Crown_Ultra_Series_IQ-USM_810_Service_Manual电路图.pdf

《Crown_Ultra_Series_IQ-USM_810_Service_Manual电路图.pdf》由会员分享，可在线阅读，更多相关《Crown_Ultra_Series_IQ-USM_810_Service_Manual电路图.pdf（172页珍藏版）》请在收音机爱好者资料库上搜索。

1、Digital Processor / Digital Mixer SERVICE MANUAL 130447-1 04-00 Rev. A 2000 by Crown International, Inc., P.O. Box 1000, Elkhart, Indiana 46515-1000 U.S.A. Telephone: 219-294-8000. Trademark Notice: Distributed Intelligence and IQ for Windows are trademarks and Crown, IQ, and IQ System are registere

2、d trademarks of Crown International, Inc. Other trademarks are the property of their respective owners. Models: IQ-USM 810 Some models may be exported under the name Amcron. RadioFans.CN 收音机爱 好者资料库 IQ-USM 810 Service Manual II 130447-1 Rev. A 2000 Crown International, Inc. PRVENIR LE CHOC LECTRIQUE

3、NENLEVEZ PAS LES COUVERTURES. RIEN DES PARTIES UTILES LINTRIEUR. DBRANCHER LA BORNE AVANT DOUVRIR LA MODULE EN ARRIRE. TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. DISCONNECT POWER CORD BEFORE REMOVING

4、 REAR INPUT MODULE TO ACCESS GAIN SWITCH. CAUTIONAVIS WARNING TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE! The information furnished in this manual does not include all of the details of design, production, or variations of the equipment. Nor does it cover

5、every possible situation which may arise during installation, operation or maintenance. If you need special assistance beyond the scope of this manual, please contact the Crown Technical Support Group. Mail: P.O. Box 1000 Elkhart IN 46515-1000 Shipping: Plant 2 SW 1718 W. Mishawaka Road Elkhart IN 4

6、6517 Phone: (800) 342-6939 / (219) 294-8200 FAX: (219) 294-8301 The lightning bolt triangle is used to alert the user to the risk of electric shock. The exclamation point triangle is used to alert the user to important operating or maintenance instructions. RadioFans.CN 收音机爱 好者资料库 III 130447-1 Rev.

7、A IQ-USM 810 Service Manual 2000 Crown International, Inc. Revision History Revision NumberDateComments Rev. A04-2000Initial Printing RadioFans.CN 收音机爱 好者资料库 IQ-USM 810 Service Manual IV 130447-1 Rev. A 2000 Crown International, Inc. This page intentionally left blank V 130447-1 Rev. A IQ-USM 810 Se

8、rvice Manual 2000 Crown International, Inc. Table of Contents 1 Introduction . 1-1 1.1 Introduction .1-1 1.2 The IQ-USM 810 .1-1 1.3 Warranty.1-1 2 Specifications . 2-1 3 Circuit Theory . 3-1 3.1 Overview .3-1 3.2 Power Supply .3-1 3.3 Input .3-1 3.3.1 Input Analog Processing.3-1 3.3.2 Clock Signals

9、 .3-2 3.3.3 A/D Conversion .3-2 3.3.4 DC Voltages .3-4 3.4 Output .3-4 3.4.1 Clock Buffers.3-4 3.4.2 DAC Conversion.3-4 3.4.3 Output Analog Processing .3-4 3.5 SHARC Processing .3-5 3.5.1 +3.3V Power Supply.3-5 3.5.2 Clocks .3-5 3.5.3 Reset .3-5 3.5.4 System Control Interface.3-5 3.5.5 PLDs.3-6 3.5.

10、6 Bus Arbitration.3-6 3.5.7 Bus Utilization.3-6 3.5.8 DSP Processing .3-6 3.5.9 Audio Routing.3-8 3.6 System Controller.3-8 3.6.1 Control Processing.3-9 3.6.2 RS232.3-10 3.6.3 Crown Bus Loop.3-10 3.6.4 Real Time Clock .3-10 3.6.5 Front Panel .3-10 3.6.6 Control Port .3-10 3.7 Front Display .3-10 4 M

11、aintenance. 4-1 4.1 General Information.4-1 4.2 Definitions.4-1 4.3 Required Test Equipment .4-1 4.4 Message String Syntax .4-2 IQ-USM 810 Service Manual VI 130447-1 Rev. A 2000 Crown International, Inc. 4.5 Standard Initial Conditions.4-2 4.6 Test Procedures.4-2 4.7 Typical Measurements.4-7 4.8 Tes

12、t/Debug Objects.4-7 4.9 Display Test Patterns .4-8 4.10 Error Codes.4-9 4.11 Troubleshooting FAQs .4-9 5 Parts Information. 5-1 5.1 General Information .5-1 5.2 Ordering and Receiving Parts .5-1 5.2.1 Terms .5-1 5.2.2 Shipment .5-1 6 Exploded View Parts . 6 -1 7 Module and Schematic Information. 7 -

13、1 8 Module Parts. 8-1 PWA 126451-3 .8-3 PWA 126690-3 .8-13 PWA 126693-4 .8-47 PWA 126744-3 .8-59 PWA 128045-1 .8-65 PWA 128047-3 .8-75 PWA 128047-4 .8-87 PWA 128049-1 .8-99 PWA 128051-3 .8-117 9 Schematics . 9-1 Table of Contents Introduction 1-1 130447-1 Rev. AIQ-USM 810 Service Manual 2000 Crown I

14、nternational, Inc. 1.1 Introduction This manual contains complete service information on the Crown IQ-USM 810 Digital Processor/Digital Mixer. It is designed to be used in conjunction with the Reference Manual; however, some important in- formation is duplicated in this Service Manual in case the Re

15、ference Manual is not readily available. NOTE: THE INFORMATION IN THIS MANUAL IS INTENDED FOR USE BY AN EXPERIENCED TECH- NICIAN ONLY! 1.2 The IQ-USM 810 The Crown IQ-USM 810 is an 8x10 mixer/processor that provides unique dual input processing paths. As an IQ component, it can be controlled by an I

16、Q Sys- tem, and with its distributed intelligence capability, continue to operate even when an IQ System is not connected. The IQ-USM 810 can also act as a sys- tem interface to other IQ components. The IQ-USM 810 features high-quality 24-bit A/D and D/A converters along with 240MIPS of full 32-bit

17、float- ing point DSP for optimum dynamic range. The dual input processing paths include a full comple- ment of signal processing features, including ad- vanced algorithms for gating, auto-leveling, filtering, compression and automixing. A full 8x8 Matrix Mixer allows any combination of rout- ing and

18、 mixing from any input to any output. The Ma- trix Mixer outputs are routed to the two Main Audio Outputs and eight AUX Audio Outputs. The Main and AUX Audio Output sections further process the sig- nal with individually adjustable signal delay and fil- ters along with an Ambient-Leveler and a high

19、perfor- mance Output Limiter for system protection. A Multi-Function Control Port implements analog and digital I/O for control and monitor by simple potenti- ometer and switch wall controllers and indicator pan- els. All of the IQ-USM 810 parameters are backed up via reliable FLASH memory. System c

20、onfigurations may be stored for recall from any of thirty-two system pre- sets from the front panel control or via IQ for Windows software. 1.3 Warranty Each Reference Manual contains basic policies as related to the customer. In addition, it should be stated that this service documentation is meant

21、 to be used only by properly trained personnel. Because most Crown products carry a 3-Year Full Warranty (includ- ing round trip shipping within the United States), all warranty service should be referred to the Crown Fac- tory or Authorized Warranty Service Center. See the applicable Reference Manu

22、al for warranty details. To find the location of the nearest Authorized Warranty Service Center or to obtain instructions for receiving Crown Factory Service, please contact the Crown Technical Support Group (within North America), or your Crown/Amcron Importer (outside North America). If you are an

23、 Authorized Warranty Service Center and have questions regarding the warranty of a product, please contact the Crown Factory Service Manager or the Crown Technical Support Group. 1 Introduction Crown Customer Service Technical Support Group Factory Service Parts Department Mailing Address: P.O. Box

24、1000, Elkhart IN 46515 Shipping Address: Plant 2 S. W. 1718 W. Mishawaka Rd., Elkhart IN 46517 Phone: (219) 294-8200 Toll Free: (800) 342-6939 Fax: (219) 294-8301 IQ-USM 810 Service Manual 1-2 Introduction 130447-1 Rev. A 2000 Crown International, Inc. Figure 1.1 IQ-USM 810 Front and Rear Views Spec

25、ifications 2-1 130447-1 Rev. AIQ-USM 810 Service Manual 2000 Crown International, Inc. 2 Specifications General Front Panel Controls: Front-panel switches select IQ Address, Baud Rate, factory default preset (P00), and any of 32 user-defined presets (P01P32). Rear-Panel Controls: A 3-position select

26、or switch (mic/line/phantom) and a calibrated gain control for each input. Connectors: Crown Bus: RJ-45 for input/output, RJ-45 for daisy output, RS232: DB9F computer interface for both component and interface modes. Multi-function Port: DB37M for analog inputs, digital inputs, digital outputs, +5VD

27、C, +10VDC and Ground. Audio Inputs and Outputs: 3-pin male removable barrier block con- nectors, Euro-style cable connector supplied. AC Power: IEC320 connector for AC power cord. Display: A blue front-panel Enable indicator lights to show that the unit is plugged in and AC power is being supplied.

28、An amber front-panel Data Signal Presence Indicator (DATA) flashes whenever commands ad- dressed to the IQ-USM 810 are received. A green front-panel Interface indicator lights when the IQ-USM 810 is being used as system interface. A three-digit digital display indicates the IQ-USM 810s initializatio

29、n sequence by displaying each processors name as it comes online, indicates the presently selected preset, indicates the IQ address and baud rate while those parameters are being adjusted, indicates when a pa- rameter has been stored in flash memory, and when any parameter is varied from its value w

30、ithin the cur- rently selected preset. Ladder Display: A front panel, sixteen-segment LED display matrix can be set to three different operating modes: Level Meter, Input Gate Status, and Infinity Pattern. Power Requirements: 100VAC to 240VAC, 35VA nominal. Protection: if communication is lost, the

31、unit will con- tinue to function with the last commands received. RS232 Data Communication Baud Rate: Selectable to 19.2 K, 38.4 K, 57.6 K, or 115.2 K BAUD. Data Format: Serial, binary, asynchronous; 1 start bit; 1 stop bit; 8 data bits; no parity. Crown Bus Data Communication Data Rate: 38.4 K BAUD

32、. Data Format: Serial, binary, asynchronous; 1 start bit; 1 stop bit; 8 data bits; no parity. Crown Bus Interface Type: Optically isolated 20 mA current loop. Operation: Half-duplex. Transmission Distance: Variable from 200 to 3000 feet (61 to 914 meters), depending upon wire capaci- tance. Typicall

33、y 1000 feet (305 meters) using shielded twisted-pair wire, #26 AWG or larger. Can be extended with an IQ Repeater. Audio Phantom Voltage: +24VDC at 10 mA. Input Gain Range: +20 dB to 12 dB. Digital Sampling: 24 bit, 48 kHz. Input Impedance: 20 k ohms balanced, 10 k ohms unbalanced. Dynamic Range: Gr

34、eater than 100 dB (A-weighted, 20 Hz20 KHz). Frequency Response: 0.5 dB, 20 Hz20 kHz. Common Mode Rejection: 50 dB (typical). Crosstalk: Greater than 80 dB at 10 kHz. Total Harmonic Distortion: Less than 0.05% THD + N (1 kHz, 0 dBu). Output Impedance: 100 ohms balanced, 50 ohms unbalanced. Max Input Level: +32 dBu (line) or +7 dBu (mic). Max Output Level: +20 dBu. Control Port Power Supply: +5VDC and +10VDC outputs are pro- vided. The total output current is limited to 1A. Outputs Logic Low: less than 0.1V. Logic High: 10V (via internal pull-up). Output Curren