SRP Series is available to provide up to 24 channels of Dolby SR noise reduction.
100 Potrero Avenue
San Francisco,CA 94103-4813 Telephone 415-558-0200
Fax 415-863-1373 info@dolby.com
Wootton Bassett
Wiltshire SN4 8QJ,England Telephone (44) 1793-842100 Fax (44) 1793-842101 info@dolby.co.uk
www.dolby.com
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DOLBY NOISE REDUCTION
Dolby noise reduction is a family of signal processes that reduce the noise inherent in analog recording media, without affecting the sound being recorded. While they differ in performance and details of operation, all Dolby NR systems are complementary processes that first encode the music when it is recorded, then decode it when it is played back. They also treat soft signals separately from loud ones, and vary the NR action with frequency to avoid the side effects typical of other systems.
Dolby A-type noise reduction, introduced in 1965, was originally intended for use by professional recording studios to make quieter master tape recordings. In the early 1970s its use was extended to film studios and motion picture release prints to make films sound better.
Dolby SR (spectral recording), introduced in 1986, was designed not only to provide more noise reduction than A-type, but also to enable analog master recordings that equal or surpass 16-bit digital recordings with respect to overall dynamic range. Today, analog with Dolby SR is still a preferred format for some musicians, producers, and recording and mastering facilities, and is the standard format for the analog soundtracks of virtually all feature films.
363 SPECIFICATIONS
Frequency Responsel
20 Hz–20 kHz ± l dB encode/decode, at any level
Overall Distortion (THD)l
≤0.2% at Dolby level
Processor Headroom
+21 dB above Dolby level
Overall Dynamic Rangel
SR:
105 dB, clipping level to CCIR/ARM noise level 105 dB, clipping level to NAB A-weighted noise level; 2 95 dB, clipping level to unweighted noise level, 20 Hz–20 kHz3
A-type:
104 dB, clipping level to CCIR/ARM noise level
105 dB, clipping level to unweighted noise level,
20 Hz–20 kHz
Typical Obtainable Dynamic Range
SR: 90–95 dB; A-Type: 75–80 dB; typical at 38 cm/s (15ips) tape speed
Matching Between Units
±l dB at any level and any frequency, 20 Hz–20 kHz
Crosstalk
<–100 dB, 20 Hz–20 kHz processor off, or encode/decode
Signal Delay
6 µs for a single channel, 12 µs for overall encode/decode system
Analog Audio Inputs
(0 dBr = 0.775 VRMS)
XLR connectors, balanced, 20 kΩ; common mode rejection: >55 dB, 50 Hz–10 kHz; maximum input level: +27 dBr balanced, +21 dBr unbalanced; input line levels from –10 dBr to +10 dBr can be adjusted to give Dolby level
Built-in Dolby tone and Dolby noise generators for calibration and channel identification
Analog Audio Outputs
XLR connectors, balanced, 20Ω; output level balance: within 1 dB into symmetrical 600Ω load; output float4 better than –40 dB, 50 Hz–1 kHz; maximum signal level into 600Ω: +26 dBr balanced, +21 dBr unbalanced; output line levels in the range –10 dBr to +10 dBr can be adjusted to give Dolby level
Remote Control
9-pin male D-connector for individual-channel record/play changeover for remote control by the tape recorder; connector may be wired to allow remote-only or combined local and remote operation; changeover time: 3 ms maximum
15-pin female D connector for remote control of SR/Off/A in/out and Setup functions; also provides a remote status indication of A/SR and Auto Compare function
Front-Panel Controls and Indicators
Individual channel controls: A/OFF/SR—Selection of processing type
NORMAL/CHECK TAPE—Allows checking of the nondecoded signal from tape during recording or playback
RECORD/PLAY—Control of record/play switching BYPASS—Provides relay-controlled “hard” bypass of all circuitry
LEVEL CONTROLS—Four multi-turn level controls per channel for setting levels to and from
the console, and to and from the tape recorder SETUP—For use during alignment and calibration Calibration Display:
Four-LED display per channel for setting Dolby level
Dimensions and Weight
1-U Rackmount: 44 x 483 x 285 mm (1.75 x 19 x 10.2 inches); a further 65 mm (2.5 inches) required for standard XLR connectors
Net: 6.3 kg (14 lbs) including two Cat. No. 300 modules
Power Requirements
230 V version: 198–264 VAC, 50–60 Hz, 40 W; uses one 20 mm T250 mA fuse
Multi-voltage version: User selected 85–132 VAC, 50–60 Hz, 40 W; uses one 1.25-inch 500 mA slow-blow fuse, or 187–264 VAC, 50–60 Hz, 40 W, uses one 20 mm T250 mA fuse
Operating Conditions
Up to 40° C (104° F)
Regulatory Notices
US: This unit is UL listed.
Europe: The 230 Volt unit complies with the requirements of Low Voltage Directive 73/23/EEC and EMC Directive 89/336/EEC.
Warranty
One-year limited, parts and labor
DISCLAIMER OF WARRANTIES: Equipment manufactured by Dolby Laboratories is warranted against defects in materials and workmanship for a period of one year from the date of purchase. There are no other express or implied warranties and no warranty of merchantability or fitness for a particular purpose.
LIMITATION OF LIABILITY: It is understood and agreed that Dolby Laboratories’ liability whether in contract,in tort,under any warranty,in negligence or otherwise shall not exceed the cost of repair or replacement of the defective components and under no circumstances shall Dolby Laboratories be liable for incidental,special,direct,indirect or consequential damages (including but not limited to damage to software or recorded audio or visual material),or loss of use,revenue or profit even if Dolby Laboratories or its agents have been advised, orally or in writing, of the possibility of such damages.
All specifications apply with input and output controls set for Dolby level equal to +4 dBr = 1.23 VRMS, balanced source and load.
0 dBr is defined as 0.775 V without regard to impedance. 1Two units back-to-back, encode/decode
2Weighting filter supplemented by 25 kHz 4-pole lowpass filter to ensure that only audible noise is measured
3Average-responding or RMS meter, 4-pole filters
4Output float is the level across a balanced load relative to an interfering signal injected at one end of the load
Specifications subject to change without notice.
Dolby and the double-D symbol are trademarks of Dolby Laboratories. © 2000 Dolby Laboratories, Inc. S00/12485/13313
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