User's Manual

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Chapter 3 System Structure
LTE eNB System Description v2.0 34
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Figure 17. Cooling Structure of CDU
RRH
The RRH is designed to discharge heat effectively through natural convection
cooling without an additional cooling device.
External Interface
External Interfaces of LMD1
The following shows the interfaces of LMD1.
Figure 18. LMD1 External Interface
STS CLK
DBG
UDA
BH0 ETH LMT ALM
GNSS
BH1 BH2
CLK0 CLK1
Table 8. LMD1 Unit Description
SILK
Description
Quantity
Connector Type
BH0
BH 1G Copper
1 port
RJ-45
BH1
BH 1G Optic
1 port
SFP
BH2
BH 1G/10G Optic
1 port
SFP+
UDA
User Defined Alarm
1 port
CHAMP-68P
ALM
External Equipment Alarm
1 port
RJ-45
DBG
Debugger RS-232
1 port
USB
ETH
UDE 1G Copper
1 port
RJ-45
LMT
Local Maintenance Terminal
1 port
RJ-45
GNSS
GPS L1 interface
1 port
SMA (Female)
CLK0
Digital clock
1 port
Har link-10P
CLK1
Digital clock
1 port
Har link-10P
STS
CPU Status LED
1
LED PIPE
CLK
Clock Status LED
1
LED PIPE
BH1
BH1 Status LED
1
LED PIPE
FANM-C4A
Air Filter