Optimod-Surround 8685 V1.0 Operating Manual - Orban

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6-14 TECHNICAL DATA ORBAN MODEL 8685 dBu decibel voltage measurement. 0 dBu = 0.775V RMS. For this application, the dBm-into- 600Ω scale on voltmeters can be read as if it were calibrated in dBu. DI digital input DJ disk jockey, an announcer who plays records in a club or on the air DO digital output DOS Microsoft disk operating system for IBM-compatible PC DSP digital signal processor (or processing). May also refer to a special type of microprocessor optimized for efficiently executing arithmetic. EBU European Broadcasting Union EBS Emergency Broadcasting System (U.S.A.) EMI electromagnetic interference ESC escape FCC Federal Communications Commission (USA regulatory agency) FDNR frequency-dependent negative resistor⎯an element used in RC-active filters FPGA Field-programmable gate array FET field effect transistor FFT fast Fourier transform FIFO first-in, first-out G/R gain reduction HF high-frequency HP high-pass IC integrated circuit IM intermodulation (or “intermodulation distortion”) I/O input/output ITU International Telecommunications Union (formerly CCIR). ITU-R is the arm of the ITU dedicated to radio. JFET junction field effect transistor LC inductor/capacitor LCD liquid crystal display LED light-emitting diode LF low-frequency LP low-pass LVL level MHF midrange/high-frequency MLF midrange/low-frequency MOD modulation N&D noise and distortion N/C no connection OSHOOT overshoot PC IBM-compatible personal computer running a Microsoft Windows® operating system PCM pulse code modulation PIC A family of small microprocessors often used for embedded systems PPM peak program meter RAM random-access memory RC resistor/capacitor REF reference RF radio frequency RFI radio-frequency interference RMS root-mean-square ROM read-only memory SDI / HD-SDI serial data interface and high-definition serial data interface — a family of SMPTE standards allowing audio, video, and ancillary data to be multiplexed together and conveyed via 75 ohm coaxial cable or optical fiber at speeds up to 3 Gb/sec.
OPTIMOD SURROUND PROCESSOR TECHNICAL DATA 6-15 S/PDIF Sony/Philips digital interface (standardized as IEC958) TRS tip-ring-sleeve (2-circuit phone jack) THD total harmonic distortion TX transmitter μs Microseconds. For pre-emphasis, the +3 dB frequency is 1/(2 π τ), where τ is the preemphasis time constant, measured in seconds. VCA voltage-controlled amplifier VU volume unit (meter) XLR a common style of 3-conductor audio connector XTAL crystal Parts List Many parts used in the 8685 are surface-mount devices (“SMT”) and are not normally field replaceable because specialized equipment and skills are necessary to remove and replace them. The list below includes substantially all of the parts used in the 8685 (including surface-mount devices) and inclusion of a part in this list does not imply that the part is field-replaceable. See the following assembly drawings for locations of components. Obtaining Spare Parts Special or subtle characteristics of certain components are exploited to produce an elegant design at a reasonable cost. It is therefore unwise to make substitutions for listed parts. Consult the factory if the listing of a part includes the note “selected” or “realignment required.” Orban normally maintains an inventory of tested, exact replacement parts that can be supplied quickly at nominal cost. Standardized spare part kits are also available. When ordering parts from the factory, please have available the following information about the parts you want: Orban part number Reference designator (e.g., C3, R78, IC14) Brief description of part Model, serial, and “M” (if any) number of unit ⎯ see rear-panel label To facilitate future maintenance, parts for this unit have been chosen from the catalogs of well-known manufacturers whenever possible. Most of these manufacturers have extensive worldwide distribution and can be contacted through their web sites.
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Operating Manual OPTIMOD 8685 Surro
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IMPORTANT SAFETY INSTRUCTIONS All t
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Manual PLEASE READ BEFORE PROCEEDIN
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Operating Manual OPTIMOD 8685 Surro
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LIMITED WARRANTY...................
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Advanced Two-Band Controls ........
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CIRCUIT DESCRIPTION................
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Function Description Drawing Page H
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C CALM Act 1- · 3 CBS Loudness Lev
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dual-mono mode 2- · 34 dull sound
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Reassembling 4- · 7 LCD display 6-
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DSP board 6- · 22 Encoder board 6-
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Resetting 8585 2- · 44 resolution
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Changing via terminal program 2- ·
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OPTIMOD SURROUND PROCESSOR INTRODUC
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2-2 INSTALLATION ORBAN MODEL 8685 C
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2-4 INSTALLATION ORBAN MODEL 8685 P
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2-6 INSTALLATION ORBAN MODEL 8685 A
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2-8 INSTALLATION ORBAN MODEL 8685
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OPTIMOD SURROUND PROCESSOR OPERATIO
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Page 219 and 220: OPTIMOD SURROUND PROCESSOR OPERATIO
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Page 231 and 232: OPTIMOD MAINTENANCE 4-3 F) Disconne
Page 233 and 234: OPTIMOD MAINTENANCE 4-5 11. Removin
Page 235 and 236: OPTIMOD MAINTENANCE 4-7 18. Replaci
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Page 239 and 240: OPTIMOD MAINTENANCE 4-11 Test Proce
Page 241 and 242: OPTIMOD MAINTENANCE 4-13 D) LOCATE
Page 243: OPTIMOD MAINTENANCE 4-15 SMPTE Rise
Page 246 and 247: 5-2 TROUBLESHOOTING ORBAN MODEL 868
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(SHT7) (SHT7) (SHT6) (SHT6) (SHT6)
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6-66 TECHNICAL DATA ORBAN MODEL 868
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L703 HZ0805G102R-10 C703 +3.3V 0.1U
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J2 1 2 3 4 5 6 7 8 9 10 11 12 13 14
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From Interface Board J2 Pin 4 is au
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GND 1 +5VD 4 VCC GND 2 IC201 /TOVER
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J300A BNC DUAL with CAPACITOR UPPER
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IN-CIRCUIT SERIAL PROGRAMMING INTER
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+5VD Y902 1 2 DGND1 +3.3V_CLK 25.00
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+2.5V DGND +2.5V DGND +2.5V DGND +2
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+2.5V DGND_CLNR + C1300 47uF/10V +1
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RS485-SDI INTERFACE DGND J200 2 4 6
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Optimod-Surround 8685 V1.0 Operating Manual - Orban

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