POMIACAM LT-300

Contents

POMIACAM LT-300 Multi-Function Network Cable Tester User Manual

Model: LT-300

1. Introduction

The POMIACAM LT-300 is a versatile multi-function network cable tester designed for the maintenance and installation of various cable types. It integrates several essential testing capabilities into a single, portable device, including cable tracing, optical power measurement, and visual fault location. This unit supports detection of near-end, mid-end, and far-end fault points for RJ45 cable connectors, and also features PoE power supply protocol detection to measure PSE power supply voltage and power. This comprehensive tool enhances safety and productivity for network installers and engineers.

POMIACAM LT-300 Multi-Function Network Cable Tester showing the Emitter and Receiver units.
Figure 1: POMIACAM LT-300 Emitter and Receiver Units

2. Setup

2.1 Battery Connection

The tester comes with a built-in lithium-ion rechargeable battery. For safety during transportation, the battery cable inside the battery compartment is disconnected. Before using the product for the first time, you need to connect the battery cable.

Internal view of the LT-300 showing the battery compartment with disconnected and connected battery cables.
Figure 2: Battery Connection (Energized State shows connected cable)

2.2 Charging the Device

The LT-300 is equipped with a 3.7V 2000mAh lithium-ion rechargeable battery. Use the provided Type-C charging port to charge the device.

LT-300 Emitter and Receiver units being charged via Type-C cable.
Figure 3: Charging the LT-300

2.3 Interface Overview

Familiarize yourself with the ports and controls on both the Emitter and Receiver units.

Diagram labeling the ports on the LT-300 Emitter unit, including OPM, LED, VFL, Type-C, Pair/Cont/Scan, Port Flash/Length, PoE In, and PoE Out.
Figure 4: Emitter Unit Interface
Diagram labeling the controls and indicators on the LT-300 Receiver unit, including Power, Scan, NCV, RJ45, Mode, LED switch, and Signal Sensitivity Switch.
Figure 5: Receiver Unit Controls and Indicators

3. Operating Instructions

The LT-300 offers a variety of functions for network cable testing. Below are instructions for each feature.

3.1 Cable Tracer (Scan)

The cable tracer function helps quickly locate target cables among a bundle. The device uses a secondary code digital mode to reject noise and false signals, ensuring accurate cable identification.

  1. Connect the Emitter to the network cable you wish to trace.
  2. Switch the Receiver to scan mode.
  3. Adjust the Receiver's sensitivity to quickly determine the approximate area of the cable.
  4. Turn down the sensitivity to scan the cable accurately.
  5. Check the network cable sequence.
Image showing the LT-300 Receiver being used to digitally scan and identify various cable types like network, telephone, RVV power, elevator, and video cables.
Figure 6: Digital Cable Scanning

Video 1: Comprehensive demonstration of the Network Cable Tester's functions, including scanning, NCV detection, crimping test, length measurement, port testing, PoE testing, optical power meter, and visual fault locator.

3.2 Continuity Test (UTP Cable Test)

This function quickly tests the continuity status of network cables (1000/100 M), including through, cross, and wrong cable configurations. It also tests the sequence, type, and remote kit, quickly detecting near-end, mid-end, and far-end fault points of RJ45 cable connectors.

  1. Connect one end of the network cable to the 'Pair/Cont/Scan' port on the Emitter.
  2. Connect the other end to the remote kit (if testing remote continuity) or leave it open for single-end tests.
  3. The Emitter's display will show the continuity status, indicating if the cable is normal, crossed, or has other faults. For gigabit straight-through cables, normal connection is indicated by illuminated gigabit and straight-through indicators.
LT-300 Emitter display showing continuity test results with indicators for 100M, CROSS, OTHER, and SNCV.
Figure 7: Continuity Test Display

3.3 Single Side Cable Crystal Connector Crimping Test

This test displays the 8-core status of the crystal head to quickly identify crimping issues.

  1. Connect the RJ45 connector to the appropriate port on the Emitter.
  2. The display will show the status of each core, indicating if it's normal or if a core is disconnected (e.g., 'The fifth core is disconnected').
Diagram showing a normal RJ45 crystal head and one with a disconnected fifth core, as displayed on the LT-300 Emitter.
Figure 8: Crystal Connector Crimping Test

3.4 Network Cable Length Measurement (TDR Test)

The LT-300 supports open and short measurement for network cables, with a measurement range of up to 600 meters.

  1. Connect the network cable to the 'Port Flash/Length' port on the Emitter.
  2. Select the length measurement function.
  3. The display will show the cable length in meters.
LT-300 Emitter displaying 'Length' and '600M' indicating cable length measurement capability.
Figure 9: Cable Length Measurement

3.5 PoE Detection and Test

The device supports IEEE802.3af/at/bt supply power protocols and can measure the PSE (Power Sourcing Equipment) power supply voltage and power.

  1. Connect the network cable from the PoE switch to the 'PoE In' port on the Emitter.
  2. The display will show the PoE voltage, protocol (e.g., bt, at), and power.
  3. To test PoE output (transparent transmission) to a powered device (PD) like an IP camera, connect the PD to the 'PoE Out' port. The tester can supply power to the camera and detect real-time power from the PSE.
LT-300 Emitter connected to a PoE switch and an IP camera, displaying PoE voltage and power readings.
Figure 10: PoE Test and Output

3.6 Port Flashing

This function helps identify the physical port on a switch or router that a specific cable is connected to by making the port's LED lights flash at the same frequency as the device.

  1. Connect the network cable to the 'Port Flash/Length' port on the Emitter.
  2. Activate the Port Flash function.
  3. Observe the LED lights on the switch/router and the connected device; the corresponding port will flash.
LT-300 Emitter connected to a network switch, showing the Port Flash function in action with flashing LED indicators on the switch.
Figure 11: Port Flashing Function

3.7 NCV (Non-Contact Voltage) Detection

The NCV function on the Receiver unit detects live power lines to help avoid electrical shock and identify neutral/live wires.

  1. Switch the cable tracer (Receiver) to NCV mode. The NCV indicator will turn on.
  2. Bring the tip of the Receiver close to a power line or outlet.
  3. If AC voltage is detected, the LED light will flash red, and the device will emit a fast buzz sound.
  4. For live wires, the indicator flashes quickly with rapid buzz sounds. For neutral wires, the indicator is off or flashes slowly with no buzz sounds or slow buzz sounds.
Diagram illustrating the NCV function of the LT-300 Receiver, showing detection of a broken live wire and identification of neutral/live wires in an outlet.
Figure 12: NCV Detection

3.8 Optical Power Meter (OPM)

The optical power meter checks the output power of optical devices and measures fiber link loss.

  1. Connect the optical fiber to the OPM port on the Emitter.
  2. The device supports various wavelengths (850/980/1270/1300/1310/1490/1550/1577/1625/1650 nm).
  3. The display will show the optical power in dBm or nW.
LT-300 Emitter connected to an optical fiber device, displaying optical power readings in dBm and nW.
Figure 13: Optical Power Meter Function

3.9 Visual Fault Locator (VFL)

The VFL emits a red laser to detect bending and breakage in multi-mode and single-mode fibers, with a test range of up to 10 KM.

  1. Connect the optical fiber to the VFL port on the Emitter.
  2. Turn on the VFL function.
  3. Observe the fiber for any visible red light leakage, indicating a fault.

4. Maintenance

4.1 Automatic Shutdown

The device features an automatic shutdown function to conserve battery life. You can set the function time for automatic shutdown.

  1. Press the Settings key (gear icon) to access the settings menu.
  2. Use the left or right arrow keys to navigate and set the desired automatic shutdown time.
LT-300 Emitter display showing the automatic shutdown time setting, with 'PWR' and 'Min' indicators.
Figure 14: Automatic Shutdown Setting

4.2 General Care

  • Keep the device clean and free from dust and moisture.
  • Store in a cool, dry place when not in use.
  • Avoid dropping or subjecting the device to strong impacts.

5. Troubleshooting

  • Device not powering on: Ensure the internal battery cable is connected and the battery is charged.
  • Inaccurate readings: Check cable connections for proper seating. Ensure the correct test mode is selected.
  • No signal during cable tracing: Adjust the Receiver's sensitivity. Ensure the Emitter is properly connected to the cable.
  • NCV warning when no live wire is present: Ensure the device is not near other strong electromagnetic fields.

6. Specifications

FeatureSpecification
Model NumberLT-300
TypeCable Tester
Brand NamePOMIACAM
OriginMainland China
CertificationCE, FCC, RoHS
Display3 inch, 48*65mm
PoE DetectorSupport IEEE802.3af/at/bt supply power protocol
Working Temperature-10℃ ~ +50℃
Working Humidity30% - 90%
Cable Length MeasurementMax 600m
UTP Cable TestSupport
PD Powered DetectionSupport
Port FlashingSupport
Optical Power MeterWavelengths: 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm. Measurement range: -70 ~ +6 dBm.
Visual Fault LocatorRed laser source, test multi-mode and single-mode fiber bending/breakage, test range 10KM.
External Power Supply3.7V 2000mAh Lithium Battery
Battery IncludedYes
PackageYes

6.1 Model Comparison (LT-300 vs. Other Models)

Table comparing features of LT-200, LT-200S, LT-300, and LT-300S models, indicating which features are supported by each.
Figure 15: Model Feature Comparison

7. Warranty and Support

For any issues or support inquiries, please contact the seller or refer to the official product documentation. Keep your purchase receipt for warranty claims.

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

8. User Tips

  • Always ensure the battery is sufficiently charged before starting extensive testing to avoid interruptions.
  • When using the cable tracer, start with higher sensitivity to locate the general area, then reduce sensitivity for precise identification.
  • For accurate length measurements, ensure the cable is disconnected from any active network equipment.

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