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.webp "Desktop Digital Conference System Chairman Unit")
.webp "Desktop Digital Conference System Chairman Unit")
.webp "Desktop Digital Conference System Chairman Unit")
Integrates multiple conference functions in one unit, including discussion and sign-in.
Comes with dedicated high-density cables, featuring one RJ45 plug and one RJ45 socket for daisy-chain connection between units.
Features an integrated square-column microphone stem with cardioid electret condenser microphone and dual-color indicator ring (red/green).
Excellent resistance to mobile phone interference.
3.5 mm stereo headphone jack for monitoring other units.
Independent adjustment of microphone volume and headphone monitoring volume, with support for 12-band EQ via control software.
Supports microphone noise reduction and automatic gain control (AGC), configurable through control software.
Supports main/backup switching: automatically switches to the backup unit if the main unit fails, enhancing system reliability.
Each conference unit has a unique ID number.
Supports camera auto-tracking when used with a conference host or control software.
Self-test function when connected to control host, including testing of buttons, microphones, and LED indicators.
Passive device powered by system host or PoE switch, with input voltage of +48V.
Chairman unit supports priority function and podium mode via host settings.
Chairman unit can approve delegate speaking requests.
Chairman unit can be activated freely without limitation on the number of active microphones and has full control over conference order.
Chairman unit connection position is unrestricted.
The D7157 Desktop Discussion Chairman Unit is a high-performance digital conference terminal designed for discussion and sign-in functions. Equipped with a cardioid condenser microphone, it delivers excellent sound pickup and strong resistance to interference, ensuring clear and stable audio transmission. The unit supports headphone monitoring, independent volume control, and software-based EQ adjustment, along with system self-test and main/backup switching functions. The chairman unit provides priority control and speaking management, making it suitable for various mid-to-high-end conference applications.
Model | D7157/D7158 | |
Structure Type | Desktop | |
Effective Frequency Range with Gain Limit (±3dB) | Unit A to Unit B | 80Hz–12kHz |
Host Line to Unit | 80Hz–16kHz | |
Unit to Host Line Output | 80Hz–16kHz | |
Static Power Consumption | <2W | |
Maximum Power Consumption | <2W | |
Harmonic Distortion | <0.3% | |
Headphone Output | 9dBu, 8–32Ω, 3.5mm | |
Operating Power | Host +48V or +48V PoE | |
Unit Interface | Network Interface | |
Microphone | Microphone Type | Cardioid electret condenser |
Input Sensitivity | -42 ±2 dBV/Pa | |
Frequency Response | 50Hz–20KHz | |
Maximum SPL | 125 dB | |
Product Dimensions (W × D × H) | 142 × 139 × 65 mm | |
Package Dimensions | 385 × 345 × 181 mm | |
Net Weight | 0.78 kg | |
Gross Weight | 2.4 kg | |
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