223 INOmini Inovonics

223 INOmini Multimode

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 unit meets the needs of NRSC compliant AM transmissions with a range of cut-off frequencies, TIS (Traveler's Information Service) alerts, monophonic LPFM transmission and analogue SCA sub-carriers. A full range "Studio" mode meets the needs of microphone processing and general production.

223 INOmini Inovonics

INOmini 223 features AGC with gated and windowed gain, 3 adjustable dynamic range compression bands with selectable crossover and variable EQ and narrow lookahead peak control. Pre-emphasis, with its own protection limitation, and overshoot controlled output filtering are individually and specifically adapted to the selected service.

Features

Ideal for: AM USA / NRSC, AM worldwide, short wave, FM monophonic USA / Euro, TIS and SCA analogue
Easy configuration of the menu / jog-wheel from the front panel
Performs AGC, 3-band compression, peak control and output filter specific to the selected application
User adjustable compression, EQ, limitation and program density
The DSP "lookahead" limitation offers tight peak control without clipping
The USB connector allows quick firmware updates in the field
Headphone jack

Specifications

Operating modes
NRSC-compliant asymmetric AM processing with 10 kHz, 9 kHz, 7 kHz and 5 kHz cutoff (9-pin Cauer)
Asymmetric AM processing TIS with 5 kHz cutoff (9-pole Cauer)
FM processing (monophonic) with pre-emphasis of 75μs / 50μs and 15kHz cutoff (7-pole Cauer).
SCA processing with uniform 5kHz cutoff (6th order Butterworth)
Frequency response
20 Hz - 20 kHz, ± 0.1 dB in PROOF and Studio modes; all specialised applications comply with the specified cutting characteristics.

Distortion

0.02% THD in PROOF mode.

Signal-Noise

Better than 72dB below the limited ceiling level measured by an appropriate deenphasis network.

Program line input

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

Program line output

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

Latency

3.5 ms - 4.5 ms, depending on the application selected.

Headphone jack

Front panel (TRS) 3.5 mm.

USB port

Connect the front panel for firmware updates.

Measurement

Input / Output / AGC Gain / Compression / Limitation

Alarms

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

Power Requirements

12 V DC at 200 mA (2.1 mm x 5.5 mm coaxial); switching in-line power supply included.