NOYAFA NF-308S Wire Fault Locator, a Network/Telephone wire/Coaxial Cable Tester
Product Description
The NOYAFA NF-308S Wire Fault Locator is a multifunction cable testing and tracing tool designed to identify wiring faults, locate cables, and measure the length of RJ45 network cables. It is suitable for network, telephone, coaxial, USB, and other compatible cable applications.
The NF-308S consists of a main tester (transmitter), a receiver, and a remote identifier. It supports wire mapping and continuity testing to identify common wiring problems, including open circuits, short circuits, crossed wires, and reversed connections.
Its cable tracing function uses adjustable receiver sensitivity to help locate target cables in cable bundles, walls, ceilings, and other installation environments. The device also supports RJ45 cable length measurement and helps determine the approximate distance to an open or short circuit.
Additional functions include Port Flash for identifying connected network switch ports and polarity testing for checking DC voltage and positive/negative connections.
The main tester features a backlit LCD display that clearly shows testing results, while the receiver includes a built-in lamp and speaker to assist with cable tracing.
Key Features
- Multifunction Cable Tester: Combines wire mapping, cable tracing, RJ45 length measurement, cable fault detection, and polarity testing.
- Wide Cable Compatibility: Traces RJ45, RJ11, BNC coaxial, USB, and other compatible metal cables.
- Wire Mapping: Tests RJ45 and BNC cable connections and identifies wiring errors.
- Cable Fault Detection: Identifies open circuits, short circuits, crossed wires, and reversed connections.
- RJ45 Cable Length Measurement: Measures network cable length and helps locate the distance to a cable fault.
- Adjustable Cable Tracing: Receiver sensitivity can be adjusted to help locate cables in different environments.
- Port Flash Function: Identifies the connected Ethernet port through the flashing indicator on a network switch or hub.
- Polarity and DC Voltage Testing: Checks positive and negative connections and measures DC voltage from 0.5V to 60V.
- Backlit LCD Display: Displays wire mapping, cable length, and fault information.
- Built-in Receiver Lamp: Helps locate cables in dark or poorly illuminated areas.
- Two Adjustable Tone Modes: Provides different tracing tones to help identify the target cable.
- Automatic Shutdown: Includes an automatic time-delay shutdown function.
- Calibration Function: Allows cable length measurement calibration using a cable of known length.
Technical Specifications
General Specifications
| Parameter | Specification |
|---|---|
| Brand | NOYAFA |
| Model | NF-308S |
| Product Type | Wire Fault Locator and Cable Tester |
| Main Components | Transmitter / Receiver / Remote Identifier |
| Display | Backlit LCD |
| Display Size | 65 × 35mm |
| Tone Frequency | 225Hz |
| Tone Modes | 2 Adjustable Modes |
| Compatible Cable Types | STP/UTP, RJ11, RJ45, BNC Coaxial, USB and Other Metal Wires |
Cable Testing and Tracing
| Parameter | Specification |
|---|---|
| Wire Mapping | RJ45 / BNC |
| Cable Continuity Testing | RJ45 / BNC / Telephone Cables |
| Cable Fault Detection | Open Circuit / Short Circuit / Crossed Wires / Reversed Connections |
| RJ45 Cable Length Measurement | Supported |
| Cable Length Range | 5–350m (User Manual) |
| Cable Length Accuracy | 2% ± 0.5m, or ±1.5ft |
| Maximum Cable Mapping Distance | 350m |
| Maximum Transmission / Tracing Distance | 2km (Datasheet) |
| Cable Tracing | RJ45 / RJ11 / BNC / USB / Other Metal Cables |
| Receiver Sensitivity | Adjustable |
| Calibration | Supported |
Port and Electrical Testing
| Parameter | Specification |
|---|---|
| Port Flash | Supported |
| Polarity Testing | Positive / Negative Identification |
| DC Voltage Measurement | 0.5–60V |
| Main Interface Withstand Voltage | 100V (Official Product Variant) |
| NET Port Withstand Voltage | 60V (Official Product Description) |
Power Supply and Physical Specifications
| Parameter | Transmitter | Receiver | Remote Identifier |
|---|---|---|---|
| Battery Type | 9V Battery | 9V Battery | No Battery Required |
| Battery Included | No | No | — |
| Maximum Working Current | Less than 70mA | Less than 70mA | — |
| Dimensions | 185 × 80 × 32mm | 218 × 46 × 29mm | 107 × 30 × 24mm |
| Connection Ports | RJ45 / RJ11 / BNC / USB | Earphone Port | RJ45 / BNC |
Applications
- Network Cable Installation: Testing and verifying RJ45 network cables during installation.
- Network Troubleshooting: Identifying open circuits, short circuits, crossed wires, and reversed connections.
- Cable Tracing: Locating RJ45, RJ11, BNC, USB, and other compatible cables in bundles or installations.
- Telephone Line Maintenance: Tracing and checking telephone wiring and connections.
- Coaxial Cable Testing: Checking BNC coaxial cable continuity and wiring conditions.
- Cable Length Measurement: Measuring RJ45 cable length and locating approximate fault distances.
- Network Port Identification: Finding connected ports on switches and hubs using the Port Flash function.
- Electrical Polarity Testing: Checking DC polarity and voltage on compatible low-voltage connections.
- Communication Infrastructure Maintenance: Supporting technicians working with network and communication cabling.
Package Contents
According to the user manual, the package includes:
| Item | Quantity |
|---|---|
| NF-308S Main Tester (Transmitter) | 1 |
| NF-308S Receiver | 1 |
| NF-308-R Remote Identifier | 1 |
| Telephone Line Adapter | 1 |
| Alligator Clips | 1 Set |
| RJ22 Adapter | 1 |
| Carrying Bag | 1 |
| User Manual | 1 |
| Certification Card | 1 |
| Color Box | 1 |
Note: The transmitter and receiver require separate 9V batteries. Batteries are not included.
Frequently Asked Questions (FAQ)
1. What is the NOYAFA NF-308S used for?
The NF-308S is a cable testing and tracing tool used to locate network, telephone, coaxial, USB, and other compatible cables. It also performs wire mapping, RJ45 cable length measurement, fault detection, Port Flash, and polarity testing.
2. Which cable types can the NF-308S trace?
It supports tracing RJ45 network cables, RJ11 telephone cables, BNC coaxial cables, USB cables, and other compatible metal wires.
3. Can the NF-308S detect wiring faults?
Yes. Its wire mapping and continuity testing functions can identify open circuits, short circuits, crossed wires, and reversed connections in supported cables.
4. Can the NF-308S measure cable length?
Yes. It measures RJ45 network cable length. The user manual specifies a measurement range of 5–350m. The official product page advertises a maximum of 1000m, so the maximum range should be confirmed with the manufacturer.
5. Can the NF-308S locate the approximate position of a cable fault?
Yes. Its length measurement function can help determine the approximate distance to an open or short circuit in an RJ45 cable, making troubleshooting easier.
6. What is the Port Flash function?
Port Flash helps identify the network switch or hub port connected to the tested RJ45 cable. The corresponding port indicator flashes, allowing technicians to locate the correct connection.
7. Can the NF-308S test DC voltage and polarity?
Yes. Its polarity testing function identifies positive and negative connections and measures DC voltage from 0.5V to 60V.
8. Does the NF-308S include batteries?
No. The main tester and receiver each require a separate 9V battery. Both batteries must be purchased separately.