Digital Network Conference System  YC838MR --- Central Control Unit 

Overviews 

The multi-functional digital conference system employs advanced digital control technology, providing easy and effortless

management whether used for informal small meetings or large international conferences. The system's functionalities

include venue design, microphone management, automatic camera tracking, control management, conference recording,

and more.

• Supports ring backup connections.

• Equipped with built-in environmental noise canceller, digital equalization circuits, preventing feedback.

• CAT 6-core DIN cables for microphone connections, effectively preventing electromagnetic interference on the lines.

• Dual-machine hot backup mode functionality, allowing system backup.

• Equipped with a 4.3-inch true color touchscreen and an embedded Linux system with a Chinese operating interface.

• Allows touchscreen settings for conference modes, system volume adjustment, microphone management, unit

• numbering, camera parameters, video tracking settings, and ring light settings, among other functions.

• Conference modes include free mode, rotation mode, restriction mode, application mode, voice control mode, PTT mode,

VIP mode, and timing mode.

• Supports 5V-24V fire linkage alarm interfaces for expanded functionality, such as connecting to fire alarm ports.

• USB recording function for conferences.

Offers 1-way expansion RS232 port support for our hybrid switching matrix

Supports control of up to 512 camera positions for automatic tracking.

Supports two camera protocols: Pelco-D/P and VISCA

• Supports three camera control interfaces: RS232, RS422, and Rs485.

• The main unit can centrally adjust the output gain of attendance units and set audio adjustment locks.

• Features DATA network control interface, extending network cables up to 1000 meters for conference management.

• Offers live "hot-swappable" functionality for enhanced system safety.

Includes request service feature for flexible and convenient conferencing.

Provides two sets of audio input interfaces for connecting other audio devices, offering users more options.

Support 120 pcs microphone with one CCU .with extend CCU unit support up to 4096 pcs microphone units.

• Features "hand-in-hand" and loop connections for easy installation and maintenance.

• Support PC control commands for management software and central control devices.

• When paired with a telephone coupler, enables remote telephone conferences.

• When paired with network conferencing software and video conferencing terminals, enables remote video conferencing.

Specifications 

Installation: 19-inch Standard 

Rack Mount Dimensions (mm): 485*100*355 (W×H×D) 

Net Weight (kg): 11.8 

Microphone Capacity: Video ≤250; Discussion ≤4096 

Frequency Response: 100Hz – 15kHz 

SNR: >96dB 

Total Harmonic Distortion: 0.1% @ 1kHz 

Power : AC220V-240V/ 50Hz-60Hz

Audio Output: 

RCA*2 Unbalanced (REC Recording Output) 

RCA*2 Unbalanced (LINE Mixed Output) 

XLR Balanced (BAL OUT Mixed Output)

Audio Input: RCA*4 Unbalanced (AUX IN)

Control Interfaces: EXT CON Ethernet Port, Data Interface 

Audio Network Interface: LAN BOX Data Interface

Maximum Power Consumption: 350W 

Connection Methods: CAT 6-core Cable

Computer Control Interface: RS-232 (PC) 

Camera Control Interface: RS232/RS422/RS485

Video Switching Interface: 4 in 2 out RCA connectors, 4 in 4 out HDMI connectors