Clear-com HB-704 4-Channel Headset Station
Clear-com HB-704 is a four-channel-selectable,
full-duplex headset station, able to be mounted into a wall or other
surface. These headset stations are ideal for installation in theatrical,
performance, broadcast, and industrial facilities - wherever a
multi-channel, full-duplex headset communications panel is desired.
• Selectable two- or four-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: >= 1K
• Mic Limiter Threshold: -2dBu ± 3dB
• Mic Limiter Range: >= 15dB
Program Line Input
• Input Impedance: >= 5K
Headset Output
• Load Impedance: >= 8
• Output Impedance: <= 25
•
Output Limiter Threshold: +5dBu ± 3dB
• Maximum Output Level
before Distortion: >= 17dBu
Partyline Output
• Off Noise: < -74dBu
• Output Impedance: >10K
Partyline Input
• Crosstalk: < -60dB
•
Max level before Clipping: >= 12dBu
Frequency Response
• Headset Mic - Partyline: 300 - 15kHz ± 3dB
• Partyline -
Headset Out: 300 - 15kHz ± 3dB
Max Distortion
• Headset Mic - Partyline: <= 0.5%
• Partyline - Headset Out:
<= 0.2%
Noise
• Headset Mic - Partyline:
< -70dBu
Max Gain
• Headset Mic -
Partyline: 41dB ± 2dB
• Partyline - Headset Out: >= 34dB
Power
• Input Voltage Range: 20-30V DC
•
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
Environmental
• 32 - 122°F (0 - 50°C)
Dimensions
• 4.5 x 4.6 1.75in (HxWxD)
(114 x 117 x 44mm)
Weight
• 0.46lbs
(0.21kg)
