APT WorldNet Ohio ISDN Audio Codec

The impressive WorldNet Ohio connects to high speed synchronous networks and has ISDN connecting flexibility that provides exceptional audio quality, compatible for the most demanding broadcast environments

• X.21 / V.35 interface with automated ISDN (128kbit/s) back up
• S or U bus ISDN interface
• Simultaneous AES/EBU and Analog Outputs
• Standard and Enhanced apt-X
• Audio bandwidths from 10Hz through to 22.5kHz
• 16, 20 and 24 bit word resolution
• Silence Detect alarm mode
• 5 alarm relays and 4 opto-coupled inputs for remote status
• Speed-dial redial back-up facility
• RS232 Aux data to 9600 baud
• Headphone monitoring of audio inputs or outputs
• Dial and Drop on Contact Closure

A professional, broadcast-grade audio codec, the WorldNet Ohio delivers high quality audio content under the most stressful of circumstances.

The main X.21 / V.35 interface enables connection to high speed synchronous networks including T1/E1, fractional T1/E1, satellite or microwave links at rates of up to 576kbps. The alternative ISDN connections (up to 2 ‘B’ channels) can be used as the primary link or to back-up the X.21 / V.35 line.

WorldNet Ohio can also enable dual destination links, allowing separate mono streams to be sent to two independent ISDN numbers.

Incorporating both Standard apt-X® (16 bit) and Enhanced apt-X® (16, 20 and 24 bit) algorithms, the WorldNet Ohio offers exceptional audio quality for AM, FM, DAB and HD Radio broadcasting. As an ADPCM-based algorithm, apt-X is non-destructive in nature and highly resilient to the degrading effects of cascading / tandem coding. With an unparalleled delay of under 2ms, Enhanced apt-X coding enables a host of broadcast applications including live talk-back and confidence monitoring.

Configuration and control is straightforward with the WorldNet Ohio; the front panel comprises a numeric keypad, menu navigation keys and an LCD display. Also on the front panel, a headphone socket and audio level bars enable easy monitoring of input and output audio levels.

Options

The following options are available on the WorldNet Ohio:

WorldNet Ohio 
19”, 1 U high, Standard 16 bit apt-X, Enhanced 16, 20 & 24 bit apt-X, Mucas, A/D & D/A, AES/EBU, simultaneous Analog and AES/EBU o/p's, 2 x panic dial opto-inputs, Silence Detect, 5 Alarm Relay, 2 x Opto-coupled inputs, RS232 asynchronous ancillary data, RS232 remote control, X.21 / V.35, 1 x ISDN BRI S interface, fully automated ISDN back up and recovery.  26-01-16-02/Ohio 

WorldNet Ohio North American Version 
19”, 1 U high, Standard 16 bit apt-X, Enhanced 16, 20 & 24 bit apt-X, Mucas, A/D & D/A, AES/EBU, simultaneous Analog and AES/EBU o/p's, 2 x panic dial opto-inputs, Silence Detect, 5 Alarm Relay, 2 x Opto-coupled inputs, RS232 asynchronous ancillary data, RS232 remote control, X.21 / V.35, 1 x ISDN BRI U interface, fully automated ISDN back up and recovery. 
26-01-16-02/U/Ohio

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