Guidelines For Selection Of Equipment Locations - BreezeCOM SU-A-2.4 Series Installation Manual

2.4 Guidelines for Selection of Equipment Locations

Select appropriate locations for the Outdoor unit and for the Indoor unit using
the following guidelines.
SU-RA
•
The SU-RA Outdoor unit should be mounted on a pole and should be
installed on a rooftop or a side-wall where a direct line of sight with the Base
Station antenna can be established. The higher the unit, the better the
achievable link quality.
•
The antenna (integrated on the front side of the SU-RA Outdoor unit) should
be directed towards the Base Station. The unit should be installed in a way
that allows optimal alignment towards the Base Station. The location should
also be selected to allow easy access to the unit for installation and testing.
SU-RE
•
The SU-RE outdoor unit should be installed as near as possible to its antenna.
•
The antenna should be mounted on a pole and should be installed on a roof
top or side wall where a direct line of site with the Base Station can be
established. The higher the antenna, the better the achievable link quality.
•
The antenna should be directed towards the Base Station. The antenna
should be installed in a way that allows optimum alignment towards the Base
Station. The location of the antenna should allow easy access for installation
and alignment.
SU-RA/RE
•
The SU-RA/RE is connected to the SU-NI by means of an IF cable carrying
signaling, control signals and power. The IF frequency is 440 MHz. The
maximum allowed attenuation of the IF cable connecting the Outdoor unit to
the Indoor unit is 15dB and the maximum allowed DC resistance (the sum of
the DC resistance of the inner and outer conductors) is 1.5 ohm. This allows
for cable length of up to 30m when using the standard RG 58 cable.
If longer cables are required, a cable with lower attenuation and/or DC
resistance should be used. Table 2-1 provides details regarding some popular
cables such as the RG 58 and RG 213. If the spectral environment is polluted
with noise in the 440 MHz band, it is recommended to use a higher quality
BreezeACCESS 2.4 Series 7 SU-A/E Subscriber Units Installation Manual
Basic Installation