Gentner DH20 Communication Telephone Interface
The DH20 is a high quality single-line and dual-line telephone interface, designed to interconnect a standard telephone line and your audio equipment, allowing you the ability to send audio to and receive audio from a connected telephone line. The DH20 and DH22 are ideal when the very best audio quality is required for talk shows, news feeds, production, recording studios, and internet applications.
Features:
- Crystal clear, consistent audio quality
- Continual adaptation to telephone line conditions
- Selectable automatic mix-minus and caller automatic gain control (AGC)
- 1W power amp with volume control on front-panel
- Selectable mic/line level input
- On/Off control via front panel and rear panel remote connection
- Analog receive filter for telephone line noise reduction
- Selectable caller control (ducking)
- Balanced inputs and outputs
- Auxiliary output for recording
- Simple installation and operation
- Adjustable send/caller audio level control
- Selectable single-ring auto-answer and auto-disconnect
Specifications:
- Caller Output: XLR male 0dBu nominal, adjustable, balanced, 50 Ohm impedance
- Aux Output: XLR male 0dBu nominal, adjustable, balanced, 50 Ohm impedance
- Telco Line:
- RJ-11 connector POTS (plain old telephone service) line or analog extension from a PBX or dry line (no DC offset voltage).
- A-Lead supervision provided
- Telco Set:
- RJ-11 connector
- A-Lead supervision provided
- Telephone Transmit: Nominal send input of 0 dBu referenced to -15 dBu onto the telephone line.
- Frequency Response: 250 Hz to 3.5 kHz, +/-1dB
- Signal to noise ratio: >56 dB
- Distortion: <0.2%25
- Telephone Receive: Nominal telephone line level of -15 dBu referenced to caller output of 0 dBu
- Frequency Response: 250 Hz to 3.5 kHz, +/-1 dB
- Signal to noise ratio: >56 dB
- Distortion: <0.2%25
- Remote: DB-25 Female
- Remote Send Input: 0dBu nominal, adjustable, unbalanced, 20k Ohm impedance
- Remote Caller and Aux Output: 0dBu nominal, adjustable, unbalanced, 50 Ohm impedance
- Control Inputs: Remotely activate any of the following functions with a switch closure to ground: On, Off, and Monitor Mute
- Status Outputs: Remotely check the status of the hybrid using the On and Off status outputs. Status outputs are open collector outputs rated at 30V DC and 40mA maximum
- Monitor Output: Tip=+phase, Ring=ground, Sleeve=ground, 1W output into an 8 Ohm load
- Send Input: XLR female Mic/Line selectable, -55/0 dBu nominal, adjustable, balanced, bridging, 20k Ohm impedance
- Caller-to-Send separation: 50 dB nominal
- Tail time: 32 milliseconds
- Operating Temperature: 32-100Deg F/0-38Deg C
- Humidity: 0-80 percent
- Controls: On/Off Buttons
- Volume: Up/Down Buttons
- Status LEDS:
- On Status, Off Status
- Send Audio Presence
- Caller Audio Presence
- Power: IEC Type Auto Adjusting 100-240VAC, 2A, 50/60Hz, 30W. Power cable not included.
- Send-to-Caller separation: 55dB nominal
- Tail time: 32 milliseconds
- Dimensions (LxDxH):
- 17.125 x 10.125 x 1.75 inches
- 43.6 x 25.7 x 4.44 cm
- Weight:
- 6.35 lbs./2.88 kg (dry)
- 10.95 lbs./4.97 kg (shipping)
- Caller Output: XLR male 0dBu nominal, adjustable, balanced, 50 Ohm impedance
- Aux Output: XLR male 0dBu nominal, adjustable, balanced, 50 Ohm impedance
- Telco Line:
- RJ-11 connector POTS (plain old telephone service) line or analog extension from a PBX or dry line (no DC offset voltage).
- A-Lead supervision provided
- Telco Set:
- RJ-11 connector
- A-Lead supervision provided
- Telephone Transmit: Nominal send input of 0 dBu referenced to -15 dBu onto the telephone line.
- Frequency Response: 250 Hz to 3.5 kHz, +/-1dB
- Signal to noise ratio: >56 dB
- Distortion: <0.2%25
- Telephone Receive: Nominal telephone line level of -15 dBu referenced to caller output of 0 dBu
- Frequency Response: 250 Hz to 3.5 kHz, +/-1 dB
- Signal to noise ratio: >56 dB
- Distortion: <0.2%25
- Remote: DB-25 Female
- Remote Send Input: 0dBu nominal, adjustable, unbalanced, 20k Ohm impedance
- Remote Caller and Aux Output: 0dBu nominal, adjustable, unbalanced, 50 Ohm impedance
- Control Inputs: Remotely activate any of the following functions with a switch closure to ground: On, Off, and Monitor Mute
- Status Outputs: Remotely check the status of the hybrid using the On and Off status outputs. Status outputs are open collector outputs rated at 30V DC and 40mA maximum
- Monitor Output: Tip=+phase, Ring=ground, Sleeve=ground, 1W output into an 8 Ohm load
- Send Input: XLR female Mic/Line selectable, -55/0 dBu nominal, adjustable, balanced, bridging, 20k Ohm impedance
- Caller-to-Send separation: 50 dB nominal
- Tail time: 32 milliseconds
- Operating Temperature: 32-100Deg F/0-38Deg C
- Humidity: 0-80 percent
- Controls: On/Off Buttons
- Volume: Up/Down Buttons
- Status LEDS:
- On Status, Off Status
- Send Audio Presence
- Caller Audio Presence
- Power: IEC Type Auto Adjusting 100-240VAC, 2A, 50/60Hz, 30W. Power cable not included.
- Send-to-Caller separation: 55dB nominal
- Tail time: 32 milliseconds
- Dimensions (LxDxH):
- 17.125 x 10.125 x 1.75 inches
- 43.6 x 25.7 x 4.44 cm
- Weight:
- 6.35 lbs./2.88 kg (dry)
- 10.95 lbs./4.97 kg (shipping)
