Description
The UT685B (UNI-T) TDR Cable Tester is a professional handheld Time Domain Reflectometry (TDR) network cable tester designed for fault detection, cable mapping, and length measurement of communication and low-voltage cables.
It is widely used in LAN installation, CCTV wiring, telecom maintenance, and industrial network troubleshooting.
Key Features
• Advanced TDR technology for accurate cable fault location
• Supports twisted pair (CAT5/CAT6/CAT8), coaxial, and telephone cables
• Detects cable faults: open circuit, short circuit, split pair, miswire
• Measures cable length up to 500 meters with high accuracy
• POE detection and identification (802.3af / 802.3at / 802.3bt)
• Built-in wire mapping and line sequence testing
• Port blinking function for switch port identification
• Tone generator mode with receiver support (UT683R in KIT version)
• 2.8-inch backlit LCD with graphical interface
• RJ45, RJ11, and coaxial test ports integrated
• High-efficiency troubleshooting tool for network installations
Specifications
• Product Type: TDR Cable Tester / Network Cable Analyser
• Model: UT685B (UT685B KIT version includes receiver)
• Manufacturer: UNI-T
• Cable Types Supported: UTP, FTP, SSTP, Coaxial (50Ω / 75Ω / 93Ω)
• Cable Length Range: Up to 500 m
• Length Resolution: ~0.33 m
• Accuracy: ±(4% or 0.6 m)
• POE Detection: 802.3af / 802.3at / 802.3bt
• Input Protection: Up to 70V DC
• Display: 2.8-inch LCD with backlight
• Connectors: RJ45, RJ11, F-type coax
• Power Supply: AAA batteries (varies by kit)
• Functions: TDR length test, wiremap, tone tracing, port flashing, NCV detection
• Application: Network installation, CCTV cabling, telecom maintenance, industrial wiring
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