21
Chapter 4 System Connection
4.1 Summary
H-9500 series Fully Digital Conference System has a simple but efficient structure. It’s installation is simple,
quick and does not need special training. Daisy-chain connection is adopted between conference unit as well
as to CMU via Ethernet cable.
In this chapter, the connections of H-9500 series Fully Digital Conference System are introduced by
diagrams.
4.1.1 Connection principles
The Conference Main Unit forms the core of the entire conference system. It provides power supply to all
microphone units and serves as key component to link system hardware to software control.
Since microphone units are powered by the CMU, thus, the total number of microphone units in any
installation is limited by the maximum power handling capacity and control capacity of the H-9500M CMU. In
one system, up to 320 units can be connected by adding H-9500E extension unit.
The CMU can work alone to achieve basic control functions, when through software control, more powerful
and versatile management and control functions are accessible.
4.1.2 Connection cables
All microphone units equipped with a 2 m FTP Cat6 cable, when the microphones are connected one by one,
connect first unit to the outlet socket (Ethernet interface) of the CMU, and then connect this microphone to
the next one via any Ethernet interface on the microphone- thus microphone units are daisy-chain connected.
FTP Cat6 cable can be used between microphone units and the CMU.
The last microphone unit of each Ethernet outputs must connect one terminal unit.
4.1.3 Extension cable
If the distance between the CMU and the microphone unit or one microphone unit to another one exceeds 2
meter, an extension cable is needed. Due to the voltage drop in the extension cable caused by the ohmic
resistance, the number of microphone units available for each outlet connector will be reduced according to
the length of the cable connected. The relationship is described as below.
The extension cable connected between the CMU and the first microphone unit carries the current of all
subsequent units and influences at the same time the maximum possible load of the CMU.
Type No
The extension cable length between the CMU/Extension unit and the first microphone
connected to the outlet Ethernet interface
10 m
15 m
20 m
25 m
30 m
35 m
40 m
45 m
50 m
H-9200 series
16
14
12
11
10
9
8
7
7
H-9510 series
15
13
11
10
9
8
7
6
6
4.2 Connection between the CMU and the microphone units
All microphone units of H-9500 system adopt FTP Cat6 Ethernet cable and are daisy-chained, which makes
the installation handy and effortless.
Connect the first microphone to the outlet port of the CMU (both of them are Ethernet interface) via FTP Cat6
Ethernet cable with RJ45 connector, and then connect the first microphone to the second one with the same
type cable with RJ45 connector. Proceed one by one in a series configuration. The FTP Cat6 Ethernet
extension cables can be used between microphone units and the CMU.
