ZTE Corporation R8872AS1900 Manuale Utente

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ZXSDR R8872A Product Description
 
 
8
 
ZTE Confidential & Proprietary 
 
Amplify, filter and convert A/D and D/A signal; 
 
Convert between optical and electric signal; 
 
Capture reference clock signal from baseband unit and provide clock signal to other 
units; 
 
Measure and report voltage standing wave ratio (VSWR); 
 
Self-detect and report hardware failure alarm; 
 
Detect and report over-heat alarm; 
 
Provide communication interfaces, including, 
 
Two CPRI interfaces 
 
one  DB15  port,  for  2  dry  contacts,  one  local  debugging  or  AISG  connection 
through different kind of cables   
 
Reset function. 
2.2.2 
DFL 
The DFL has following functions: 
 
Combine and isolate transmitted and received signals; 
 
Filter the transmitted signal and received signal; 
 
Provide DFL alarm monitor function. 
2.2.3 
PA 
The PA has following functions: 
 
Perform radio signal amplifying function; 
 
Implement temperature report function; 
 
Implement Low-Noise-Amplifier (LNA) function;