ZTE Corporation R8881S8500 사용자 설명서
ZXSDR R8881 Product Description
10
ZTE Confidential & Proprietary
CPRI self-detection alarm function
Hardware configuration information for all RRU modules
Indicator function
Interfaces connecting with external equipment
Two CPRIs
Four input dry contacts
One RS485 serial port, communicating with external monitoring equipment
One network port for local debugging
One AISG electrically–tuned antenna interface
Two interfaces for combining cabinets
2.2.2
Power Amplifier (PA)
Amplifies downlink RF signals and outputs them to the duplexer.
Provides a pre-distortion feedback interface for the RTR.
Provides an SWR detection interface for the RTR.
Provides a read-write interface for module asset management.
Provides individual switch-off control.
Detects the module internal temperature.
2.2.3
Duplexer (DFL)
Lightning protection
Receives diversities
Expands ports for frequency points