Overview
The AARON 650 is Inovonics' new-generation FM relay receiver designed to handle the most challenging signal reception problems. The AARON 650 combines unparalleled reception performance with advanced features to deliver superior signal sensitivity and signal selectivity over the best commercial and residential receivers on the market.

AARON has two modes of operation, either through or in regenerative mode. The pass-through mode eliminates the delay of retransmissions, while the regenerative mode provides the ability to completely rebuild the baseband signal, adding a new RDS, eliminating noise and interference.

The back panel provides dual antenna inputs, dual composite outputs, balanced analog output and AES digital audio output and remote IP access. The instrument automatically records and checks for audio loss, RF signal loss, and RDS loss (or “hijacking”) and alerts. When any alarm is triggered, the instrument will automatically send an email or short message to the relevant personnel. The front panel displays the left and right audio meters, and the LCD screen flashes an alarm. The knobs on the panel are used to set various parameters on the adjustment LED screen. Failover audio backups are available through the front panel SD card or network audio stream.

The AARON650's real-time web interface allows you to set up your instrument, listen to live audio or view your recordings from anywhere on the phone or on your phone. A reliable network system based on dynamic DNS ensures unimpeded data transmission between the PC and the instrument. Comes with advanced audio signal metering tools, including real-time MPX spectrograms and full-band scanning. Receive bandwidth, auto-tuning and many other receiver parameters can be handled manually or automatically.

Main Feature
• Unique DSP-based receiver performance.
• Composite through and baseband regeneration modes.
• Dual antenna input (N-type connector) and dual composite output (independently adjustable) to balance analog digital signal output with AES digital signal output.
• Active signal processing, such as bandwidth limiting, stereo mixing, HF mixing, etc.
• Extended FM band tuning range: 64MHz to 108MHz.
• Advanced metering charts. Includes MPX FFT spectrum analysis, left/right channel XY plots and audio level plots over time.
• On-site RF spectrum analysis with available frequency band scanning.
• Local alarm system and self-recording alarm system continuously detect audio loss, RF loss and RDS loss based on set thresholds.
• RDS information can be modified in stereo reproduction mode.
• Play content back through SD card and network streaming audio to handle failures.
• Web interface with listening capabilities. Email and SMS alert notifications.
• SNMP remote monitoring and control.
• Includes “N” to “F” antenna adapters.

Product specifications

Overall performance:

Tuning range: extended FM band: 65.0MHz-108.0MHZ

Signal Sensitivity/Noise: AES digital signal output and L/R analog signal output, unweighted mono SNR at a specific RF input level and 75KHz carrier

frequency offset:

• In the case of 60dBμv: >82dB digital signal, > 80dB analog signal
• In the case of 40dBμv: >78dB digital signal, >76dB analog signal
• In the case of 20dBμv: > 60dB digital/analog signal
• In the case of 10dBμv: >50dB digital/analog signal
• In the case of 0dBμv: >43dB digital/analog signal

Selectivity:

Optional IF bandwidth: 311kHz, 287kHz, 254kHz, 236kHz, 217kHz, 200kHz, 184kHz, 168kHz, 151kHz, 133kHz, 114kHz, 97kHz, 84kHz, 72kHz, 64kHz and 56kHz

Frequency response:

• Composite / MPX output (straight through): ±0.5dB, 20Hz-100kHz.
• AES digital signal and L / R analog signal output: > ± 0.2dB, 20Hz - 15kHz.
Stereo resolution (at 1kHz):
• Composite / MPX output: >45dB in pass-through mode. > 50dB in MPX-regeneration mode.
• AES digital signal and L / R analog signal output: > 50dB

Signal delay:

• Composite / MPX output: <250μs in pass-through mode; <2.4ms in MPX-regeneration mode.
• AES digital signal and L / R analog signal output: <2.4ms

Regional settings:

• FM stepping: 200kHz, 100kHz or 10kHz.
• De-emphasis analog signal output: 75μs or 50μs.
• Radio data category: RBDS or RDS.

Rear panel interface:

Antenna input: Two 50 ohm (N) inputs can be assigned to any preset station.
Digital signal output: AES3 (XLR) 24-bit stereo output can be adjusted according to the corresponding ±75 carrier frequency offset, with or without de-emphasis, ranging from -30dBFS and 0dBFS. The output sample rate can be set to 32kHz, 44.1 or 48kHz.
Analog signal output: Active balance (XLR) bit stereo output can be adjusted according to the corresponding ±75 carrier frequency offset, with or without de-emphasis, ranging from -20dBu to + 18dBu (+ 15.5dBm). The source impedance is 200 ohms.
Composite / MPX output: Two unbalanced (BNC) bit stereo outputs can be adjusted according to the corresponding ±75 carrier frequency offset, with or without de-emphasis, independently adjustable range from 1V P-P to 6V P-P. The source impedance is 75 ohms.
USB interface: Provides raw RDS data for analysis.
Network port: RJ45 interface, accepts TCP / IP network protocol, can set up and run monitoring of AARON 650 remotely.
Headphone jack: The TRS interface headphone jack is used to listen to the output program for verification.

Audio failover protection:

In case of loss of input carrier, audio signal, or RDS "hijacking". The output can be replaced with a pre-recorded program. Programs can be obtained from a plug-in SD card or on the web's audio stream.

Audio processing function:

Whether in pass-through or MPX regeneration mode, up to 3dB of clipping can be added to define the most appropriate FM deviation limit. The 19 kHz stereo pilot and the 57 kHz RDS subcarrier will be stripped, filtered, and then re-inserted after clipping.

User Interface:

Front panel: LCD and knob provide convenient and reliable menu operation, LED "VU" meter is used to display L / R audio strength.
Software Control: The IP network port enables the AARON 650 to be remotely set up and operated on a local network or any external network using a desktop, tablet or mobile phone.
SNMP: SNMP remote monitoring support.

Miscellaneous:

Test tone generator: range 20Hz - 20kHz, 60dB attenuator.
AC power: 90-130VAC or 200-255VAC, 50 / 60Hz, 5W.
Dimensions: Height: 1 3⁄4in / 44mm Width: 19in / 483mm, Length: 9 1⁄2in / 240mm (1U).
Weight: 9lbs / 4kg (net), 12lbs / 5.4kg (shipping).

Operating environment: Ambient temperature 32 °F / 0 °C to 122 °F / 50 °C, relative humidity 0-95%, non-condensing, height 10,000 in / 3048m can guarantee continuous operation.

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