Comrex DH20 Digital Phone Coupler

Comrex DH20 Digital Phone Coupler characteristic: ● Use DSP digital technology to ensure the best sound quality, easy to install, easy to operate ● Built-in speaker, audio balance input output ● Microphone or line input indicator: Caller output: XLR male ODBU standard, adjustable, balance, 50 ohm impedance; auxiliary output: XLR male ODBU standard, adjustable, balance, 50 ohm impedance; telephone line: RJII connector input: XLR mother head microphone / Line selection, select, -55 / ODBU standard, adjustable, balance, bridge, 20 ohm resistance; monitor output: 1/4 "stereo plug telephone transmission: telephone line level is -15dBU, with program input level ODBU is a reference standard; frequency response: 250Hz to 3.5kHz, ± 1dB; signal-to-noise ratio: >56dB distortion: <0.2% Phone Receive: The caller output level is 0 dBU, with the telephone line level is -15dbu Reference standard; frequency response: 250Hz to 3.5kHz, ± 1dB; signal to noise ratio: >56dB distortion: <0.2% ● Automatic gain control function keeps the caller level consistent ● Have caller level automatic attenuation function ● Automatic response / lane function ● Has remote control and status display function ● Adaptive MIX-Minus: Caller-to-Send for voltage requirements around the world; ● Segmentation: 50dB Standard Tail Time: 32 MilliseConds Power: 1ec Type Automatic Adjustment 100-240VAC, 2A, 50 / 60Hz, 30W ● Quality: 6.35 Ib / 2.88kg (net weight); ● 10.95 Ib / 4.97kg (packaging) ● Remote: DB25 female remote control program input: ODBU standard, adjustable, unbalanced, 20K ohm impedance remote caller and auxiliary output: ODBU standard, adjustable, non-balanced, 50 ohm impedance remote input: Remotely activate the following functions: Start, close, listen to the dumb status output: Use the ON and OFF status output port to remotely check the coupler status. ● Size (length × width × height): 17.125 "× 10.125" × 1.75 ", inch 43.6 × 25.7 × 4.44 cm

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