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Clear-Com HB-702

2-Channel Flush-Mount Headset Station
Item #:HB-702 
Available: Special Order/Direct Ship

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
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Technical Specifications


Headset Microphone Input

Input Type : Dynamic
Input Impedance: >= 1K ohm
Mic Limiter Threshold: -2dBu ± 3dB
Mic Limiter Range: >= 15dB

Program Line Input
Input Impedance: >= 5K ohm

Headset Output
Load Impedance: >= 8 ohm
Output Impedance: <= 25 ohm
Output Limiter Threshold: +5dBu ± 3dB
Maximum Output Level before Distortion: >= 17dBu

Party-line Output
Off Noise: < -74dBu
Output Impedance: >10K ohm

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

Front Panel Controls & Indicators
(1) Sidetone control
(1) Talk button
(1) Call button
(1) Channel select switch
(1) Volume control

Environmental
32 - 122F (0 - 50šC)

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)