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CFIP PhoeniX C Series TDM/IP Split Mount System Technical Description and Configuration Guide
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Rev. 1.0
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© SAF Tehnika JSC 2013
Figure 12: Block diagram of the Outdoor Unit
Outdoor unit is an integral part of the antenna system. ODU is mounted behind the parabolic antenna.
In dependence on requested application distances there are available antennas with diameters of 30,
60, 90, 99, 120, 180, 240 and 300 cm.
ODU for license frequency bands
Outdoor units in the version for the license frequency bands meet the international standards and
requirements for this type of equipment (especially ETSI EN 302 217). The modulation scheme is
adjustable from QPSK to 256 QAM, the output power is in the range between 0 to 30 dBm depending
on the selected frequency band and the type of modulation scheme. A maximum transmission date
rate is 365 Mbps in 1+0 mode.
For technical reasons, each frequency band is covered by more (three or four) pairs of microwave
units, where one pair is tunable in the low portion of the band (in low sub-band), the second/third
pair in the middle portion of the band (in middle sub-band) and the last pair in the high portion of the
band (in high sub-band). Each pair then consists of two radio units (ODU), where one unit transmits in
the upper part and the second unit in the bottom part of the given sub-band, the frequency
separation is then known as the duplex spacing (Tx/Rx).
In consequence of the statement above the ODU, that is tunable in lower part of the particular sub-
band of given frequency, can work only with ODU tunable in higher part of the same sub-band of the
same frequency.
There are only two connectors accessible on the ODU, N connector for connecting with the IDU via
coaxial cable and BNC connector for measurement of Received Signal Strength (RSSI). Next to the BNC
connector is located grounding screw.