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Chapter 2 Conference Main Unit
2.1 Conference Main Units
The Conference Main Unit forms the core of the entire conference system. It provides power supply to all
contribution unit and serves as key component to link system hardware to software control. The CMU adopt
DSP techniques such as feedback suppression, noise cancellation, automatic gain, and digital equalization.
It’s flexible and reliable for any conference of mini/medium/large meeting.
Product Include:
H-9500M
Fully Digital Conference System Main Unit (Discuss, recording, video tracking, voting, monitoring, 4.3 inch
TFT touch display, Ethernet interface)
H-9500E
Fully Digital Conference System Extension Unit
2.1.1 Main Features and Specifications of CMU
a) FTP Cat6 cables are introduced for data transmission and power supply, supporting message
transmission with a fast internet service 100M. Thus, audio signals could be delivered perfectly in a long
distance.
b) A sampling frequency of 48kHZ is supported by the system.
c) In order to ensure a clear, highly sensitive, and perfect sound quality, CMU built-in high-performance dual-
core CPU, 32 bit high-speed DSP technologies, feedback suppression, noise cancellation, automatic gain,
and digital equalization are all available.
d) TCP (transmission control protocol) and IP (internet protocol) are all available, enabling a reliable and safe
management.
e) Built-in video tracking control and ballot processor, high definition switching matrix are available for auto
video tracking with HD video matrix.
f) The CMU owns a built-in USB, allowing the realizing of recording and monitoring.
g) Audio could be outputted in balanced or unbalanced way.
h) Different kinds of interfaces, like, Ethernet, RS422 and RS232, could meet requirements towards different
devices.
i) Three modes are available, including REQUEST(1-4),LIMIT (1-4), and FIFO (1-4). They all support speech
timing function.
j) Multiple conference functions could be realized when CMU is connected to computer.
k) Power Input: 230VAC 50/60Hz
l) Static Power: 12W
m) Maximum Output Power: 300W
n) Frequency Response: 20Hz-20KHz
o) S/N: > 80dB
p) T.H.D: <0.05%
q) Dimensions: 484x 88 x 360 mm, 2 U rack 19”
