NOYAFA NF-308 Line Tester User Manual

1. Introduction

The NOYAFA NF-308 is a versatile cable testing device designed for network professionals and DIY enthusiasts. It combines multiple functions into one unit, including wiremap testing, cable length measurement, cable tracing, and port identification. This manual provides detailed instructions for the safe and effective use of your NF-308 Line Tester.

Figure 1: NOYAFA NF-308 Line Tester components (Emitter, Receiver, Remote Unit)

2. Product Overview

2.1 Key Features

• Directly hunts 5E, 6E, telephone wire, coaxial cable, USB cable, and other metal cables.
• Hub blink function for locating network ports by flashing the port light on a Hub/Switch.
• Checks wiring errors in 5E, 6E, and coaxial cables, including open circuit, short circuit, jumper wire, and reverse connection.
• Measures cable length up to 1000m and identifies breakage points.
• Performs polarity tests to measure DC voltage (0.5-60 V).
• Includes memory and storage for calibration data.
• Features automatic time-delay shut-off and a low battery alarm function.

2.2 Components

Figure 2: Product structure and labeled components.

The NF-308 system consists of three main units:

• Emitter (Main Unit): Features an LCD screen, function buttons (PAIR&L, SCAN, ON/OFF, Up/Down arrows), and various ports for cable connection.
• Receiver (Probe): Used for tracing cables and includes a probe tip, lamp, earphone jack, scan button, and speaker.
• Remote Unit: A small passive unit used for remote wiremap testing, featuring RJ45 and BNC connectors.

Figure 3: Detailed view of Emitter ports.

3. Setup

3.1 Battery Installation

Both the Emitter and Receiver units require a DC 9.0V (NEDA 1604/6F22 DC9V) battery. To install:

1. Locate the battery compartment on the back of each unit.
2. Open the battery cover.
3. Insert a 9V battery, ensuring correct polarity.
4. Close the battery cover securely.

Figure 4: Battery compartments of the Emitter and Receiver.

3.2 Powering On/Off

Press the power button on the Emitter to turn it on or off. The LCD screen will illuminate upon power-on.

4. Operating Instructions

The NF-308 offers several testing modes. Use the function buttons and arrow keys on the Emitter to navigate the menu on the LCD screen.

4.1 Wiremap Test (Cable Continuity)

This function checks for wiring errors such as open circuits, short circuits, jumper wires, and reverse connections in RJ45, RJ11, and BNC cables.

1. Connect one end of the cable to the appropriate port on the Emitter (e.g., 'MAIN' for RJ45/RJ11, 'BNC' for coaxial).
2. For remote testing, connect the other end of the cable to the Remote Unit. For local testing, leave the other end unconnected or connect it to the Emitter's 'RJ45 SCAN' port if applicable.
3. Select '1. WireMap' from the Emitter's menu using the arrow keys and press the 'SCAN' button to start the test.
4. The LCD will display the wiremap results, indicating any faults.

Figure 5: Cable Fault Testing: Local vs. Remote.

Figure 6: Examples of wiremap test results on the LCD screen.

4.2 Cable Length Measurement

This function measures the length of RJ45 cables and locates breakage points with up to 98% accuracy for lengths up to 1000m.

1. Connect one end of the RJ45 cable to the 'MAIN' port on the Emitter. The far end of the cable should be disconnected.
2. Select '2. Pair&Length' from the Emitter's menu and press 'SCAN'.
3. The LCD will display the length for each pair and indicate the distance to any breakage points.

Figure 7: Measuring cable length and locating broken distance.

Figure 8: Cable length test results: Good cable vs. Broken cable.

4.2.1 Calibration Data

The NF-308 allows for memory and storage of up to 3 sets of calibration data based on different cable types. This ensures higher accuracy for length measurements.

Figure 9: Calibration data menu on the LCD screen.

4.3 Port Finder (Hub Blink)

This feature helps locate a specific network port on a Hub or Switch by making its link/activity light flash.

1. Connect the Emitter to the network switch using an RJ45 cable via the 'PORT FLASH' port.
2. Select '4. Port Flash' from the Emitter's menu and press 'SCAN'.
3. Observe the ports on the switch. The target port will flash at a lower frequency than other active ports.

Figure 10: Using the Port Finder function to locate a network port.

4.4 Cable Scan (Wire Tracing)

Use the Receiver to trace the path of a cable and identify it among a bundle of cables.

1. Connect the cable to be traced to the appropriate port on the Emitter (e.g., 'RJ45 SCAN', 'RJ11 SCAN', 'USB SCAN').
2. Turn on the Receiver.
3. Press the 'SCAN' button on the Emitter to activate the tone.
4. Use the Receiver's probe to follow the cable. The Receiver will emit an audible tone when it detects the signal from the Emitter. Adjust the volume on the Receiver as needed.

Figure 11: Tracing an active cable connected to a PoE switch using the Receiver.

4.5 Polarity Testing

This function allows you to measure DC voltage and test polarity.

1. Connect the test leads to the Emitter's input.
2. Connect the other ends of the test leads to the DC voltage source you wish to test.
3. The LCD screen will display the voltage and polarity (positive/negative) for the connected wires.

Figure 12: Polarity testing with a 9V battery.

5. Troubleshooting

• No display/Low battery alarm: Replace the 9V battery in the respective unit.
• Inaccurate length measurement: Ensure the far end of the cable is disconnected. Consider calibrating the device for the specific cable type being tested.
• No tone during cable tracing: Check if the Emitter is in 'SCAN' mode and if the Receiver is powered on and has sufficient battery. Ensure proper connection of the cable to the Emitter.
• Cannot locate network port: Verify the Emitter is connected to the switch's 'PORT FLASH' port and the function is activated. Ensure the switch is powered on and the port is active.
• Device not responding: Turn off the device, remove batteries, wait a few seconds, then reinsert batteries and power on.

6. Specifications

7. Safety Precautions

• Do not connect the device to high voltage lines to prevent damage to the machine and potential injury.
• Handle the device with care, especially the sharp probe on the Receiver, to avoid personal injury.
• Always connect cables to the correct ports as indicated on the device.
• Read this user manual thoroughly before operating the device.

8. User Tips

• For accurate cable length measurements, ensure the cable is completely disconnected from any network devices at the far end.
• When tracing cables in noisy environments, use the earphone provided with the Receiver for clearer tone detection.
• Utilize the lamp on the Receiver when working in dimly lit areas or inside network cabinets.
• Regularly check the battery level, especially before starting critical testing tasks, to avoid interruptions.
• Store calibration data for frequently used cable types to save time and improve measurement consistency.

9. Maintenance and Support

9.1 Maintenance

• Keep the device clean and free from dust and moisture.
• Store the device in its protective case when not in use.
• Remove batteries if the device will not be used for an extended period to prevent leakage.

9.2 Support

For technical assistance, warranty information, or service inquiries, please contact NOYAFA customer support. Refer to the product packaging or NOYAFA's official website for contact details.