1. Introduction
The NOYAFA NF 8506 is a versatile multifunction Ethernet cable tester designed for network professionals and enthusiasts. It integrates various testing capabilities including cable continuity, length measurement, cable tracking, PoE testing, Ping scanning, IP scanning, switch testing, and Non-Contact Voltage (NCV) detection. This manual provides detailed instructions for the safe and effective use of your NF 8506 device.

2. Package Contents
Please check the package carefully to ensure all items are present and in good condition:
- NF-8506 Transmitter Unit
- NF-8506 Receiver Unit
- Test Pens (Alligator clips)
- USB Charging Cable (Type-C)
- Test Line
- Earphone
- RJ45 Adapter Cable
- Instruction Manual
- Cloth Bag
- Color Box
- Qualification Certificate

3. Product Overview
Familiarize yourself with the components and controls of the NF 8506:

Transmitter Features:
- HD Color Screen: Displays testing results clearly.
- RJ45 & RJ11 Ports: For connecting Ethernet and telephone cables.
- Navigation Buttons: OK, UP, DOWN, Return for menu navigation and selection.
- Charging Port: For Type-C USB charging.
- Function Icons: Cont (Continuity), Scan, Port Flash, PoE, Ping, Length, IP Scan, Switch, Set.
Receiver Features:
- Probe: For cable tracking and NCV detection.
- LED Light: Built-in for use in dark environments.
- Power Indicator: Shows power status.
- SCAN Button: Initiates cable scanning.
- NCV Button: Activates Non-Contact Voltage detection.
- Signal Sensitivity Switch: Adjusts detection sensitivity.
- Charging Port: For Type-C USB charging.
- ON/OFF Button: Powers the receiver on or off.
- CONT Button: For continuity testing.
- HTV Silicone Material: Durable and ergonomic design.
- High Sensitivity Sensor: For accurate detection.

4. Specifications
| Feature | Specification |
|---|---|
| Model | NF-8506 |
| Cable Scan Mode | Digital Mode / Analog Mode |
| Auto OFF | Yes |
| Low Power Notice | Yes |
| Cable Continuity Test | Remote & Switch |
| Cable Length Test Range | 5~200m (±3m) |
| Port Flash Speed | 10M/100M/1000M |
| PoE Standard | Mid-Span/End-Span/AT-4 pairs |
| PoE Test | PoE voltage test |
| Transmitter Link Speed | 10M/100M/1000M |
| Transmitter Duplex Mode | Full Duplex/Half Duplex |
| Transmitter Battery | 3.7V Lithium Battery |
| Ping Scan Function | Yes |
| IP Scan Function | Yes |
| Transmitter Dimension | 150×75×35mm |
| Receiver LED Light | Yes |
| Receiver Ear Phone | Yes |
| Receiver Battery | 3.7V Lithium Battery |
| Receiver Dimension | 200×50×33mm |

5. Setup
5.1 Charging the Device
The NF 8506 Transmitter and Receiver units are equipped with 3.7V Lithium Batteries and support Type-C recharging. Before first use, ensure both units are fully charged.
- Connect the provided USB Type-C charging cable to the charging port on both the Transmitter and Receiver units.
- Connect the other end of the USB cable to a compatible USB power adapter (not included) or a computer's USB port.
- The charging indicator will show the charging status. Once fully charged, disconnect the cable.

5.2 Powering On/Off
Press and hold the power button on both the Transmitter and Receiver units to turn them on or off.
6. Operating Instructions
The NF 8506 offers 9 key functions accessible via the Transmitter's menu:

6.1 Cable Continuity Test
This function allows you to quickly test the continuity status of network cables, identifying short circuits, open circuits, crossovers, and correct wiring sequences. It also supports switch pairing.
- Connect one end of the network cable to the RJ45 port on the Transmitter unit.
- If testing a cable connected to a switch, the Transmitter can be connected directly to the switch port.
- On the Transmitter, navigate to and select the "Cont" (Continuity) function.
- The screen will display the wiring sequence and any faults (e.g., short circuit, open, cross).

6.2 Cable Tracking (Digital/Analog Mode)
The NF 8506 features dual-mode hunting for quickly locating STP/UTP cables in cabling systems. It supports both digital and analog scanning modes for various environments.
- Connect the network cable to the RJ45 port on the Transmitter.
- On the Transmitter, select the "Scan" function.
- Choose either "Digital Mode" for anti-jamming and high sensitivity in noisy environments, or "Analog Mode" for quick cable location.
- Use the Receiver unit to trace the cable. The Receiver will emit an audible signal, and its signal indicator will light up when near the target cable.
- Adjust the Signal Sensitivity Switch on the Receiver for optimal detection.

6.3 Port Flash
This function helps quickly identify the port to which a network cable is connected on a switch or router by making the port's LED lights flash. It also displays the working rate (Half/Full Duplex) and port negotiation mode.
- Connect one end of the network cable to the RJ45 port on the Transmitter.
- Connect the other end of the cable to a port on the switch/router.
- On the Transmitter, select the "Port Flash" function.
- Observe the LED lights on the switch/router. The port connected to the tester will flash, allowing for easy identification.

6.4 Cable Length Measurement
Measure the length of a network cable with a range of 5 to 200 meters with an accuracy of ±3 meters.
- Insert one end of the network cable into the "Flash/Length" RJ45 port on the Transmitter.
- On the Transmitter, select the "Length" function.
- Press "OK" or "Start" to begin the measurement. The screen will display the cable length.

6.5 PoE Test
Test Power over Ethernet (PoE) standards, power levels, and power supply types.
- Connect the network cable from the PoE source to the RJ45 port on the Transmitter.
- On the Transmitter, select the "PoE" function.
- The device will display information such as PoE standard (Mid-Span/End-Span/AT-4 pairs), power voltage, class, and power supply type (Non Standard/IEEE 802.3AF/IEEE 802.3AT).

6.6 Ping Test
Perform a Ping test to quickly assess network speed issues and server response times.
- Connect the network cable to the RJ45 port on the Transmitter.
- On the Transmitter, select the "Ping" function.
- Enter the target IP address or hostname if prompted.
- The device will display results including sent (SE), received (RE), and lost (LT) data packets, along with response times.

6.7 IP Scan
Scan the network to discover active IP addresses and devices.
- Connect the network cable to the RJ45 port on the Transmitter.
- On the Transmitter, select the "IP Scan" function.
- The device will scan the network and list active IP addresses.

6.8 Switch Test (Network Speed Test)
Test the link speed and duplex mode of a network connection.
- Connect the network cable to the RJ45 port on the Transmitter.
- On the Transmitter, select the "Switch" function (or "Speed" as indicated in some displays).
- The device will display the link speed (10M/100M/1000M) and duplex mode (Full Duplex/Half Duplex).
6.9 NCV Function (Non-Contact Voltage)
The Receiver unit can detect live power lines without direct contact, helping to prevent electrical shock during cable installation or maintenance.
- Turn on the Receiver unit.
- Press the "NCV" button on the Receiver.
- Move the probe of the Receiver near wires, sockets, or other electrical equipment.
- The Receiver will indicate the presence of live voltage through visual (LEDs) and/or audible alerts.

7. Maintenance
7.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents that may damage the casing or screen.
7.2 Battery Care
- Recharge the device regularly, especially if it has not been used for a long period, to maintain battery health.
- Avoid exposing the device to extreme temperatures, which can shorten battery life.
- If the "Low Power Notice" indicator appears, recharge the device promptly.
7.3 Storage
When not in use, store the NF 8506 in its cloth bag in a cool, dry place, away from direct sunlight and moisture.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery. | Charge the device using the provided USB Type-C cable. |
| Inaccurate cable length measurement. | Cable is damaged or not properly connected. | Ensure the cable is undamaged and securely connected. Re-test. |
| Cable tracking signal is weak or inconsistent. | High interference or incorrect sensitivity setting. | Adjust the Signal Sensitivity Switch on the Receiver. Try Digital Mode in noisy environments. |
| Continuity test shows errors (short, open, cross). | Faulty cable or improper connection. | Inspect the cable for physical damage. Ensure connectors are properly crimped and inserted. |
9. User Tips
- For best results in cable tracking, especially in environments with high electromagnetic interference, utilize the Digital Scan mode.
- Always ensure both the Transmitter and Receiver units are adequately charged before starting extensive testing to avoid interruptions.
- When performing a Port Flash, observe the switch LEDs carefully. The flashing pattern helps quickly pinpoint the connected port.
- The NCV function is a safety feature; always use it to check for live voltage before handling unknown wires or equipment.
10. Warranty and Support
NOYAFA products are designed for reliability and performance. For warranty information, technical support, or service inquiries, please refer to the contact details provided on the official NOYAFA website or your purchase documentation. Keep your proof of purchase for warranty claims.
Manufacturer: Shenzhen Noyafa Electronic Co., Ltd
Website: www.noyafa.com
Tel: +86 0755-2722 0204
Email: sale@noyafa.com