Optimod-AM 9400 V1.2 Operating Manual - Orban

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6-12 TECHNICAL DATA ORBAN MODEL 9400 dBu DI DJ DO DOS DSP EBU EBS EMI ESC FCC FDNR FET FFT FIFO G / R HD Radio HF HP IBOC IC IM I/O ITU JFET LC LCD LED LF LP LVL MHF MLF MOD N&D N / C OSHOOT PC PCM PPM RAM RC RDS / RBDS REF RF RFI is usually 600. In this case only, 0 dBm = 0.775V rms. decibel voltage measurement. 0 dBu = 0.775V RMS. For this application, the dBm-into- 600 scale on voltmeters can be read as if it were calibrated in dBu. digital input disk jockey, an announcer who plays records in a club or on the air digital output Microsoft disk operating system for IBM-compatible PC digital signal processor (or processing). May also refer to a special type of microprocessor optimized for efficiently executing arithmetic. European Broadcasting Union Emergency Broadcasting System (U.S.A.) electromagnetic interference escape Federal Communications Commission (USA regulatory agency) frequency-dependent negative resistoran element used in RC-active filters field effect transistor fast Fourier transform first-in, first-out gain reduction See IBOC high-frequency high-pass “In-Band On-Channel” — a form of digital radio commercialized by iBiquity Corporation where the digital carriers use a form of COFDM modulation and share the frequency allocation of the analog carriers. Also known by its trademarked name of “HD Radio.” integrated circuit intermodulation (or “intermodulation distortion”) Input/Output International Telecommunications Union (formerly CCIR). ITU-R is the arm of the ITU dedicated to radio. junction field effect transistor inductor / capacitor liquid crystal display light-emitting diode low-frequency low-pass level midrange / high-frequency midrange / low-frequency modulation noise and distortion no connection overshoot IBM-compatible personal computer pulse code modulation peak program meter random-access memory resistor / capacitor Radio (Broadcasting) Data Service — a narrowband digital subcarrier centered at 57 kHz in the AM baseband that usually provides program or network-related data to the consumer in the form of text that is displayed on the radio. Occupied bandwidth is ±2500 Hz. reference radio frequency radio-frequency interference
OPTIMOD-AM DIGITAL TECHNICAL DATA 6-13 RMS ROM SC SCA S / PDIF TRS THD TX s VCA VU XLR XTAL root-mean-square read-only memory subcarrier subsidiary communications authorization a non program-related subcarrier in the AM baseband above 23 kHz (monophonic) or 57 kHz (stereophonic) Sony / Philips digital interface tip-ring-sleeve (2-circuit phone jack) total harmonic distortion transmitter Microseconds. For AM pre-emphasis, the +3 dB frequency is 1 / (2 ), where is the preemphasis time constant, measured in seconds. voltage-controlled amplifier volume unit (meter) a common style of 3-conductor audio connector crystal Parts List Many parts used in the 9400 are surface-mount devices (“SMT”) and are not intended for field replacement because specialized equipment and skills are necessary to remove and replace them. The list below includes substantially all of the parts used in the 9400 (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 parts 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 may be contacted through their web sites.
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Operating Manual OPTIMOD-AM 9400 Di
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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-AM 9400 Di
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Headphones ........................
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Gain Reduction Metering ...........
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SPECIFICATIONS ....................
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Index 8 8200ST 2- · 14 9 9400 HD 2
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display assembly removing 4 · 2 di
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PC Remote software 3- · 61 remote
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OPTIMOD-AM DIGITAL INTRODUCTION 1-1
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Optimod-AM 9400 V1.2 Operating Manual - Orban

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