Why FTTH Contractors Need the NOVKER NK281 Fibre Optic Light Source Malaysia

FTTH contractors need more than a fusion splicer to complete a reliable fibre installation. After the fibre has been terminated or spliced, the link must be tested to confirm that the optical signal can pass through with acceptable loss.

The NOVKER NK281 Stable Light Source, paired with a compatible optical power meter, provides an economical solution for checking the total end-to-end loss of an FTTH fibre link.

Its additional RJ45 network-cable testing functions also make it useful for technicians who handle both fibre and copper cabling at customer premises.

Why Visual Inspection Is Not Enough

A fibre cable may appear properly installed while still experiencing excessive optical loss.

Possible hidden problems include:

Dirty fibre connectors
Poor fusion splices
Excessive fibre bending
Damaged patch cords
Incorrect adaptors
Crushed drop cable
Poor connector termination
High-loss mechanical splices

A visible red-light test can help identify certain faults, but it does not provide a reliable measurement of the total optical loss.

To determine whether the complete link performs correctly, the contractor needs a stable light source and optical power meter.

How the NK281 Supports FTTH Testing

The NK281 sends a controlled optical signal into one end of the fibre.

An optical power meter connected at the opposite end measures the received power. The technician compares this result with the reference measurement to determine the total insertion loss in dB.

The test can confirm whether the combined loss from the fibre, connectors, adaptors and splices remains within the required link budget.

This is useful for:

New FTTH installation
Fibre activation preparation
Customer complaint investigation
Drop-cable replacement
Post-splicing verification
Fibre distribution box maintenance
Building riser-fibre testing
End-to-end link acceptance

Suitable Wavelengths for FTTH Work

FTTH networks commonly use single-mode fibre.

For controlled end-to-end loss testing, contractors frequently require:

1310nm
1550nm

Testing at both wavelengths provides better information than testing at only one.

The 1550nm wavelength is generally more sensitive to bending-related loss. When the loss is normal at 1310nm but unusually high at 1550nm, the technician should inspect the cable route for tight bends, compression or poor cable management.

The NK281 is available in different wavelength configurations. Confirm the actual wavelengths before ordering.

NK281 Must Be Used with an Optical Power Meter

The NK281 is the transmitting instrument. It does not independently display the total link loss.

A complete test requires:

NK281 Stable Light Source at one end
Optical power meter at the other end
Clean reference patch cords
Correct optical adaptors
Suitable testing procedure

Both instruments must be set to the same wavelength.

For example:

NK281 output: 1310nm
Optical power meter setting: 1310nm

Selecting different wavelengths can produce inaccurate results.

Typical FTTH Testing Procedure

Clean all connectors

Clean the light-source port, optical power meter port and reference patch cords before testing.

Connector contamination is one of the most common reasons for high or unstable readings.

Set the correct wavelength

Select the required wavelength on the NK281 and set the optical power meter to the identical wavelength.

Establish the reference

Connect the light source directly to the power meter using a clean reference cable. Record the reference power or establish a 0dB reference using the power meter.

Connect the FTTH link

Connect the NK281 to one end of the installed fibre and the power meter to the opposite end.

Record the loss

Wait for the reading to stabilise. Record the insertion loss and compare it with the project’s permitted loss budget.

Repeat at the second wavelength

Where required, repeat the procedure at 1550nm and compare the results.

What Can Cause Excessive FTTH Loss?

When the measured loss exceeds the expected limit, check:

SC/APC connector cleanliness
Damaged drop cable
Tight bends near the termination box
Poor mechanical connectors
Incorrectly prepared fibre ends
Fusion-splicing quality
Splitter loss
Adaptor condition
Patch-cord quality
Incorrect reference settings

The expected loss must account for all components in the link.

A PON splitter introduces intentional optical loss. Therefore, a fibre route passing through a splitter cannot be judged using the same loss expectation as a direct point-to-point fibre.

Can NK281 Test a Live PON Network?

A standard stable light source is mainly intended for controlled testing where the technician injects a known signal into the fibre.

Testing a live PON network is different because several optical wavelengths may already be present for upstream and downstream communication.

A suitable PON optical power meter should be used when the objective is to measure live PON signals separately.

Use the correct instrument for the job:

NK281 plus optical power meter: Controlled end-to-end fibre-loss measurement
PON power meter: Live PON signal measurement
OTDR: Distance-based fault and event analysis
VFL: Visible checking of short-distance faults and fibre continuity

Why the RJ45 Functions Matter to FTTH Installers

An FTTH technician may complete the fibre connection but still need to troubleshoot the customer’s internal Ethernet network.

A service problem can be caused by:

Incorrect RJ45 wire sequence
Open network-cable conductor
Short circuit
Damaged Ethernet cable
Excessive cable length
Poorly terminated network plug
Internal cabling rather than the fibre connection

The NK281’s network-cable testing capabilities allow technicians to perform basic RJ45 checks without immediately changing to another tester.

This makes the unit practical for installers working from the fibre termination point to the customer’s router and internal network.

NK281 vs Basic Optical Light Source

A basic optical light source may only provide one or two optical wavelengths.

The NK281 offers a broader field-service role by combining stable optical output with network-cable testing functions.

This is particularly valuable for:

Small FTTH installation teams
CCTV and network contractors
Building maintenance technicians
Contractors handling mixed fibre and copper cabling
Technicians who want to reduce the number of separate tools carried

A dedicated professional optical light source may still be preferable when specialised wavelength configurations or formal testing requirements apply.

Does Every FTTH Technician Need an OTDR?

An OTDR is extremely useful for locating breaks, bad splices and other events by distance. However, it is more expensive and requires the technician to understand how to interpret an OTDR trace.

A smaller contractor may begin with:

Stable light source
Optical power meter
VFL
Fibre cleaning tools

An OTDR can be added when the company needs advanced fault location, longer-distance testing or complete trace documentation.

Professional installation teams may carry both testing solutions.

Recommended NK281 FTTH Test Package

A practical package can include:

NOVKER NK281 Stable Light Source
NOVKER Optical Power Meter
1310/1550nm configuration
SC/UPC and SC/APC adaptors as required
Suitable reference patch cords
Visual Fault Locator
Fibre connector cleaner
Carrying case

Confirm whether the network uses UPC or APC connectors before preparing the package. Connecting incompatible polished connector types can cause high loss and may damage the connector surfaces.

Who Should Buy the NK281?

The NK281 is suitable for:

FTTH installers
Fibre optic subcontractors
Internet service contractors
Network and CCTV installers
Building cabling companies
Telecom maintenance personnel
Fibre training centres
Internal technical teams

It is particularly attractive to technicians who regularly work with both fibre optic and RJ45 network cables.

Important Questions Before Ordering

Before purchasing the NK281, confirm:

Which wavelengths are included?
Is the application single-mode or multimode?
Which optical connector adaptors are supplied?
Does the power meter support the same wavelengths?
Are suitable reference patch cords included?
Is RJ45 length measurement required?
Will the instrument be used on active or inactive fibre?
Does the project require an OTDR trace?

MTM Precision can recommend an appropriate setup based on the customer’s FTTH application and testing requirements.

Contact MTM Precision

Contact us for the NOVKER NK281 Stable Light Source, optical power meters, PON testers, VFLs, fibre identifiers and OTDRs in Malaysia.

MTM Precision Sdn Bhd
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.

Website: www.mtmpre.com.my
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com