User's Guide
Table Of Contents
- User Guide
- Contents
- Preface
- 1 About this Guide
- 2 Overview
- 3 RU Hardware Feature
- 3.1 System Configuration
- 3.2 RU Specifications
- 3.3 Environment Specification
- 3.4 RU Downlink/Uplink Default Parameters
- 3.5 Antenna Configuration
- 3.6 Carrier Configuration
- 3.7 Block Diagram
- 3.8 External Interface
- 3.9 TX Control Function
- 3.10 Performance Requirement
- 3.11 Mechanical Design and Other Options
- 4 Ordering Information
- 5 Installation
- 6 Operations
- 7 Maintenance and Trouble Clearing
- 8 Removal
- A References
- B ZTP Overview
- C Optical Connector Cleaning
- D Glossary
- Index
3.8
External Interface
In this section:
3.8.1 RF Ports
3.8.2 Optical Port
3.8.3 DC Power and Ground Ports
3.8.4 RET Port
3.8.5 Debug/ Test Port
3.8.6 M aintenance Interface
3.8.1
RF Ports
The RU has 4 RF ports, which both n70 and n66 use.
Physical interface 4.3-10
Electrical interface ■ Impedance: 50 ohm
■ VSWR: 1.5
Other ■ Lightning protection circuit on the RU (Refer to
Resistability of Lightning)
■ IP65 is supported with the function of waterproofing with connected cable.
No guarantee for waterproof when cable is loose contact or not connected.
The RU is shipped with a protective dust cap on all the RF connectors to protect against
dust and other small particles. The water ingress protection is not required for these caps.
3.8.2
Optical Port
The 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).
■ The SFPs are not mounted in the RU at shipment and a need to be prepared by operator side.
■ The SFPs can be changeable in the field.
■ The eCPRI format is based on ORAN specification, and O&M support can be provided by the DU vendor.
Physical interface Fiber connector is type SM UPC LC in Opt cable.
The FullAXS mini (product number: 2061981) or the compatible connector is adopted as
the waterproof connector. The 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
36
Release 1.0 · Issue 1, March 2021
Fujitsu and Fujitsu Customer Use Only