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The LinkIQ™ instruments from Fluke Networks provide a reliable solution for qualifying copper cabling, analyzing active network connections, and testing Power over Ethernet (PoE)—fast, precise, and practical. The LinkIQ™ (LIQ-100) focuses on high-performance cable and network testing with frequency-based measurements up to 10 Gbit/s. The LinkIQ™ Duo (LIQ-DUO) extends functionality with integrated WLAN analysis for 2.4 GHz, 5 GHz, and 6 GHz—ideal for use in Wi-Fi 6/6E environments.
Both models combine intuitive operation with in-depth diagnostics and also support industrial Ethernet protocols such as PROFINET, EtherNet/IP, and EtherCAT—ensuring maximum safety and efficiency during commissioning, troubleshooting, and documentation.
| Function | LinkIQ™ (LIQ-100) | LinkIQ™ Duo (LIQ-DUO) |
|---|---|---|
| Cable testing up to 10 Gbit/s | ✓ | ✓ |
| PoE testing incl. load testing | ✓ | ✓ |
| Switch diagnostics (port, VLAN, duplex) | ✓ | ✓ |
| WLAN analysis (Wi-Fi 6E) | ✓ |
Cable Qualification.
Switch Diagnostics.
Power over Ethernet (PoE).
WLAN Analysis (Duo model only).
Industry & Automation
Network Installers & Supplier
IT Administrators & System Integrators
To simplify PoE (Power over Ethernet) installation and make potential issues visible, the LinkIQ displays all wire pairs delivering power, including the various power classes (0–8) and pairs for dual-signature applications. By applying load to the connection, you can verify whether a PoE switch actually delivers the specified power across the cabling. This ensures that a PoE device or sensor is adequately powered.
The LinkIQ measures cable runs up to 1000 m and shows the distance to the fault, e.g., an open, a short, or an unterminated cable. Using the Remote ID, you can map all cable pairs to identify miswires and split pairs. The main function of the LinkIQ is cable performance testing, verifying cable bandwidth from 10BASE-T to 10GBASE-T (10 Mbit/s to 10 Gbit/s).
The IEEE-standard frequency-based measurements ensure that tested connections meet your performance requirements. To detect network issues, the LinkIQ performs diagnostics of the next connected switching node and validates its configuration by switch name, port number, VLAN information, specified data rate, and half-/full-duplex identification.
The LinkIQ Duo tester simplifies understanding of the Wi-Fi environment by performing a complete test sequence and presenting the results in the desired view: by networks, channels, or access points.
For channel testing, select a frequency band (2.4 GHz, 5 GHz, or 6 GHz) and view channel utilization, AP signal strength, and the number of APs on each channel. Activate the one-of-a-kind channel overlap view to see how many and which APs are active on a given channel or causing interference, as well as their signal strength. The details of a single channel display utilization over time and provide information about radios overlapping on that channel.
You are not quite sure yet or have further questions about the products? Do not hesitate to contact us. Whether directly on the phone or via online demo conveniently in front of your screen - our experts are there for you.