Description

DHY-04

Single Automatic Digital TBU, AES/EBU & Analogue I/O With Ethernet

The DHY-04 is a single automatic digital TBU, 19″ (48.3cm) rack-mount unit.

The DHY-04 telephone hybrid is an enhanced redesign of the DHY-03, the best-performing telephone hybrid in the world. It now features auto-sensing combined analogue and AES/EBU inputs and outputs, front panel speed dial buttons, and an Ethernet interface for web browser access to configuration and internal settings. All while still retaining stunning line balance rejection figures. For the best-sounding audio calls available, you should specify the DHY-04.

The DHY-04 has the following features:

• Fully automatic – adapts to varying line conditions and has automatic signal limiting.
• Fully adaptive echo cancellation to 127msec – default is 24msec.
• 70dB typical line balance rejection offering superb performance and crystal-clear audio.
• Front panel input and output gain controls.
• Front panel LED metering of receive and send signals.
• Built-in conferencing for 2 hybrids, allowing a single telco channel on a mixing desk to receive 2 calls.
• Integrated ring detector – automatic call answering after a pre-determined number of rings.
• Automatic call disconnection with K-break, line polarity reversal, and dial tone disconnect detection, defined by the country selection.
• Automatic ducking facility allows the talent to ‘shout-down’ or talk over a caller by reducing the caller’s signal gain if it exceeds a certain level.
• Local and remote line hold switching – calls can be remotely switched through a mixing console.
• Line hold/release button to control the line hold circuit, illuminating to indicate the line status and flashing to show ring status.
• Auto-sensing combined analogue or AES/EBU XLR input.
• AES/EBU sample rates up to 24 bit/96kHz accepted.
• Configurable analogue or AES/EBU XLR output.
• Ethernet port for remote configuration via web browser GUI.
• Remote dialling and line hold control via Ethernet.
• Ethernet network interface can generate SNMP Traps for SNMP management systems.
• DTMF dial tone recognition for reporter remote access – allows journalists to dial into the unit, which recognises a pre-programmed DTMF numeric password to automatically connect them on-air.
• Four front panel speed-dial buttons for dialling preset phone numbers.
• Front panel Redial button for redialling the last number.
• DTMF tone recognition allowing an opto-isolated GPI output to be triggered upon receipt of selected DTMF tones, e.g., for automatically starting a studio automation recorder to record a remote telephone interview.
• International operation with configurable settings for each country, providing line impedance and a simulation circuit tailored to specific regions.
• RS232 serial port for remote control of the TBU and DTMF tone dialling.
• Remote port distributes the remote line connect switch and tally output, a momentary/latch selector, and the DTMF detect output.
• Balanced mic/line input – 10k balanced input selectable for 0dBu clean feed line, or microphone level with adjustable gain.
• Balanced output – 0dBu low impedance balanced output, with output gain settings.
• Record output – the conferencing output can be set via a jumper to provide a mix of the caller and mic/line input signals for recording both sides of the telephone conversation.
• Line limiter, bandpass filter, and output noise gate with preset threshold, providing low-distortion audio.
• Built-in universal power supply between 90V AC and 250V AC, 47-63Hz, IEC mains input.
• ETSI approval compliant with European PTT specifications.

Sonifex Dialler The Sonifex Dialler is a Windows™ 7/8/10 application for simple connection and control of a single DHY-04/G hybrid.

To connect to a hybrid, simply enter or select the TCP/IP address in the drop-down list at the top left of the screen, then click the connect button.

The dialler includes a numeric keypad, speed dials, last number re-dial, Rx and Tx metering, and a status indicator. A signal strength indicator is available when connected to a hybrid with a GSM module.

Visit  Sonifex Software page to download the Sonifex Dialler.

ACMA Conformity The DHY-04, DHY-04S, and DHY-04T are fully compliant with ACMA requirements for use in Australia and New Zealand.