Working Principle - Huawei XMC-1 ODU Manual

RTN XMC ODU
Hardware Description
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1.3 Functions
The ODU, a microwave RF unit, has the function of frequency conversion and power
amplification. The ODU determines microwave frequencies of the transmitted and received
signals and is not affected by transmission service types such as the TDM Serivce and Ethernet
service.
The ODU supports the following features:
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1.4 Working Principles
This describes the working principles of the ODU. The working principles of different types of
ODUs are similar.
Working Principles
Figure 1-3
Issue Draft C (2014-06-20)
Item
al
Cut corner
Various channel spacing.
Various modulation formats.
Adaptive modulation (AM) function.
Adjustment of TX/RX frequencies through software.
Adjustment of TX power through software.
Temperature detection.
TX power detection.
RX power detection.
Received Signal Strength Indicator (RSSI) interface:
The ODU has an RSSI interface, which indicates the RX power in voltage.
Mute transmission.
Automatic Transmit Power Control (ATPC).
Remote Transmission Power Control (RTPC).
Automatic Gain Control (AGC) function of received signals:
The ODU automatically adjusts the channel gain according to the level of received signals.
shows the working principles of the ODU.
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In horizontal and vertical conditions, cables are inclined from
the cut corner to enhance waterproof reliability.
1 Outdoor Unit (ODU)
Description
6