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      Multimode Audio Processor

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      The 223 is an audio processing powerhouse in a deceptively small package. Its versatile DSP-based design is user programmable to serve multiple broadcast applications - NRSC, AM, FM, SCA, TIS.

      The 223?s parametric equalizer offers continuous control over the audio signal's frequency content with 3 bands of dynamic compression and selectable crossovers.

      The unit addresses the needs of NRSC-compliant AM broadcasting with a range of cutoff frequencies, TIS (Traveler’s Information Service) advisories, monaural LPFM transmission, and analog SCA subcarriers. A full-range ‘Studio’ mode satisfies mic processing and general production needs.

      The INOmini 223 features gated and windowed gain-riding AGC, 3 bands of adjustable dynamic range compression with selectable crossovers and variable EQ, and tight ‘lookahead’ peak control. Pre-emphasis, with its own protection limiting, and overshootcontrolled output filtering are individually and specifically tailored to the service selected.

      "The INOmini 223 allows a station to reap the rewards of today’s digital technology thanks to this feature-rich, budget friendly processor."

      Bill DeFelice - HobbyBroadcaster.net

      Features


      • Ideal for: US/NRSC AM, Worldwide AM, Shortwave, US/Euro Monaural FM, TIS, and analog SCA

      • Easy menu / jog-wheel setup from the front panel

      • Performs AGC, 3-Band Compression, Peak Control, and Output Filtering specific to the selected application

      • User-adjustable compression, EQ, limiting, and program density

      • DSP ‘lookahead’ limiting offers tight peak control without clipping

      • USB connector enables fast firmware updates in the field

      • Headphone jack

      Reviews

      Inovonics Replaces 235 AM Processor With 223 Model

      - Michael Balderston Model 223 processor comes in INOmini package

      INOmini 223 Keeps It Simple

      - Bill DeFelice - HobbyBroadcaster.net INOmini 223 Keeps It Simple

      Specifications


      Operating Modes

      • NRSC-compliant asymmetrical AM processing with 10kHz, 9kHz, 7kHz, and 5kHz (9-pole Cauer)cutoffs
      • TIS asymmetrical AM processing with 5kHz (9-pole Cauer) cutoff
      • FM processing (monaural) with 75μs/50μs pre-emphasis and 15kHz (7-pole Cauer) cutoff.
      • SCA processing with smooth 5kHz (6th order Butterworth) cutoff

      Frequency Response

      20Hz – 20kHz, ±0.1dB in PROOF and Studio modes; all specialized applications conform to specified cutoff characteristics.

      Distortion

      0.02% THD in PROOF mode.

      Signal-to-Noise

      Better than 72dB below the limited ceiling level measured through an appropriate de-emphasis network.

      Program Line Input

      Active-balanced (XLR) analog input, accepts nominal line levels between –20dBu and +20dBu.

      Program Line Output

      Active-balanced (XLR) delivers output levels between –15dBu and +12dBu corresponding to 100% modulation; 200-ohm resistive source. A switch under the top cover inserts a 20dB pad in the output for transmitters requiring a low level input.

      Latency

      3.5ms – 4.5ms, depending on selected application.

      Headphone Jack

      Front-panel (TRS) 3.5mm.

      USB Port

      Front-panel connection for firmware updates.

      Metering

      Input / Output / AGC Gain / Compression / Limiting

      Alarms

      Flashing front-panel indication of audio loss and AGC out-of-range.

      Power Requirement

      12VDC at 200mA (2.1mm x 5.5mm coaxial); inline switchmode power supply included.

      Mounting Options

      An optional rack adapter mounts one, two, or three INOmini format units in a standard 19-inch, 1U rack space.

      Size and Weight

      1.6”H x 5.5”W x 5.5”D 4 lbs. shipping weight

      Environmental

      Continuous operation at ambient temperatures between 32?F/0?C and 122?F/50?C; 0-95% relative humidity, non-condensing, altitudes to 10,000ft/3,048m.

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