Operating Manual

39GHz_L 5G Wireless Optical DAS Operating Manual

③ mmWU

This item can monitor status of mmWave module within DU. It can monitor communication status

or module insert status between CPU and mmWave module. Also, when 10MHz Ref signal is not

normal, the 'PLL' alarm within the mmWave module occurs, and when this 'PLL' alarm occurs the

'Status' item alarm turns red.

④ RF Part

This item can monitor RF input signal and control signal level received from the DRU and the UE. It

is also configured with threshold value set item for ‘ALC(Auto Level Control)’ function.

Also, it is configured with an attenuator that can compensate cable downlink loss connected

between mRU and DRU, and can compensate up to 12dB.

⑤ Function

This item can turn on/off ‘ALC(Auto Level Control)' function according to the threshold value and

detected input signal value, and can set TDD sync signal mode received from the DRU.

- Auto : Sets sync signal to ‘Auto Mode’ and switch.

- Tx CW : Output low level to set sync signal to ‘DL Fix Mode’

- Rx CW : Output high level to set sync signal to 'UL Fix Mode'