The conference unit integrates functions such as speaking, voting, sign-in, self-test, tea application service and two-way intercom. Adopt cardioid directional condenser microphone, built-in internal magnetic speaker, headphone jack, with microphone on indicator ring and touch button light switch indication. It has the function of voice control switch in VOICE mode. Built-in digital high-speed processor and high-fidelity audio circuit. The unit with LCD capacitive touch screen can be operated by touch. The display can show the identity and working status of the chairman unit / VIP unit / common unit. With a variety of working modes, with echo cancellation, howling suppression, background squelch and other functions.
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Model |
D7221/D7222 |
|
|
Structure type |
Desktop |
|
|
Gain limited effective frequency range (±3dB) |
A microphone in to B microphone out |
80Hz-7kHz |
|
Host line in to the unit |
20Hz-8kHz |
|
|
Microphone to host line output |
80Hz-9kHz |
|
|
Speaker power |
1.5W |
|
|
Static power |
<1W |
|
|
Maximum power consumption |
2W |
|
|
Signal to noise ratio |
>80dB |
|
|
Crosstalk attenuation |
>80dB |
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|
Harmonic distortion |
<0.5% |
|
|
Headphone output |
9dBu，8-32Ω，3.5mm |
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|
Working power |
Host power DC24V |
|
|
Unit interface |
8-pin DIN dedicated interface |
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|
Microphone |
Electret cardioid capacitive |
Electret cardioid capacitive |
|
Sensitivity |
-45dBV/pa |
|
|
input resistance |
2kΩ |
|
|
Equivalent noise |
20dB(SPL) |
|
|
Maximum sound pressure level |
125dB(THD<3%) |
|
|
Package dimensions |
560×215×165mm |
|
|
Machine size |
218×120×50mm |
|
|
Gross weight |
2.5kg |
|
|
net weight |
1kg |
|
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