2.7
External Interface
In this section:
2.7.1 RF Ports
2.7.2 Optical Port
2.7.3 DC Power and Ground Ports
2.7.4 RET Port
2.7.5 Debug/Test Port
2.7.6 Maintenance Interface
2.7.1
RF Ports
e RU has four RF ports, which both n70 and n66 use.
Physical interface 4.3-10
Electrical interface
■ Impedance: 50 ohm
■ VSWR: 1.5
Other
■ L
ightning protection circuit on the RU (Refer to
Resistability of Lightning)
■ IP65 is supported with the function of waterproong with connected cable.
No guarantee for waterproof when cable is loose contact or not connected.
e RU is shipped with a protective dust cap on all the RF connectors to protect against
dust and other small particles. e water ingress protection is not required for these caps.
2.7.2
Optical Port
e RU has one optical interface to connect to/from DU by eCPRI, which supports up-link and down-link base
band data, clock and timing signals, and communication with the RU and Antenna Line Device (ALD).
■ e SFP is not installed in the RU at shipment and needs to be prepared by operator side.
■ e SFP is changeable in the eld.
■ e eCPRI format is based on ORAN specication, and O&M support can be provided by the DU vendor.
Physical interface Fiber connector is type SM UPC LC in Opt cable.
e FullAXS mini (product number: 2061981) or the compatible connector is adopted as the
waterproof connector. e product number of external cable plug is 2061980.
Electrical interface eCPRI: 10 Gb/s at least.
Electrical interface is compliant to INF-8074.
RU Hardware Feature
External Interface
55
Release 1.0 · Issue 1.1, May 2021
Fujitsu and Fujitsu Customer Use Only
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General