Operating Manual

PRIVATE AND CONFIDENTIAL © 2021 FRTEK CO., LTD.
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39GHz_L 5G Wireless Optical DAS Operating Manual
3.6 DRU Configuration
The DRU converts optic signal received from the MHU into IF signal and sends to mRU, or converts
IF signal received from the mRU into analog optic signal and sends to MHU. DRU can be connected
with up to 4 mRUs, each MIMO port is configured with Bias-T and supplies DC 37V to mRU. Also,
sends CPU communication data and 10MHz Ref. signal, TDD sync signal, MIMO IF signal through
MIMO port, and sends SISO IF signal through SISO port.
DU is created as enclosure for waterproof, and can be installed in-building/outdoors. Uses AC 120V
power, and is configured with AWG 6 ground terminal for system grounding..
Figure 8. DRU Configuration.
Warning
When installing DRU, side lugs must be grounded and permanently connected.