network audio video intelligent controller


1. the audio specifications
Audio input channels: 12 balanced mic / line inputs, 8 balanced line inputs can be grouped as a stereo input.

Audio output channels: 8 balanced line;

 EIN:-128dBu (Rs = 150 Ohms),

Preamp Gain Range: 10dB ~ 65dB (mic)

-13dB ~ 44dB (Line input)
Input impedance  2K Ohms (microphone input)

: > 10K Ohms (Line) 

Input sensitivity

-61dBu (mic input)

 -40dBu (Line??Sensitivity
48V DC phantom power available

dynamic range: 105dB;

Frequency response: 20Hz ~ 20KHz

Sampling: 24bits/48KHz

32bits digital processing;

Maximum Input Level:
 +12 dBu (Mic input); +30 dBu (line input)

 Channel Isolation:> 70dB, 20Hz ~ 20KHz

 automatic volume control (AVC) 

Adaptive mixing valve (AVG)
Microphone mixing process (Automix)
Digital Room Correction (Digital Room Correction)

2. the video matrix
Input: 8 ways composite video: 1Vpp/75 Ohm, BNC connector.

Output: 8 ways composite video: 1Vpp/75 Ohm, BNC connector.

Video Bandwidth: 200MHz-3dB.

Nonlinear Distortion: <0.1%.

Video Crosstalk: <50dB @ 5MHz.

Video signal to noise ratio: 74dB.

Switching: Vertical interval.
3, the Scaler
Scaler input parallel input channels on the video matrix output video signal

format: NTSC / PAL / SECAM, auto-adjust

the scaled output resolution: 800x600, 1024x768, 1280x768, 1280x1024, refresh rate of 60Hz ~ 75Hz, software configuration;

The default output resolution is 1024x768 @ 60Hz.

 Brightness, contrast, color saturation, hue can be adjusted by software
4. centralized control
Processor: Independent ARM processor, processing speed  257 MPS
Serial port: 8 pcs to reuse programmable RS232/IR infrared port, baud rate, DB9 connector.

 Infrared Remote Control: Infrared remote control can controlinfrared remote control device by any infrared remote control codes.

Strong cutting interface: 2-way interface to dry out the switching point mute
 

5. system interface
Control: according to user definable management system related agreements, to support Web access

expand: the host can be directly connected to a station extension interface, realize operation of all control functions.

Amplifier Interface: directly connect with NV-C3004, NV-C3008 multi-channel digital amplifier dock by Navis-Net;and manage NV-C3004, NV-C3008 amplifier.

6 network switches
Used for system programming and control of built-in 4-port switch, RJ45 port with 10/100M Ethernet standard.

7 other system functional requirements
Host interface enables cascading extensions by extending control of 48 microphone,

microphone input for each channel can control the following:

Gain Control: Optional two line or microphone input mode,

the noise gate: automatic or manual-10dB ~-80dB

adjustable Gate Attenuation Control:-20dB ~-100dB adjustable, default value:-40dB

Channel priority: 0dB ~ 20dB adjustable

the Last / Default On function (the last one open mic / open the default microphone) microphone hold time can be set: 10ms ~ 10s

NOMA function

output independent of mixing: independent mixing control the output and stereo microphone inputs .

Each microphone channel independent compression,

compression hreshold:-60dB ~ +20 dB adjustable

compression ratio: 1 ~ 10 adjustable

start time: 1ms ~ 1s adjustable

 recovery time: 10ms ~ 10s adjustable.

Equalization automatical function

10 Parametric EQ automatic

feedback suppressor

10 feedback inhibition, fixed / variable can be set

 through the RS-232 remote control to put camera and microphone to focus appointed positioning target.

 Amplifier can be adjusted automatically through the network volume control. Programming through RS-232 to control others devices in the same system and other AV peripherals.