Clear-Com HB-704
MPN #HB-704
4-Channel-Select Flush-Mount Headset Station (4.5" X 4.5")
The HB-704 is a four-channel-selectable, full-duplex headset station, able to be mounted into a wall or other surface.
Optional 4-wire and TW daughter boards.
Features
Momentary/Latching Talk switch with LEDMicroprocessor controlled logic and switchingVisual call signalingHeadset connector with volume control and sidetone adjustOptional 4-wire or TW daughter boards for flexibilityMountable into a standard US two-gang outlet box
Specifications
Headset Microphone Input
Input Type : DynamicInput Impedance: >= 1KMic Limiter Threshold: -2dBu ± 3dBMic Limiter Range: >= 15dB
Program Line Input
Input Impedance: >= 5K
Headset Output
Load Impedance: >= 8Output Impedance: <= 25Output Limiter Threshold: +5dBu ± 3dBMaximum Output Level before Distortion: >= 17dBu
Party-line Output
Off Noise: < -74dBuOutput Impedance: >10K
Party-line Input
Crosstalk: < -60dBMax level before Clipping: >= 12dBu
Frequency Response
Headset Mic - Party-line: 300 - 15KHz ± 3dBParty-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 ± 2dBParty-line - Headset Out: >= 34dB
Power
Input Voltage Range: 20-30 VDCInput Current (Idle): <= 50mAInput Current (Max): <=100mA
Internal Adjustments and Connections
Intercom Line: Seven terminal connectorOption Switches: Two DIP switchesOption 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 - 50C)
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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