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Inovonics INOmini 514

INOmini FM Multiplex Decoder


Inovonics INOmini 514
Inovonics INOmini 514Inovonics INOmini 514

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Inovonics INOmini 514 Figure 1

Inovonics’ INOmini 514 is a standalone decoder for FM-stereo multiplex signals. It accepts a demodulated FM-baseband input and decodes the signal to discrete left and right channel audio. The recovered stereo program is available as a professional line-level balanced output, and also as an AES digital audio signal.

Local alarm ʻtalliesʼ and selectable de-emphasis curves make the INOmini 514 an essential tool for professional applications wherever a stereo-baseband signal needs to be decoded and monitored.

Main Features:
• Decodes Composite/MPX signal into L/R audio.
• Analog L/R and AES-digital program line outputs.
• Accurate front-panel metering.
• Front-panel alarms with rear-panel ʻtalliesʼ for program Audio Loss (silence sense) and stereo Pilot Loss (stereo/mono status).
• Conforms to the worldwide FM ʻpilot-toneʼ system; selectable 75μs/ 50μs de-emphasis.


• Multiplex (MPX) Input: Unbalanced/bridging (BNC); 10k input impedance; requires 0.5V p-p minimum signal
• L/R Analog Line Outputs: Active-balanced (XLR), 200-ohm source impedance; +4dBu output at ʻ0dBʼ on front-panel meter
• AES Digital Output: Transformer-balanced (XLR), 44.1kHz sampling rate; –6dBFS output at ʻ0dBʼ on front-panel meter
• Headphone Jack: 3.5mm (TRS) for low-Z or high-Z phones, fixed listening level
• Program Audio De-Emphasis: 75μs/50μs, selected with push-on jumpers under the top cover 
• Audio Frequency Response: Follows selected de-emphasis characteristic ±0.5dB, 20Hz to 15kHz
• Noise: (SNR re: ±75kHz deviation)
• MONO: >69dB analog; >72dB, AESdigital.
• STEREO: >65dB analog; >65dB AESdigital.
• Distortion: ≤0.05% THD, 20Hz to 15kHz (analog/digital)
• Stereo Separation: >50dB 20Hz to 15kHz (analog/digital)
• Forced-Mono Operation: Enabled with a push-on jumper under the top cover.
• Alarm Tallies: Individual open-collector NPN transistor outputs for Program Audio Loss (either/both channels) and Pilot Loss (stereo/mono indicator)
• Power Requirement: 12VDC at 230mA.
• Mounting Options: An optional rack adapter accepts up to three INOmini modules in a 1U, 19-inch rack space, or the 514 may easily be fastened to any convenient surface with two small screws.
• Size and Weight: 1.6”H x 5.5”W x 5.5”D; 4 lbs. shipping weight.

List Price: $750.00
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