Mic ETS2228 User Manual download pdf (Page 25)

ETS2228 Maintenance Manual

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.

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Mic ETS2228 User Manual Page 25