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EQUIPMENT MANUAL FOR RD-9120
RD-9120 QE
Copyright - refer to title page
Page 22
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3.2.1 REPEATER INSTALLATION CHECKLIST
Installation Location Requirement
Considerations
Working Space available
Ample space on mounting pole or wall surface
Recommended space: 800mm x800mm x800mm
VAC power:
176 – 264 / 47 – 63Hz
Power cord length is no less than 2m
,
use a dedicated
AC breaker or fuse circuit, and with good access to an
earthing point.
-48VDC
Power cord length is no less than 1.5m with CSA of
2.5mm
2
Adjustable range: -72VDC to -36VDC.
The output current should be greater than 10A.
There are three
power supply options
at each installation
location:
+24VDC
Power cord length is no less than 1.5m with CSA of
2.5mm
2
Adjustable range: +22VDC to +30VDC.
The output current should be greater than 20A.
EMC and interference
Do not locate near large transformers or motors that may
cause electromagnetic interference.
Maintain distance from enclosure to DT, MT
antennas
Reduce of signal loss in feeder cable
Suitable operating environment
-40°C to +55°C and maximum 95% relative humidity.
Table 6: Repeater Installation checklist
3.2.2 ANTENNA INSTALLATION CONSIDERATION
Installation Location Requirement
Considerations
Locate donor antenna in a site to receive the
maximum signals from the desired BTS and to
shield the other signals at the same time.
Field intensity of receiving site: Typical mobile phone test
field intensity
≥
-70dBm
Locate the mobile antenna in the center of signal
coverage area
Isolation of donor antenna and mobile antenna
(I) must be larger than the maximum gain of the
repeater in operation
I > G
max
+ 15dB
Table 7: Antenna installation checklist