User manual
Ubiquiti Networks airFiber AF-5XHD 5 GHz

User Manual for Ubiquiti Networks airFiber AF-5XHD 5 GHz Carrier Backhaul Radio with LTU Technology

• Product category: Wireless Bridges Ubiquiti Networks
• Brand: Ubiquiti Networks
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Ubiquiti Networks Wireless Bridges

Product description

Engineered for Performance
• The AF‑5XHD's custom LTU silicon and radio architecture provides breakthrough performance. Its core communications processing engine surpasses the limitations inherent to generic Wi -Fi chips to provide low latency, long‑range capability, DFS flexibility, higher constellations, and better power output, along with improved receive sensitivity. The AF-5XHD features 21.2 bps/Hz spectral efficiency, line‑rate data packet processing for up to 1.34 Gb/s of real data throughput, and innovative xtreme Range Technology (xRT)

Key Features
• Programmable Transmit Power
  The radio's transmit power level can be programmed up to +29 dBm
  Programmable Duty Cycle (GPS Synchronized Frames)
  The AF-5XHD allows configuration of asymmetric TX and RX duty cycles. TX ratios include 25%, 33%, 50%, 66.7%, and 75%
  Configurable GPS Synchronization
  The AF-5XHD offers configurable support for 2, 2.5, 4, and 5 ms frames. Timing is compatible with all other synchronous systems
  Split TX and RX Frequency
  The radio can operate on different frequencies for TX and RX, allowing great flexibility for interference avoidance
  Split TX and RX Channel Bandwidth
  Support for different channel bandwidths for TX and RX allows users to scale required data capacity more efficiently
  Adaptive Modulation up to 1024QAM
  Adaptive modulation rates of up to 1024QAM (4096QAM with targeted upgrade) are supported
  Dual Redundant Gigabit Ethernet Ports with PoE
  The AF-5XHD has two Gigabit Ethernet ports that can be used to provide redundant PoE power
  OFDM and OFDMA Support
  The radio offers flexible scheduling for 2, 4, or 8 subchannels
  Bluetooth Wireless Configuration
  Use the built-in Bluetooth interface for wireless configuration
  AlignLock Antenna Aiming Guard
  This alerts the user when the radio or antenna aiming is changed due to tampering, impact, or storm damage
  User-Configurable Interference Mitigation
  Three user-selectable profiles support both high‑interference and greenfield deployments for robust, optimal performance
  Redundant Images for Fail-Safe Configuration
  Creation of backup firmware images ensures fail-safe configuration and enhances reliability
  Persistent Spectrum Analysis with Dedicated RX
  Perform real-time spectral analysis for the full band on live links without interrupting the link operation
  Wide Voltage Range, Enhanced Surge Protection
  The AF-5XHD has an operating voltage range of 19‑50 VDC and provides enhanced surge protection

Software
• The airFiber AF-5XHD uses Ubiquiti's airOS LTU software, which offers you a variety of advanced features.
  Spectral Analysis with airView
  airView allows you to identify noise signatures and plan your networks to minimize noise interference.
  
  airView performs the following functions:
  • Constantly monitors environmental noise
  • Collects energy data points in real‑time spectral views
  • Helps optimize channel selection, network design, and wireless performance
  
  airView runs in the background without disabling the wireless link, so there is no disruption to the network. In airView, there are three spectral views, each of which represents different data: waveform, waterfall, and ambient noise level. airView provides powerful spectrum analyzer functionality, eliminating the need to rent or purchase additional equipment for conducting site surveys

UNMS App
• The AF-5XHD supports the Ubiquiti Network Management System. UNMS is a comprehensive management controller featuring an easy-to-navigate graphic UI. The UNMS app provides instant access to the airOS configuration interface and can be downloaded from the App Store (iOS) or Google Play (Android). UNMS allows you to set up, configure, and manage the AF-5XHD and offers various configuration options once you're connected or logged in.

5 GHz Backhaul
• Full-Band Certification with DFS
  The AF‑5XHD covers the entire, license-free, 5 GHz spectrum and includes DFS approval. Anyone around the world can deploy and operate the AF‑5XHD in the 5 GHz range practically anywhere they choose (subject to local country regulations).
  Optimal Operation in Unlicensed Bands
  Channel width flexibility (10/20/30/40/50/60/80/100 MHz) allows independent TX and RX channel frequency configurations anywhere within the radio band to avoid local interference, and the channel centers are selectable in 1 MHz increments. You also have the ability to program different uplink and downlink duty cycles to support asymmetric traffic requirements.
  Ultra-Low Latency with HDD Technology
  The AF‑5XHD is designed to provide high TDD throughput and is engineered with proprietary Hybrid Division Duplexing (HDD) technology. In a backhaul link, two AF‑5XHD radios use patent-pending HDD technology to calculate the propagation delay and know when each radio can transmit and receive, so they send packets in precise synchronization. Packet transmission latency is virtually eliminated

Co-Location
• Co-location is vital in many scenarios. For example, a WISP may have limited tower space, so it must co-locate all equipment within that allotted footprint.
  GPS Synchronization
  Precise GPS frame synchronization frees the AF‑5XHD from interference for enhanced co‑location capability. GPS enables the concurrency of TX and RX frames, so you can co-locate the AF‑5XHD radios and enhance the overall performance of your backhaul links.
  Clean Power Output
  Using digital pre-distortion compensation and multi-IFFT processing, the innovative RF design delivers ultra-clean power output that improves noise immunity and co‑location performance. This reduces the potential impact on the RF noise environment and allows for the use of higher-order modulation, such as 1024QAM.

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