UC-00-M15 EN R1.4
Product Introduction
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1.9
Clock
The industrial TCXO is built into the UM220-IV L module to ensure the stability of the
clock system and the ability to capture signals quickly in weak signal environments.
UM220-IV L also integrates the 32k crystal to maintain the RTC clock. When the main
power supply is removed, the normal operation of the RTC can be maintained by
providing V_BCKP.
1.10
Antenna
The filter and linear amplifier are built in the UM220-IV L module. They support active
antennas and passive antennas, and the former provides better performance.
