UNI-T UT685A KIT TDR Cable Tester - Network Wire Tracker

Main Product Features

• Versatile TDR Cable Testing: Reliably tests twisted-pair network cabling including CAT5, CAT6, UTP, FTP, and SSTP.
• Exclusive 8-Core Crimping Test: Fast 1-to-1 wire mapping and crimp verification in 1 second or less with a 10 cm minimum detectable length.
• Precise Length & Fault Distance: Measures open-circuit cable lengths from 2.5 m to 300 m and pinpoints short-circuit fault locations.
• Comprehensive PoE Diagnostics: Evaluates Power over Ethernet across DC 5 V to 60 V supporting IEEE 802.3af, 802.3at, and 802.3bt standards.
• Ethernet Port & Switch Detection: Identifies port link status, 10M/100M/1000M speeds, auto-negotiation, and full/half-duplex modes.
• Digital Anti-Interference Wire Tracing: Highly accurate 125 kHz modulated signal traces RJ45 lines up to 1,000 m and RJ11 lines up to 3,000 m.
• Live Wire & Hazardous Voltage Warning: Equipped with polarity detection and clear warnings for voltages exceeding 10 V, backed by 70 V DC input protection.
• Clear 2.8-Inch LCD: High-contrast digital screen provides direct visual feedback for cable maps, diagnostics, and test metrics.

Professional Network Certification and Troubleshooting

Modern telecommunications, server room deployments, and structured cabling projects demand speed, accuracy, and absolute reliability. The UNI-T UT685A KIT is an advanced TDR cable tester engineered specifically for IT administrators, network engineers, and cabling contractors. By integrating Time-Domain Reflectometry (TDR) technology, the UT685A KIT provides comprehensive diagnostics for structured wiring, effortlessly checking continuity, mapping individual conductors, and calculating cable run distances up to 300 metres.

Dedicated Crimping and Wire Map Verification

Unlike standard continuity testers, the UT685A KIT features an exclusive 8-core crimping test function. When terminating patch leads or wall jacks on site, technicians can verify RJ45 crimp integrity with a response time of under one second. The tester accurately detects proper pinouts and crimp connectivity down to a minimum cable length of just 10 cm, saving significant setup time during high-density rack patching.

Advanced PoE and Active Switch Diagnostics

Active networks present complex variables when powering IP cameras, wireless access points, and VoIP hardware. The UT685A KIT addresses these challenges with integrated Power over Ethernet (PoE) testing covering DC 5 V to 60 V. It automatically classifies IEEE 802.3af, 802.3at, and 802.3bt standards directly on its bright 2.8-inch display. Furthermore, its port flashing and switch detection capabilities allow users to confirm 10M, 100M, and 1000M transmission speeds, check auto-negotiation, and verify full-duplex or half-duplex operation without carrying bulky secondary analysers.

Noise-Resistant Line Tracing and Rugged Design

Locating specific cables in crowded conduits or complex server patch panels is straightforward thanks to digital line tracing. Utilising a 125 kHz digitally modulated anti-interference signal, the included receiver tracks RJ45 cables over runs up to 1,000 m and RJ11 telephony wiring up to 3,000 m. For field resilience, the UT685A KIT is 1-metre drop-tested and features robust 70 V DC input protection against unexpected line surges. The device is fully tested for user safety and complies strictly with European safety and environmental standards, featuring official CE conformity and RoHS compliance.

Technical Specifications

Frequently Asked Questions (FAQ)

What is the primary benefit of TDR technology in the UT685A KIT?

Time-Domain Reflectometry (TDR) sends high-frequency pulses down the cable conductors to accurately calculate distance to open circuits and pinpoint the exact location of short-circuit faults, eliminating guesswork during cable repairs.

Can the UT685A KIT test cables carrying active electrical voltage?

Yes, the unit features live wire detection with polarity checking and an automatic warning indicator whenever hazardous voltages above 10 V are present. It also incorporates robust input protection rated up to 70 V DC.

How does the exclusive crimping test work?

The dedicated crimping interface checks all 8 cores in less than one second, allowing technicians to immediately confirm whether newly terminated RJ45 modular plugs are correctly pinned and seated, functioning on lengths as short as 10 cm.

Which PoE standards can the tester identify?

The UT685A KIT evaluates PoE operating voltages between DC 5 V and 60 V, correctly detecting and distinguishing between 802.3af, 802.3at, and high-power 802.3bt standards.

Does the UT685A KIT comply with European directives?

Yes, the instrument is fully engineered to meet European safety and quality requirements, carryin