INOVONICS introduces their AARON 655, a new HD Radio receiver in the firm’s line of rebroadcast (translator) products. The AARON 655 employs a sensitive FM / HD Radio SDR-based receiver that invariably returns to the programmed frequency and reception mode following a power interruption. In addition to FM and HD1-8 program sources for rebroadcast, the 655 accepts analog, AES-digital and streaming program inputs with fallback-priority selection. Outputs are FM-stereo-multiplex (MPX) as well as both analog and AES digital program line outputs and output streaming.
IP connectivity with a Web-browser interface permits total remote control of the unit from any PC or mobile device, along with remote audio monitoring. Local GPIO failure alarms are augmented with email notifications, alarm logs, and full support for SNMP operation.
Comprehensive audio processing includes gated and ‘windowed’ AGC, a unique ‘syllabic’ leveler, three bands of compression, and both wideband and independent HF limiting. 4 sections of parametric EQ, a ‘Bass Punch’ utility, independent Density and Loud/Smooth adjustments, and variable composite processing round-out the processing function. The AARON 655 includes an onboard RDS encoder that can either pass or regenerate incoming RDS, and can also reformat HD Radio ‘PAD’ data for RDS retransmission.
87.5MHz - 107.9MHz in 100kHz steps
5dBμV for 50dB unweighted, monaural analog-FM SNR
Off-Air Frequency Response
5μs or 50μs, menu-selectable
Stereo Separation (at 1kHz)
HD Radio: >90dB
Radio Data System
Program Signal Latency (Delay)
Analog-FM or Line-In Sources: 3.7ms to analog line out, 4.53ms to digital line out, 4.1ms to MPX out
HD Radio Source: typically 8 seconds to any output
INPUTS & OUTPUTS
75Ω (BNC); 1V p-p - 6V p-p for ±75kHz FM carrier deviation
Program Line Inputs
Analog: Active-balanced (XLR) accepts ‘0VU’ line levels between –15dBu and +15dBu; +24dBu clipping
AES Digital: Balanced (XLR) accepts peak line levels between –30dBFS and 0dBFS at sampling rates between 32kHz and 96kHz
IP Streaming: Accepts Icecast/SHOUTcast MP3, Ogg and AAC streams
Program Line Outputs
Characteristic: Analog and digital program line outputs may be switched between FM-pre-emphasized or ‘normalized’ (flat) response
Analog: Active-balanced (XLR) delivers –12dBu to +18dBu at 100% modulation; +18dBu clipping; 200Ω source
AES Digital: (XLR) 24-bit, 44.1kHz sampling; delivers –30dBFS to 0dBFS at 100% modulation
Streaming: MP3-encoded for remote IP/browser monitoring
RJ45 jack TCP/IP network connection for complete remote setup and operation of the AARON 655; supports SNMP
4 GPI, 6 GPO screw-terminal connections, all assignable with selectable logic polarity; enable contact-closure control of certain setup and operating functions and provide local external alarm tallies or connection to remote control systems
¼-inch front-panel (TRS)
FAILOVER AUDIO PROTECTION
Four progressive (sequential) failovers may be selectively programmed to respond to carrier loss, audio loss, FM pilot loss, HD loss, stream loss or RDS mismatch as appropriate to the source fault.
Gated, ‘gain-riding’ AGC with ±15dB capture range; dualrate ‘windowed’ operation
Variable ‘syllabic’ 2:1 compression normalizes dialog and music sources
4-sections of parametric EQ, each with variable frequency, ‘Q’ and gain
Variable bass enhancement accents the initial bass attack
3-bands of r.m.s. and peak compression with selectable crossover frequencies, variable master and individual band drive controls
Final Peak Control
Feed-forward final peak limiting eliminates flat-top clipping; independent HF limiter for pre-emphasis protection
0dB - 3dB adjustable MPX clipping depth (excludes stereo pilot and RDS subcarrier)
10 factory, 10 user-defined presets
PI, PTY, PS, RT, M/S, TP, DI, CT, AF
HD ‘PAD’ to RDS
HD Radio Name, Slogan, Artist, Title, Album and Genre may be converted to the RDS scrolling-PS and RT fields
Streamed Name, Metadata, Description and Genre may be converted to the RDS scrolling-PS and RT fields
Telnet to RDS
Accepts dynamic PS and Radio Text updates via IP
A built-in spectrum analyzer utility sweeps the entire FM band (or a selected portion) and presents a graphic display of all signals received, includinag RSSI values and HD Radio transmissions.
Fault alarms include radio audio loss, analog audio loss, digital audio loss, stream audio loss, low signal, RDS error, stereo pilot loss and HD Radio channel loss. Alarms trigger front-panel indications, local (GPO) closures, browser interface notations, SMS/email dispatches, SNMP.
Alarms are logged and may be downloaded as daily, weekly or monthly CSV files.
All setup and operating controls and alarm functions of the AARON 655 are under SNMP management.
Internal Test Tone Generator
20Hz - 20kHz; programmable frequency and amplitude
88VAC - 264VAC, 48Hz - 63Hz (‘universal’); 12 watts
Size and Weight
H: 1¾”/44mm, W: 19”/483mm, D: 9½”/240mm (1U); 9lb/4kg (net, 12lbs/5.4kg (shipping)
32°f/0°C - 122°F/50°C; 0% - 95% non-condensing relative humidity; 10,000ft/3048m