LT-200S Multi-Function Network Cable Tester User Manual

1. Introduction

Thank you for purchasing the LT-200S Multi-Function Network Cable Tester. This device is designed for comprehensive testing and maintenance of network and communication cables. It integrates various functions including cable tracing, NCV mode, continuity testing, length measurement, port flashing, PoE detection, optical power metering, and visual fault locating.

Please read this user manual carefully before use to ensure correct operation and to maximize the lifespan of your instrument. Keep this manual in a safe place for future reference.

2. Safety Precautions

To ensure safe use of this instrument, please observe the following precautions:

• Always comply with local electrical regulations when using this device.
• Avoid using the device in areas where electrical devices are prohibited, such as hospitals and gas stations.
• Use only accessories provided by the manufacturer to prevent damage from uncertified accessories.
• Do not expose the device to humid, dusty, or high-temperature environments (above 50°C).
• Use only batteries that meet the specifications; incorrect batteries may damage the device.
• Do not use this device to detect live power lines (e.g., 220V power lines), as this may damage the device or pose a safety risk.
• Avoid operating communication lines during thunderstorms to prevent lightning strikes and ensure personal safety.
• The accessories provided are for use with this device only. Do not use them for other purposes.
• Avoid severe collisions or shaking during transportation and use to prevent damage to internal components.
• Do not use the device in environments containing flammable gases.
• When using the red light source (Visual Fault Locator), do not look directly into the light, as it may cause permanent eye damage. Turn off the red light source and cover it with a protective cap when not in use.
• Do not disassemble or repair the device yourself. If disassembly is necessary, please contact our technical support team.

3. Product Features

The LT-200S offers a wide range of functionalities for network professionals:

• 3-inch HD Display: Clear and intuitive interface (48*65mm screen size).
• Cable Tracing: Anti-interference digital cable tracer supporting UTP/STP shielded cable modes.
• NCV Mode: Non-Contact Voltage detection for live wire identification.
• UTP/Continuity Test: Tests network cable sequence, detects open circuits, short circuits, and cross-connections. Verifies RJ45 connector crimping.
• Cable Length Measurement: Measures the length of open/short-circuited network cables from 1 to 600 meters with an accuracy of cable length x 3% ± 1m.
• Port Flashing: Quickly locates ports on switches or routers and identifies port speeds (100M/1000M).
• PoE Testing: Detects PoE power supply protocols (802.3BT/AT/AF/non-standard), power supply voltage, power supply pairs, pair polarity, and real-time power (0-90W) when connected to a PD load device.
• PD Power Detection: Detects standard or non-standard PoE, supporting 24V and 48V PoE.
• Optical Power Meter (Optional): Supports wavelengths 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm with a power range of -70 to +6dBm.
• Visual Fault Locator (Optional): 10mW power output, 650nm wavelength, stable and pulse modes, for detecting fiber optic line breaks, cracks, bends, and other faults up to 10 KM.

4. Package Contents

The standard package includes the following items:

• 1x Cable Tester (Emitter)
• 1x Cable Tracer (Receiver)
• 1x RJ45 Cable
• 1x RJ11 Cable
• 1x Alligator Clip Cable
• 1x Screw, Screwdriver
• 1x RJ45 to BNC Connector (Applicable to models with VFL and OPM)
• 1x Tool Bag / SC, ST Connector
• 1x User Manual (this document)

5. Device Overview

5.1 Emitter Interfaces and Functions

5.2 Cable Tracer (Receiver) Interfaces and Functions

Note: Receiver port continuity detection only supports the local end. The Emitter can support near-end, middle-end, and far-end port detection.

6. Setup

6.1 Battery Installation

The device does not come with batteries. The Emitter requires 3 AA batteries, and the Receiver requires 2 AA batteries. Ensure batteries are inserted with correct polarity.

Battery Replacement Indicators:

• If the Emitter's screen flickers, displays unclear information, or the battery icon is empty, replace the batteries.
• If the Receiver's 1-8 signal lights keep flashing after powering on, replace the batteries.

7. Operating Instructions

7.1 Power On/Off

Press and hold the power button on either the Emitter or Receiver for 2 seconds to turn the device on or off.

7.2 Setting Backlight Time and Auto Shutdown

In the power-on state, press the Settings key () to enable and switch between auto shutdown or backlight timeout options. Use the Left and Right keys to set the time.

• Auto Shutdown: Can be set from 0 to 240 minutes (0 means auto shutdown is off).
• Backlight Timeout: Can be set from 0 to 60 seconds (0 means the backlight stays on).

Press the Confirm key to save settings. Press the Menu key to exit without saving.

7.3 Cable Tracing

Connect the network or telephone cable to the "UTP/Continuity Test/Cable Tracing" port on the Emitter. Press the Menu key to switch to the cable tracing function (default on startup). The Receiver can then be used for cable tracing.

• Adjust the sensitivity knob on the Receiver. The closer the Receiver's probe is to the cable, the stronger the signal and the louder the sound.
• Press and hold the "SNCV" key on the Receiver to enter or exit silent mode.
• Use the Left and Right keys to switch between UTP and STP modes. UTP is for unshielded network cables, and STP is for shielded network cables.

Quickly Verify Tracking Result: After finding the cable, connect the network cable to the Receiver's "UTP" port for pair line detection. The "Straight/Cross/Other" indicators will light up, verifying the matching cable.

Note: The UTP port of the Emitter and Receiver can withstand up to 60V. The wire can be traced directly when connected to a PoE switch.

7.4 Power Detection Function (NCV Mode)

Turn on the Receiver. Both the "SCAN" and "NCV" indicators will light up, allowing simultaneous cable tracing and power detection.

• When the probe detects nearby AC voltage, the power detection indicator on the Receiver will flash and emit a beeping alarm. The 1-5 indicators on the panel will flash to indicate the current power detection signal strength. Different signal strengths result in different beeping and flashing frequencies.
• SNCV Enhanced Power Detection: When the Receiver is in "SCAN + NCV" mode, press the "SNCV/Silent" key to increase power detection sensitivity. This can be used to trace plastic water pipes or high-voltage wires inside walls (not effective for iron pipes).
• Live/Neutral Wire Detection Mode: Touch the Receiver's probe to live/neutral wires in electrical boxes or wall sockets. The indicator lights and beeping alarm will help distinguish between live and neutral wires. Live wire: rapid flash and beep. Neutral wire: slow flash or no light/beep.

7.5 UTP/Continuity Test

Connect the network or telephone cable to the "UTP/Continuity Test/Cable Tracing" port on the Emitter, and the other end to the UTP port on the Receiver (Receiver must be powered on).

On the Emitter, press the Menu key to switch to the "CONT" (continuity) function mode to perform the wire mapping test. The 1-8 and S sequence indicators on the screen will display the network cable sequence.

• 1Gbps/100Mbps: Indicates if the cable supports 1000M or 100M Ethernet. Straight-through connections are shown with a " ", crossed connections with a jumping indicator.
• 255: Represents the Receiver number, which can be customized.
• The Receiver's network cable type indicator quickly determines if the cable is normal ("Straight-Through" or "Crossed"). A "beep" indicates a connected pair, and a "buzz" indicates a shorted pair.
• After the 8 indicators flash, the Receiver beeps to indicate cable type: one beep for straight-through, two for crossed, and three for other/incorrect connections.

Continuity Test on the Receiver: Turn on the Receiver, press Port continuity, and connect the network cable to the wire Receiver "UTP" port. The "1-8, S" indicator light being on indicates normal wiring. If an indicator is off, the corresponding pin is abnormal.

7.6 Length Measurement

Measure the length of open/short-circuited network cables from 1 to 600 meters. The other end of the cable should NOT be connected to any device or powered on. Insert the cable into the "Length/Port Flashing" port on the left side of the Emitter.

On the Emitter, press the Menu key to switch to the "Length" function mode, then press the Confirm key to start the length measurement. The results for each twisted pair will be displayed on the screen.

7.7 Port Flashing

Connect the network cable to the "Port Flashing" port on the Emitter, and the other end to a switch or router.

On the Emitter, press the Menu key to switch to the "Flash" function mode. The device will automatically start the test.

The device sends a flashing signal. If the connection is normal, the switch port icon on the screen will flash at a certain frequency. The connected switch or router port will also flash at a fixed frequency, making it easy to identify the target port and avoid unplugging the wrong cable.

Port Rate Detection: The port rate (1Gbps or 100Mbps) is automatically detected and displayed simultaneously when the port flashes.

7.8 PoE Detection

The PoE function detects the PoE power supply protocol, power supply pairs, voltage, and real-time power when connected to a PD load device. It supports IEEE802.3bt/at/af and non-standard protocols.

Connect the network cable to the "PoE Input" port on the Emitter, and the other end to a PoE switch or power supply.

On the Emitter, press the Menu key to switch to the "PoE" function mode. The device will automatically start the test.

The display shows voltage, protocol (bt/at/af/non-standard), and real-time power. The vertical lines indicate positive and negative poles (e.g., 1-2 are positive, 3-6 are negative).

PD Electric Detection: If the PD interface at the bottom of the Receiver is connected to a PoE switch or power supply, the light indicates PoE voltage output. Two indicator lights (1236, 4578) show which cable pairs are powered.

7.9 Optical Power Meter (Optional)

Connect the fiber optic cable to the "OPM" port on the Emitter, and the other end to an optical terminal or fiber optic transceiver.

• Function Key Description:
  • HOLD: Locks the display content.
  • Left/Right keys: Select wavelength.
  • REF: Activates difference measurement mode.
• Operating Instructions: When an optical signal is detected, the optical power detection value will change. Use the direction keys to select the wavelength. If the measurement wavelength is not at a calibration point, select a similar calibration wavelength.
• Lock Display Function: Press HOLD to lock the display. Press again to unlock.
• Difference Measurement Function (Optical Fiber Loss Measurement): Press REF to store the current value and display the difference between new measurements and the stored value. Press REF again to cancel.
• User Self-Calibrated Optical Power Values: Hold down the Settings key for 2 seconds to enter self-calibration mode. The optical power value will flash. Use direction keys to adjust. Press Confirm to save, or Menu to exit without saving. Hold Settings for 2 seconds again to restore factory calibration.

7.10 Visual Fault Locator (Optional)

Connect the fiber optic cable to the "VFL" universal connector on the top of the Emitter. On the Emitter, press the Menu key to switch to the "VFL" function mode.

• By default, the red light source outputs 10mW at a wavelength of 650nm.
• Press the Left/Right keys to turn the red light on/off and switch between stable and pulse modes (1Hz flicker, 2Hz flicker).

Warning: The emission light source is a high-intensity laser. Do not look directly at the laser emission port or aim it at your eyes, as this may cause eye damage.

8. Troubleshooting

If you encounter abnormal results during Port Rate Detection or other functions, consider the following common issues:

• Incorrect Connection: Ensure the correct port on the Emitter is connected.
• Faulty Cable: The network cable itself may be faulty or not properly connected.
• Faulty Network Device: The ports of the connected switch or router may be faulty.
• Instrument Malfunction: The testing instrument itself may be faulty. If you suspect a device malfunction, contact technical support.

9. Maintenance

• Keep the device clean and free from dust and moisture.
• Store the device in a cool, dry place when not in use.
• Replace batteries promptly when the low battery indicator appears to ensure accurate readings and prevent damage.
• Avoid dropping or subjecting the device to strong impacts.
• Do not use abrasive cleaners or solvents on the device. Use a soft, damp cloth for cleaning.

10. Technical Specifications

The above data is for reference only. Changes may be made without prior notice.

11. Warranty and Support

If you encounter any issues during use or if the device is damaged, please contact our technical support department for assistance. Do not attempt to disassemble or repair the device yourself, as this may void any applicable warranty.

For detailed technical inquiries, please contact our technical support team.

A user manual in PDF format is available for download: View User Manual (PDF)