ETS2228 Maintenance Manual
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Page 25, Total 43
Table 9 RF emission unit
3 .RF tracing unit
The main unit function is to provide RF local oscillation signals for transceiver. The RF duplex
interval is 45MHz. Therefore, we design the RF oscillator to be shared by both receiving and
transmitting operations. For both of them receiving and transmission operations, the RF local oscillator
is high. The reference clock signal frequency is 19.2MHz and the phase detection frequency is 25 KHz.
The Rx PLL circuit is integrated into RFT6122, but RX VCO and RX LO are still in RFR6122.
