Operating Manual

39GHz_L 5G Wireless Optical DAS Operating Manual

① Information

This item is configured with 'DC alarm' that can monitor status of the DC 37V supplied through

Bias-T. Also, it can monitor enclosure temperature status, and has 'Temp Comp' implemented which

can set the temperature table input value applicability.

② mmBU

This item can monitor the status of the BTU within the DU. The BTU is a module that

transmit/receives voltage from the Bias-T, MDU communication data, 10MHz Ref signal, TDD sync

signal.

③ mmWU

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

the communication status between CPU and mmWave module, and module insert status. Also, when

the 10MHz Ref. signal is not applied normally the 'PLL Alarm' occurs, and when this 'PLL Alarm'

occurs the 'Status' item alarm turns red.

④ RF Part

This item can monitor the 37GHz RF input signal and signal level each from the base station and

MDU. Also it has threshold value setting item for 'ALC(Auto Level Control) function.

It is configured with an attenuator that can compensate the uplink loss of the cable connected

with the DU and MDU, and can compensate up to 12dB.

⑤ Function

This item can on/off the 'ALC' function according to the detected input signal value and threshold

value, and can set the TDD sync signal mode from the MDU.

- Auto : Set sync signal to 'Auto Mode' and switch.

- Tx CW : Output to low level to set sync signal as 'DL Fix Mode'.

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