Clear-Com HB-702 Encore 2-Channel Flush-Mount Headset Station

HB-702 is a selectable two-channel wall or console-mounted headset station. Microprocessor-controlled logic and switching, with momentary/latching talk button. Visual call signaling. Optional 4-wire and TW daughter boards.

The unit is mounts in a standard U.S. two-gang outlet box. The stations offer excellent speech intelligibility even in high noise environments. Microprocessor-controlled logic plus a set of internal and external controls allow the features of these stations to be tailored to the needs of the user. Electronic switching for the talk button, blue-color LED (on) or amber-color (off), permits momentary or latching operation. A Remote Mic Kill (RMK) signal on the intercom line will turn off the talk function if it is accidentally left on.

2-Channel Select Flush-Mount Headset Station (4.5" X 4.5") Mounts in Console or Standart 2-Gang Electrical Box. HB-702 is a selectable two-channel wall or console-mounted headset station. Microprocessor-controlled logic and switching, with momentary/latching talk button. Visual call signaling. Optional 4-wire and TW daughter boards.

Features:

Selectable two-channel full-duplex communication
Microprocessor controlled logic and switching
Momentary/latching talk switch with LED
Visual call signaling with bright LED indicator
Headset connector with volume control and sidetone adjust
Use with optional TW or 4-wire circuit boards
Easy installation and connection

Headset Microphone Input
Input Type	Dynamic
Input Impedance	>= 1Kohms
Mic Limiter Threshold	-2dBu ± 3dB
Mic Limiter Range	>= 15dB
Program Line Input
Input Impedance	>= 5Kohms
Headset Output
Load Impedance	>= 8ohms
Output Impedance	<= 25ohms
Output Limiter Threshold	+5dBu ± 3dB
Maximum Output Level before Distortion	>= 17dBu
Party-line Output
Off Noise	< -74dBu
Output Impedance	>10Kohms
Party-line Input
Crosstalk	< -60dB
Max level before Clipping	>= 12dBu
Frequency Response
Headset Mic - Party-line	300 - 15KHz ± 3dB
Party-line - Headset Out	300 - 15KHz ± 3dB
Max Distortion
Headset Mic - Party-line	<= 0.5%
Party-line - Headset Out	<= 0.2%
Noise
Headset Mic - Party-line	< -70dBu
Max Gain
Headset Mic - Party-line	41dB ± 2dB
Party-line - Headset Out	>= 34dB
Power
Input Voltage Range	20-30 VDC
Input Current (Idle)	<= 50mA
Input Current (Max)	<=100mA
Internal Adjustments and Connections
Intercom Line	Seven terminal connector
Option Switches	Two DIP switches
Option Board Jumper	Two sets of options jumpers
Front Panel Connectors
Headset	(1) XLR-4M
Dimensions	4.625 in. W x 4.5 in. H x 1.75 in. D (117 mm x 114 mm x 44 mm)
Weight	0.46 lbs. (0.21 Kg)

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