Zte ZXSDR R8860E GU858 User Manual page 28

ZXSDR R8860E GU858 User Manual
2. PA
Amplify downlink RF signal input by ADTR, and output it to DFL;
Provide digital predistortion feedback signal for ADTR;
Provide power amplification output control;
Feedback forward power coupling signal to ADTR, and ADTR do forward power
inspection;
Feedback backward power coupling signal to ADTR, and ADTR do backward power
(SWR) inspection;
Provide PA internal temperature data to ADTR and ADTR will do temperature
inspection.
3. DFL
Combination and separation of receiving and transmitting signal;
Filter function of receiving & transmitting signal;
Low-noise amplification function;
Provide DFL alarm inspection function.
4. RIE
Access following these signals from PIB board: Ethernet signal, 485 dry contact, LED
indicator, single board reset signal, jumper, button signal, digital ground;
Transmit the access signal by the socket and finish the function of interface conversion.
5. PIB
Access following these signals from ADTR board: Ethernet signal, LED indicator,
single board reset signal, jumper, button signal, digital ground, power, ground and
458 signal of electrically tuned antenna;
Power, ground, and 458 signal of electrically tuned antenna, output to electrically tuned
antenna by socket; other signals are introduced to outside by test socket, to do debug
and use as indicative signal;
Finish AISG interface power filtering and 485 lightening protection;
Finish interference protection for indicators, reset signals, buttons, and jumpers.
6. RPDC
Finish power conversion from DC to DC, and provide power supply function;
Inspect input overvoltage or undervoltage, input power disconnection, output
overvoltage or undervoltage, output over-current alarm, and report it to ADTR board.
SJ-20101210110401-001|2010-12-06
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