The digital DHY-03 telephone hybrid isone ofthe best performing digital hybrids in the world, with simply stunning line balance rejection figures.
- Fully automatic - adapts to varying line conditions and has automatic signal limiting.
- Fully adaptive echo cancellation to 127msec - default is 24msec.
- 76dB 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, so that a single telco channel on a mixing desk can receive 2 calls.
- Integrated ring detector - automatic call answering after a pre-determined number of rings.
- Automatic call disconnection. Fitted 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 gain of the caller's signal if it goes above a certain level.
- Local and remote line hold switching - calls can be remotely switched through a mixing console.
- Line hold/release button to control line hold circuit, illuminates to indicate the status of the line and flashes to show ring status.
- DTMF tone recognition allowing a opto-isolated GPI output to be made on receipt of selected DTMF tones, e.g. for starting a studio automation recorder automatically to record a remote telephone interview.
- International operation with built-in configurable settings for each country. Country selection allows the unit to provide line impedance and a simulation circuit to match the country.
- RS232 serial port for remote control of the TBU, DTMF tone dialling and firmware upgrades to add new country settings.
- Remote port distributes the remote line connect switch and tally output, a momentary/latch selector and the DTMF detect output.
- The remote line connect switch can be either momentary or latching in its action.
- 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 give 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.
- Audio Specification
- Input Impedance - Line Mode (Clean Feed): 10k ohms balanced 0dB
- Input Impedance - Conferencing: 10k ohms balanced 0dB (not for DHY-03EC)
- Input Impedance - Microphone Mode: 2k ohms balanced (not for DHY-03EC)
- Input Level Gain Range: +6dB, 0dB, and -6dB adjusted by 3-position front panel switch,
- +10dB jumper
- Microphone Level Gain Preset: From 65dB to 35dB (not for DHY-03EC)
- Maximum Input Levels: Line +26dBu, mic -24dBu
- Clean Feed Limiting Input: -4dBu for CTR21 setting, other values available *
- Bandwidth to Telephone Line: 250Hz - 4kHz, -3dB ref 1kHz
- Telephone Line Impedance: 600 ohms, 900 ohms plus 14 other complex impedance circuits *
- Output Impedance - Line Out: 50 ohms balanced floating 0dBu
- Output Impedance - Conference/Record: 50 ohms balanced floating 0dBu
- Output Level Gain Range: +6db, 0dB, and -6dB adjusted by 3-position front panel switch
- Rejection Ratio: 76dB on tones or complex waveforms, reference peak level of 0dB
- Ring Detector Sensitivity: Off, 2, 4 or 6 rings
- Power to DHY-03, S & T Universal 12 ohms power supply: 90 to 250V AC; 47-63Hz; fused 1A
- Power to DHY-03EC +/-15 V DC @ 160mA per rail or regulated +5V DC @ 600mA
- * These values are dependent on the actual country setting selected on the DHY-03
- Connections
- Mic/Line Input: XLR 3 pin female, with push-button mic/line selection
- Line Output: XLR 3 pin male
- Telephone Line: RJ11 6/4 socket
- Telephone Handset/Instrument: RJ11 6/4 socket
- Conferencing or Record Audio: RJ45 socket
- Remotes: 9-way D-type socket
- RS232 Serial: 9-way D-type socket
- Power: IEC mains (CEE22)
- Connections for Eurocard 64 pin DIN 41612 male (plug)
- Each DHY-03, S & T unit is supplied with 1 x RJ11 to RJ11 telephone line lead, 1 x RJ11 to BT plug telephone line lead, 1 x BT handset socket to RJ11 plug adapter, IEC mains lead fitted with moulded mains plug, handbook and warranty card.
- Physical Specification
- Order Code: DHY-03
- Description: Automatic digital TBU, free standing
- Height: 4.5cm 1.8"
- Width: 21.8cm 8.6"
- Depth: 17.5cm 6.9"
- Total Net Weight: 1.4kg 3lbs
- Total Gross Weight: 2.2kg 4.8lbs