INSTALLATION GUIDE FOR RA-7800
RA-7800 QI
Copyright - refer to title page
Page 26
ENU Status : 1-0-1
Cable Routing
Depending on equipment configuration, a variety of types of cables are connected to the MU and RU:
coaxial cables, optical fibers, power cable, communication cable, and commissioning cable. Where
applicable, ensure cables are properly routed and secured so that they are not damaged.
Manual Handling
During transportation and installation, take necessary handling precautions to avoid potential physical
injury to the installation personnel and the equipment.
3.2.1 REPEATER INSTALLATION CHECKLIST
Installation Location Requirement
Considerations
Working Space available
Ample space on 19” rack and mounting pole/wall
surface for unrestricted airflow and cable routing.
AC Mains
Power cord length is about 3m. Use a
dedicated AC breaker or fuse circuit, and
with good access to an earthing point.
AC 220: 220 ~240V
AC 110: 80 ~ 135V
There are a number of power supply options
for MU:
-48VDC
Power cord length is 3m with CSA of
2.5mm
2
Range: -36VDC to -72VDC.
The DC operating current should be
>10A.
Earth point
Earthing point/Safety ground within 2m.
EMC and interference
Do not locate near large transformers or motors that
may cause electromagnetic interference. Install
blanking off plates on the MU.
VSWR check
For the antennas, VSWR value to be < 1.5
Suitable operating environment
-20°to +40°C for MU and -33°to +55°C for RU.
Maximum 95% relative humidity.
Locate BTS signal derived at the coupler.
Typical RF input signal from BTS is from -15dBm to
5dBm, select the correct coupler at the BTS site and
to tune the ATT for optimal RF performance.
Confirm optical wavelength
For fiber sharing or single fiber working
Confirm optical fiber availability
FC/APC connector < 20km between MU and RU.
With fiber path loss observed.
Optical fiber handling
Maintain the minimum bending radius (> 30 mm)
Confirm RF cable availability
For connection to BTS and to remote antenna.
Table 5: Installation checklist
