Operating Manual

PRIVATE AND CONFIDENTIAL © 2021 FRTEK CO., LTD.
25
39GHz_L 5G Wireless Optical DAS Operating Manual
3.7 mRU Configuration
The mRU is created as one enclosure, back side is configured with mounting bracket for wall
installation. mRU converts IF frequency received from the DRU into 37GHz RF frequency and radiates
5G signal through antenna. (Downlink). Also, converts 37GHz RF signal received from UE into IF
frequency and send to DRU through coaxial cable.
mRU is configured with mPSU, mBTU, mmWave Module, mCPU modules, and is supplied 37V
power from the DRU through MIMO port. For system grounding side part is configured with AWG 6
ground terminal.
Figure 9. mRU Configuration.
Warning
DC 37V through Bias-T must be input through MIMO port, so SISO and MIMO must be
accurately distinguished when connecting coaxial cable.