INOmini Multimode Audio Processor

Model 223

UPC: 850025677004

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: STUDIO, 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

Why talk radio stations should be broadcasting in mono, not stereo.

– DAVID BIALIK. Radio World Guest Commentary, April 17, 2022 Let´s Talk About Mono

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 32ºF/0ºC and 122ºF/50ºC; 0-95% relative humidity, non-condensing, altitudes to 10,000ft/3,048m.

 

Download

223 User Manual PDF Download

223 Data Sheet PDF Download

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