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Telex
http://www.telex.com

ADHB-4

Advanced Digital Headset Box

  • Ethernet Communication
  • Six (6) Audio Channels
  • One (1) Dual Channel 1/4” Headset Jack
  • One (1) XLR Connector to Accept any Low Impedance Microphone
  • One (1) Desk Mic Jack
  • One (1) Phone Jack
  • One (1) NENA I/O Jack with Offhook Detection
  • Separate Headset Volume Control Knobs for Select
  • Supports up to Three (3) pairs of speakers
  • Any standard amplified speaker
  • LED Power and PTT Indicator
  • 12VDC Operation
  • Two (2) Headset Jacks to Support Two (2) Remote Headset Boxes
  • ADHB-4 provides power to an RHB
  • Dual channel 1/4” headset jack
  • Volume control knob
  • Support both Select and Unselect in either ear.
  • LED for power/PTT indication
  • Programmable Gain Control
  • Programmed Softkeys
  • Footswitch Inputs for PTT and Monitor
  • Two Relays with Form C contacts
  • AUX Inputs are DC Isolated
  • Color LCD Type Display
  • Network clock
  • Available speaker indication
  • PTT indicator
  • Active inputs indicator
  • IP Address
  • PTT Indicator for RHB 1 and RHB 2
  • Adjustable contrast for the backlight
  • Connectivity indicator for headset
Audio Distortion 2% THD Maximum
Audio Frequency Response ±1.5dB, 300 to 3000Hz
Color Silver
Depth 8.25" (209.5 mm)
Display Type Backlit Color LCD
Ethernet Speed 10 BaseT or 100 BaseTX
Form Factor Rackmount
Height 2" (50.8 mm)
Microphone Jack XLR connector or RJ-11 jack
NENA Input/Output Impedance 600 Ohms nominal
Operating Altitude -500 to 13,000 ft. m
Operating Humidity 100 % Non-condensing
Operating Temperature 0° to 55°C (32° to 131°F) °C
Power Requirements +12 to +16VDC, semi-regulated, 1.25A
Relay Contact Ratings 1A at 125VAC - Form C Contacts
Speaker Stereo jacks connect to amplified PC Speaker pair jacks. Three (3)
Storage Humidity 100 % Non-condensing
Storage Temperature 28.8° to 48.8°C (-20° to 120°F) °C
USB Version 2.0
Volume Control Knob
Width 11" (279.4 mm)

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