本音响维修手册为电子版,SHURE 舒尔SHURE 舒尔 PG4 无线接收器维修手册 维修手册 共35页........The receiver incorporates Shure's patented Predictive Diversity scheme. The microprocessor's A/D input is continuously monitoring buffered
RSSI output from the TP_RSSI_A2D test point. It uses a dynamically adaptive threshold to control dual PIN diode D510, to switch between the internal antennas. The received RF signal enters an image rejection helical filter (FL510). The filter FL510 in conjunction with a discrete filter post LNA attenuates the 1st LO frequency from reaching the antenna ports. The RF signal is then down-converted with
IC520, an integrated receiver front-end chip that includes: LNA
