Mic ETS2228 Uživatelský manuál stáhnout pdf (Strana 24)

ETS2228 Maintenance Manual

Figure 8 RF receiving unit

2 .Transmit unit

Primary unit function: Emission modulation module RFT6120 directly amplifies analog I/O signals

after DA conversion. Next, radio frequency signals are generated after RF Mixer and RF filter function

on the signals. Then the RF signals are amplified by the RF amplifier, so that RF emission signals set

with certain output power value are generated. Finally, after the duplex module sufficiently filters

out-of-band spurious emission signals, the signals will be sent to the antenna. The other function of the

duplex module is to prevent the emission signals from disturbing the work of the receiver.

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Mic ETS2228 Uživatelský manuál Strana 24