Electrovoice-Dx38-sp-sm维修电路原理图.pdf

Dx 38 24 BIT DIGITAL SOUND SYSTEM PROCESSOR SERVICE MANUAL RadioFans.CN 收音机爱 好者资料库 WARRANTY (Limited) Electro-Voice products are guaranteed against malfunction due to defects in materials or workmanship for a specified period, as noted in the individual product-line statement(s) below, or in the individual product data sheet or owners manual, beginning with the date of original purchase. If such malfunction occurs during the specified period, the product will be repaired or replaced (at our option) without charge. The product will be returned to the customer prepaid. Exclusions and Limitations: The Limited Warranty does not apply to: (a) exterior finish or appearance; (b) certain specific items described in the individual product-line statement(s) below, or in the individual product data sheet or owners manual; (c) Malfunction resulting from use or operation of the product other than as specified in the product data sheet or owners manual; (d): malfunction resulting from misuse or abuse of the product; or (e): malfunction occurring at any time after repairs have been made to the product by anyone other than Electro-Voice or any of its authorized service representatives. Obtaining Warranty Service: To obtain warranty service, a customer must deliver the product, prepaid, to Electro-Voice or any of its authorized service representatives together with proof of purchase of the product in the form of a bill of sale or receipted invoice. A list of authorized service representatives is available from Electro-Voice at 600 Cecil Street, Buchanan, MI 49107 (616-695-6831) and/or Electro-Voice West at 9130 Glenoaks Boulevard, Sun Valley, CA 91532 (213-875-1900). Incidental and Consequential Damages Excluded: Product repair or replacement and return to the customer are the only remedies provided to the customer. Electro-Voice shall not be liable for any incidental or consequential damages including, without limitation, injury to persons or property or loss of use. Some states do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you. Other Rights: This warranty gives you specific legal rights, and you may have other rights which vary from state to state. Electro-Voice Electronics are guaranteed against malfunction due to defects in materials or workmanship for a period of three (3) years from the date of original purchase. Additional details are included in the Uniform Limited Warranty Statement. Specifications subject to change without notice. 600 Cecil Street, Buchanan, Michigan 49107, Phone 616/695-6831, Fax: 616/695-1304 TELEX/EVI Audio Canada, 705 Progress Ave. Unit 46 Toronto, Onatario, M1H 2x1, Canada , Phone: 800/881-1685, Fax: 877/522-2242 TELEX Communications A.G., Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: 011-41/32-51-6833, Fax: 011-41/32-51-1221 EVI Audio Deutschland GmbH, Hirschberger Ring 45, D-94315, Straubing, Germany, Phone: 011-49/9421-7060, Fax: 011-49/9421-706265 EVI Audio France S.A., Parc de Courcerin-Allee Lech Walesa, Lognes, f-77185 Marne La Vallee, France, Phone: 011-33/1-6480-0090, Fax: 011-33/1-6006-5103 EVI Audio Japan Ltd., 2-5-60 Izumi, Suginami-ku, Tokyo, Japan 168, Phone: 011-81/3-3325-7900, Fax: 011-81/3-3325-7789 EVI Audio (Aust.) Pty., Unit 24, Block C, Slough Business Park, Slough Ave., Silverwater, N.S.W 2141, Australia, Phone 011-61/2-648-3455, Fax: 011-61/2-648-5585 EVI Audio (Hong Kong) Limited, Unit E plus internal summing of the inputs 1 and 2. Via matrix it is possible to assign the outputs to any input or to the sum of the inputs. It is further possible to establish the following configurations: Stereo or Dual 2-Way systems, 3-Way + Direct and 4-Way systems, each with Mono Sub-channel, but also full range systems. High and low-pass filters are provided for the frequency crossover functions in all operation modes. The selection includes Linkwitz-Ri- ley, Butterworth and Bessel type filters with switchable slopes between 6, 12, 18 and 24 dB/oct. A huge number of additional filters offers extremely flexible correction of the frequency response. Each input incorporates a 5-band equalizer, allowing to assign high and low-pass, high and low-shelving or parametric peak-dip filters to its individual filter sections. Next to the frequency crossover filters, four additional filters are employed in each output channel, which also can be set to work as high or low-pass, high or low-shelving filters, parametric peak-dip filters, or all-pass filters. Additional filtering is provided through 2. order high-passes for the realization of B-6 alignment, or special LPN-filters (Low-Pass Notch filters) for correcting the frequen- cy and phase responses of optimally vented woofer cabinets. Each channel additionally provides a delay, a polarity switch, a program- mable level control and a digital compressor / limiter while the master delays are located in the input channels. The user can choose between two operation modes: the “No Edit Mode” allows to simply select the required combination of loudspeaker systems from the factory preset program list. Afterwards, the appliance is optimally matched to the sound system and can be operated instantly. The “Full Edit Mode” on the other hand offers access to all parameters, allowing to freely program and store basically any setting. A total number of 80 memory addresses - 50 preset and 30 freely assignable user-programs - are available. Technische Informationen Architects and engineers specifications Dx 38 24 BIT DIGITAL SOUND SYSTEM PROCESSOR Weitere Merkmale sind: - FLASH Speicher fr Software und Preset Updates ber serielle Schnittstellen - PC Bedien- und Konfigurationssoftware unter Windows 95 / Windows 98 - MIDI-Schnittstelle standardig - RS-232, RS-485 Schnittstellen oder Umschaltkontakte optional - Grafik-Display mit 122 x 32 Dots, hintergrundbeleuchtet - Ein- und Ausgnge elektronisch symmetrisch in XLR - Trafosymmetrierung fr die Eingnge optional - Input / Output Pegelsteller, Output Mute Schalter, Kanal- Funktionsanzeigen SUB, LO, MID, HI - Input / Output Aussteueranzeigen, Kompressor- und Clip-LEDs RadioFans.CN 收音机爱 好者资料库 Within the Dx 38, AD/DA conversion is taken care of by linear 24-bit converters; where the AD-section employs 128 times oversampling, gain-ranging Sigma-Delta converters. The DA-section offers 128 times oversampling Sigma-Delta converters. The overall signal processing is performed by two 24-bit Motorola signal processors. DESCRIPTION Avec ses algorithmes de filtrage travaillant en 48 bits, ses convert- isseurs A/N et N/A 24 bits et sa gamme dynamique de 115 dB, le Dx 38 dfinit de nouveaux standards dans le domaine des contrleurs et processeurs numriques de haut-parleurs. Le Dx 38 est un processeur numrique de diffusion universel ; il est pourvu de 2 entres et 4 sorties, un circuit interne permettant de sommer les entres 1 et 2. Une matrice permet dassigner les sous-bandes du signal dentre stro (ou somm en mono) nimporte quelle(s) sortie(s). Dorigine, les confi- gurations suivantes sont disponibles : systmes stro 2 voies, mono 2 voies, 3 voies + sortie directe, ou systme mono 4 voies, tous offrant ventuellement une sortie mono pour canal Subwoofer et une sortie “large bande”. Dans tous les modes de fonctionnement, ce sont des filtres passe-haut et passe-bas qui se chargent de rpartir le spectre audio en plusieurs bandes de frquences (crossover). Ces filtres peuvent tre de type Linkwitz-Riley, Butterworth ou Bessel, avec des pentes commutables entre 6, 12, 18 et 24 dB/octave. De nombreux autres correcteurs permettent de modeler la courbe de rponse votre guise : chaque entre possde par ailleurs cinq correcteurs, pouvant tre un filtre passe-haut ou passe-bas, un correcteur daigus ou de graves de type Shelve (en plateau), ou un filtre paramtrique. Une fois le signal dorigine rparti en plusieurs bandes, quatre autres correcteurs peu- vent prendre place sur chaque canal de sortie : eux aussi peuvent travailler en modes passe-haut ou passe-bas, correcteur daigus ou de graves de type Shelve (en plateau), filtre paramtrique, voire filtre passe-tout. Des fonctions de filtrage supplmentaires sont encore prvues, sous la forme de filtres passe-haut du second ordre permet- tant la ralisation dalignements de type B-6, ou des filtres spciaux de type LPN (pour Low-Pass Notch, filtres passe-bas de type Notch) permettant de corriger la rponse en frquence et en phase dencein- tes de graves travaillant en bass-reflex. Chaque canal offre en plus un dlai, un inverseur de phase, un rglage de niveau programmable et un compresseur/limiteur numrique, les dlais principaux se trouvant au niveau des canaux dentre. Deux modes de fonctionnement sont la disposition de lutilisateur : le mode “No Edit”, qui ne permet que de slectionner la combinaison denceintes dsire dans la liste donne par le Programme Preset dusine. Dans ce cas, lappareil est configur de faon optimale en fonction de linstallation, et peut tre exploit instantanment. Enfin, le mode “Full Edit”, lui, permet daccder tous les paramtres, ce qui permet de programmer en toute libert et de mmoriser ses Program- mes. Lappareil compte 80 emplacements mmoire - 50 pour les Programmes Presets dusine et 30 pour les Programmes utilisateur. lintrieur du Dx 38, les conversions A/N et N/A seffectuent en 24 bits linaires (Delta-Sigma, surchantillonnage 128 fois), et les traite- ments du signal sont calculs par deux DSP Motorola 24 bits. Additional features are: -FLASH memory for software and preset updates via serial interfaces -PC-based operation and configuration software running under Windows 95 / Windows 98 -Standard MIDI-interface -RS-232, RS-485 interfaces or switching contacts optionally available -Back-lit graphic-display with 122 x 32 dots -Inputs and outputs are electronically balanced, XLR-type connectors -Input transformer-balancing is optionally available -Input / Output level controls, Output-Mute switch, channel function indicators SUB, LO, MID, HI -Input / Output meter instruments, compressor and clipping LEDs Parmi les autres caractristiques : - Mmoire FLASH pour le logiciel dexploitation et les Presets, ce qui permet la mise jour via interface srie. - Logiciel de configuration et de commande pour PC, tournant sous Windows 95/98. - Interface MIDI Standard. - En option, commande via interfaces RS-232, RS-485 ou commutation par contacts. - Affichage graphique rtro-clair, 122 x 32 points. - Entres et sorties sur XLR, symtrie lectronique. - En option, symtrisation par transformateur dentre. - Potentiomtres de rglage des niveaux dentre et de sortie, commutateur de coupure des sorties (Mute) indicateurs SUB, LO, MID, HI par canal. - Visualisation par VU-mtres des entres/sorties, du compresseur, LED dcrtage. TECHNICAL SPECIFICATIONS Mains voltage 90 - 250 V AC / 50 - 60 Hz Power consumption 20 watts Safety class I Inputs 2 x XLR IN, electronically balanced, transformer optional available 2 x XLR OUT (Direct Out) Input voltage (nominal)1.55 V / + 6 dBu Max. input voltage 24.5 V / + 30 dBu Input impedance 20 kohms Common mode rejection 40 dB AD-conversion 24-bit, Sigma-Delta, 128 times oversampling, linear phase Outputs 4 x XLR OUT, electronically balanced Output voltage (nominal) 1.55 V / + 6 dBu Max. output voltage 8.7 V / + 21 dBu Output impedance < 100 ohms Min. load impedance 600 ohms DA-conversion24-bit, Sigma-Delta, 128 times oversampling Frequency response 20 Hz - 20 kHz (- 0.5 dB) S/N ratio 115 dB (typical) Distortion without transformer< 0.01 % Distortion with transformer< 0.05 % Frequency crossovers 6, 12, 18, 24 dB/oct. slope; Butterworth, Bessel, Linkwitz-Riley Filters 26 parametric equalizers Low-Shelving equalizer, LPN (Lowpass-Notch) switchable Hi-Shelving equalizer, 6 / 12 dB slope switchable, Lo-Cut filter (B-6 alignment switchable), Hi-Cut filter, All-Pass filter Compressor / limiter 4 digital compressors / limiters Delay 3 master delays (2 ms - 900 ms) 4 channel delays (0 ms - 900 ms) delay-increment 21 sec. Data format 24-bit linear AD / DA conversion, 48-bit processing Sampling rate 48 kHz MIDI IN / OUT / THRU Data Dump, Master / Slave operation, Remote Control Display 122 x 32 Dots, graphic LC-Display with LED-background lighting Dimensions 483 x 43.6 x 374 (WxHxD in mm), 19, 1 HU Weight 5 kg / 11 lbs Locking function Protection against inadvertent operation via function-lock Accessories PA 1 plexiglas cover 1 HU Options NRS 90244 Input transformer NRS 90247 RS-485 interface NRS 90246 Contact Closure interface RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 1 Measuring data Dx 38 complete device 1. Power Supply 1.1Operation VoltageU Mains 90 - 250 V AC, 50 - 60 Hz 1.2Operation Currentat U Mains = 110 V AC200 mA at U Mains = 230 V AC130 mA 1.3Power Consumption14 W 1.4Internal Operation Voltage+5 V 0,1 V +18 V 1 V -18 V 1 V 1.5Internal Operation Currents+5 Vmax. 460 mA +18 Vmax. 400 mA -18 Vmax. 250 mA 1.6Power Supply Switching Frequency192 kHz 2. Inputs 2 x XLR IN, electronically balanced, 2 x XLR Direct Out, Input transformers (NRS 90244) are optionally available 2.1Input Impedanceelectronically balanced20 k 2.2Input Voltage 14,5 V = +15 dBu Max. Input Voltage24,5 V = +30 dBu 2.3Common Mode RejectionCMRR 40 dB 3. Outputs 4 x XLR OUT, electronically balanced 3.1Output Impedance 80 dB RadioFans.CN 收音机爱 好者资料库 2 6. Distortion 6.1THD+N 4 fig. 2 , fig. 320 Hz . 20 kHz < 0.01 % +10 dBu 7. Interference Voltages 7.1Wide Band Noise Voltage 5 50 V = -84 dBu 7.2Noise Voltage (CCIR 468-3) 6 140 V = -75 dBu 7.3Noise Voltage (A-weighted) 7 18 V = -93 dBu 8. Retrofitting Input Transformers Retrofitting input transformers NRS 90244 results in the change of the following values: 8.1THD+N 4 figure 470 Hz . 20 kHz < 0.01 % +10 dBu THD+N 4 figure 420 Hz . 20 kHz 40 dB AD-conversion24-bit, Sigma-Delta, 128 times oversampling, linear phase Outputs4 x XLR OUT, electronically balanced Output voltage (nominal) 1.55 V / + 6 dBu Max. output voltage 8.7 V / + 21 dBu Output impedance < 100 ohms Min. load impedance 600 ohms DA-conversion24-bit, Sigma-Delta, 128 times oversampling Frequency response20 Hz - 20 kHz (- 0.5 dB) S/N ratio115 dB (typical) Distortion without transformer< 0.01 % Distortion with transformer keys while the unit is powered on. The display shows briefly: SERVICE MODE Selecting the service programs in sequence is possible by using the SELECT keys or via the rotary encoder. Pressing the RECALL key launches the previously selected program or, while a service program is running, to cancel the test. Switching the device off or by use of the command, the service mode is ceased. Available Service Programs: P-ROM TEST P-RAM TEST EEPROM TEST KEY TEST ENCODER TEST LED TEST DISPLAY TEST RS232 TEST RS485 TEST CONTACT P TEST MIDI TEST DSP-RAM TEST HW-CONN TEST ORIGINAL THRU SINE WAVE OUT PINK NOISE WHITE N