Ovrrbu-bts. Pdf
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- Điều hướng trang này:
- 1.16.3.2 Base Transceiver Station
- 1.16.3.3 Controls and Indicators
- 1.16.3.4 On/Off switch
- 1.16.3.6 The Customer Premises Equipment (CPE)
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1/30/00 BASE TRANSCEIVER STATION Release 1.00 2 - 29 1.16.3 Monitoring CPE Activities The following gives information on activities generated by the CPE. 1.16.3.1 Radio Base Unit Antenna system The RBU is capable of operation with a family of omni or directional antennas to support a particular requirement (see table 3.2.1.6-1). 1.16.3.2 Base Transceiver Station The Base Transceiver Station configuration is designed for deployment into an environment with marginal environmental control (e.g., shelter). The unit is completely modular allowing for the easy removal and replacement of the functional modules. Cable I/O is accessible from the front of the unit, except for the antenna cable, which is accessible from the top. All FRUs are hot swappable. 1.16.3.3 Controls and Indicators Controls and indicators for the Radio Base Unit are located on the front panel of the unit. To the extent possible, a series of LED’s starting from the power distribution module visually directs the operator from cabinet to drawer to failing replaceable module. 1.16.3.4 On/Off switch A system power on/off switch (circuit breaker) is provided to protect a circuit overload condition and is configured to prevent accidental shut down. 1.16.3.5 Base Transceiver Station Alarms The Base Transceiver Station has alarms indicating “critical” level conditions regarding the Radio Port equipment operation. A Rack Alarm is provided that provides both contact closure and a red LED visual indication of any FRU failure. A receiving attention switch, latch and indicator are provided that causes a green LED to light and removes the rack alarm. 1.16.3.6 The Customer Premises Equipment (CPE) The CPE consists of three major subsystems, the Subscriber Unit (SU), the Network Terminating Unit (NTU), and the Uninterruptable Power Supply (UPS). Each component is located in different areas of the installation site. The SU is mounted outside at a high point on the building or on a ridged pole. The NTU is located outside of the home/building on a wall at or near the point of entry of the UPS and subscriber cabling. The UPS is located inside the home/building near (within 6 feet) the point where prime source power is available. tải về 0.71 Mb. Chia sẻ với bạn bè của bạn:
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