How to Test and Troubleshoot LAN Cables with Noyafa NF-859GS Malaysia
How to Test and Troubleshoot LAN Cables with Noyafa NF-859GS Malaysia
Network cable problems can cause slow connections, unstable communication, CCTV camera disconnections and complete network failure. For technicians, finding the actual fault quickly is often more important than simply knowing that a cable is not working.
The Noyafa NF-859GS Multifunction Network Cable Tester combines several useful testing functions in one portable instrument, making it suitable for LAN installation, network maintenance, CCTV systems and structured cabling applications in Malaysia.
Common LAN Cable Problems
Ethernet network problems can be caused by many different issues, including:
Incorrect RJ45 wiring
Open or short circuits
Poor connector termination
Damaged network cables
Unknown cable routes
Excessive cable length
PoE power problems
Difficulty identifying the correct switch port
Instead of checking these problems manually one by one, technicians can use the NF-859GS to perform several diagnostic tasks.
1. Check Cable Continuity
The first step when troubleshooting a LAN cable is usually to verify its wiring condition.
The Noyafa NF-859GS continuity testing function helps technicians check whether the cable has been terminated correctly.
This is particularly useful after installing or replacing RJ45 connectors.
Before spending time troubleshooting switches, routers or IP cameras, checking the physical network cable can help eliminate one of the most common causes of network failure.
2. Measure Network Cable Length
The NF-859GS supports cable length measurement from approximately 2.5 to 200 metres.
Cable length information is useful when technicians need to understand the existing cable installation or estimate the position of a possible fault.
For cables installed above ceilings, inside walls, under raised floors or through cable trays, this function can save considerable troubleshooting time.
3. Trace and Identify the Correct Cable
Imagine opening a network cabinet containing dozens of similar Ethernet cables.
Finding the correct cable manually can take time, especially when the cables are not properly labelled.
The NF-859GS provides a cable scanning function that helps technicians trace and identify the target network cable.
This makes it useful for:
Server rooms
Network cabinets
Office buildings
CCTV installations
Schools and universities
Factories
Warehouses
Commercial buildings
4. Identify the Connected Switch Port
Another common challenge is determining which network switch port is connected to a particular cable.
The Port Flash function can assist technicians in identifying the corresponding switch port.
This is especially useful when maintaining an existing network where cable labels are missing, incorrect or outdated.
5. Check PoE Connections
Power over Ethernet (PoE) is commonly used to supply both data and electrical power through Ethernet cabling.
Typical PoE equipment includes:
IP CCTV cameras
Wireless access points
VoIP phones
Network devices
Access control equipment
The NF-859GS includes PoE testing capability, helping technicians diagnose PoE-related connections during installation and maintenance.
For CCTV technicians, this is particularly useful when an IP camera is not powering up or communicating correctly.
6. Check RJ45 Crimping Quality
A network cable may appear normal while still suffering from poor connector termination.
Incorrect or poor-quality crimping can lead to intermittent network problems that are difficult to diagnose.
The NF-859GS provides a QC testing function that can assist technicians in checking cable and connector termination quality.
This is useful for verifying newly prepared network cables before installation.
7. Basic Fibre Troubleshooting with 10mW VFL
Modern network installations increasingly combine copper Ethernet and optical fibre infrastructure.
The NF-859GS includes a built-in 10mW Visual Fault Locator (VFL) for basic fibre optic troubleshooting.
A VFL can help technicians visually identify certain fibre continuity issues and faults.
This additional capability makes the NF-859GS useful for technicians working across mixed copper and fibre network environments.
One Tester for Multiple Network Maintenance Tasks
Instead of carrying separate instruments for every basic network troubleshooting task, the Noyafa NF-859GS combines multiple functions including:
Scan + Continuity + Length + QC Test + PoE + Port Flash + NCV + LED, together with a 10mW VFL.
This makes it a practical tool for technicians who regularly perform network installation and troubleshooting work.
Applications in Malaysia
The Noyafa NF-859GS can be used for network installation and maintenance in:
Offices
Data centres
CCTV systems
Factories
Warehouses
Hotels
Schools
Universities
Shopping centres
Commercial buildings
For Malaysian network installers and maintenance technicians, a multifunction tester can help reduce troubleshooting time while allowing several common tests to be performed with one instrument.
Looking for Noyafa NF-859GS in Malaysia?
MTM Precision supplies professional network testing, fibre optic, CCTV and technical maintenance equipment in Malaysia.
Contact us for Noyafa NF-859GS availability, quotation and product information.
Contact MTM Precision
MTM Precision Sdn. Bhd.
Showroom & Service Centre
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.
Website: www.mtmpre.com.my
Email: mtmpre@yahoo.com
WhatsApp: +6016-6607346
16 Aug 2026
