User's Manual

Intelibs, Inc. Proprietary and Confidential Page 18
18
3 Installation
3.1 Installation Requirements
Before and during installation, the following should be carefully verified in order to avoid any
problem:
 Faulty Cabling/Connectors: Fiber cable and connectors must be verified prior to plugging
into the RHU
 Dirty Connectors and ports
 Faulty Radio Hub Unit (RHU) components
 RF source equipment issue
 External RF Interface problem such as antenna port
The following guidelines are required when the RHU is installed on the 19” rack of Headend room:
Bandwidth
Any 30MHz BW in each band
Channel filter BW
Combination of 1.25MHz BW
@ Except 850MHz band
Input level
DL
-60 ~ -30dBm/total
@ each band total input level
UL
0dBm/total max.
@ from SRU/BEU
Output level
DL
0dBm/total
@ optic input level
UL
20dBm/total
@ Link ANT output level
RF Gain
DL
45dB typ. by 1dB step
@ 10 ~ 40dB gain control
UL
45dB typ. by 1dB step
@ 10 ~ 40dB gain control
Gain Flatness
2dBp-p
@ Any 30MHz BW
Inband gain difference
3dB max.
@ all band width of each band
Noise Figure
DL
Less than 6dB
@ 40dB gain of DL
Noise level
UL
Less than -88dBm/Hz
@ RHU UL 45dB gain
Optical wavelength
DL 1310nm / UL 1550nm
Available Optic Loss
5dBo max.
@ RHU – RU
Out of band rejection
More than 40dBc
More than 100dBc
More than 100dBc
@ ±1.25MHz from band edge
@ out of band
@ DL/UL Isolation
RF port VSWR
1.5: 1 max.
@ All of RF Port
Frequency Stability
±0.02 ppm
System Delay
3.0usec max.
Isolation Margin detect
0dB ~ 20dB Margin
Fiber Connector
LC/UPC
RF connector
ANT Port: 4.3-10 Female
Power consumption
100W max. for 4-Band RHU
80W max. for 2-Band &
@ 20dBm output of UL HPA
DC power
PoE/AC120V
AC120V only
@ 2-Band Mobile and 2-GPS
@ 4-Band Mobile