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NK4350 Mini OTDR Fiber Tester

Product Description

NK4350 Mini OTDR for FTTH and Access-Network Maintenance

The NK4350 is a compact multifunction OTDR for G.652 single-mode fiber. LinkFiber supplies the model to distributors, resellers and project buyers who need a portable tester with OTDR, event map, optical power meter, visual fault locator, stabilized light source, optical loss testing and RJ45 cable functions.

D1 and D2 OTDR Options

Model	Wavelength	Maximum dynamic range
D1	1310/1550 nm	26/24 dB
D2	1310/1550 nm	30/28 dB

Technical Specifications

Fiber type	G.652 single-mode fiber
Event / attenuation dead zone	1.5 m / 8 m
Selectable ranges	0.1 / 0.3 / 0.5 / 1.25 / 2.5 / 5 / 10 / 20 / 40 / 80 / 125 / 260 km
Pulse widths	3 / 5 / 10 / 20 / 30 / 50 / 80 / 100 / 200 / 300 / 500 / 800 ns; 1 / 2 / 3 / 5 / 8 / 10 / 20 μs
Ranging accuracy	±(1 m + sampling interval + 0.005% × test distance)
Linearity	≤0.05 dB/dB
Maximum sample points	≥160K
Sampling / distance resolution	0.03 m–16 m / 0.001 m
Loss resolution / threshold	0.001 dB / 0.20 dB
Refractive index	1.00000–2.00000
Trace and analysis	SOR standard file; 4-point / 5-point method; 3 Hz typical refresh
OTDR connector	FC/UPC, interchangeable SC and ST
OPM	800–1700 nm; calibrated at 850/1270/1300/1310/1490/1550/1577/1625/1650 nm; 0.01 dB resolution; ±5%
OPM ranges	-70 to +6 dBm optional; -50 to +26 dBm standard; -40 to +26 dBm split optical power
VFL	650 nm ±20 nm; ≥10 mW; CW/1 Hz/2 Hz
Light source	Same wavelength as OTDR; ≥-5 dBm; CW/270 Hz/330 Hz/1 kHz/2 kHz
RJ45 functions	Length ≤300 m, digital tracking, charged/wire-pair finding supported
Display	4.3-inch 800 × 480 IPS TFT-LCD multi-touch capacitive screen
Power	100–240 V 50/60 Hz adapter, output 5 V 2 A; two 3.7 V 5000 mAh Li-polymer batteries
Storage / interfaces	8 GB, ≥200,000 entries; USB and Type-C
Environment	Operating -10°C to +50°C; storage -40°C to +70°C; 0–95% RH non-condensing
Size / weight	189 × 115 × 43 mm; ≤0.6 kg

B2B Buyer Guide

Specify D1 or D2 rather than ordering only by model name. Treat 260 km as a selectable range, not guaranteed usable reach. If live-fiber testing is required, request the exact filtered-port configuration and written input limits; marketing images show several live and non-live variants, so this function must be part of the quotation.

Remote Acceptance Before Bulk Ordering

Confirm D1 or D2, connector interface, OPM range and included functions.
Request a continuous video with serial number and a trace on a documented reference link.
Obtain the original SOR file and compare settings, event positions and measured length.
Agree launch/receive fibers, calibration document, language, accessories, warranty, packing and lead time.

Quotation and Related Products

Evaluation-unit availability and commercial terms are quotation-specific. Compare OTDR models, add an OTDR launch cable, or contact LinkFiber for a distributor quotation.

FAQ

Q：

What is the difference between NK4350 D1 and D2?

A：

Both are 1310/1550 nm G.652 single-mode configurations. D1 is specified at 26/24 dB and D2 at 30/28 dB maximum dynamic range. Select against the route loss and required margin.

Q：

Can the NK4350 test live fiber?

A：

Only a configuration explicitly supplied for live testing should be connected to an active network. Confirm the filtered port, supported service wavelengths and input-power limits in writing; not every pictured variant has the same capability.

Q：

Is 260 km the guaranteed NK4350 test distance?

A：

No. It is a selectable range. Actual usable reach depends on model, wavelength, fiber loss, events, pulse width, averaging and splitter loss.

Q：

Does the NK4350 include an optical power meter and VFL?

A：

The published functional configuration lists OPM and VFL. Confirm the selected OPM measurement range, adapters and exact package contents in the quotation.

Q：

What should distributors verify before ordering NK4350 units?

A：

Verify D1/D2, live or non-live function, connector, OPM range, display language, battery/adapter, software, calibration documentation and supplied accessories.

Q：

How can a remote buyer verify an NK4350 sample?

A：

Ask for a continuous serial-number video and trace acquisition on a documented reference link, then obtain the original SOR file and matching report. Agree acquisition settings before the test.

Q：

Can the NK4350 replace insertion-loss acceptance testing?

A：

Its light-source and OPM functions support loss testing, but the project procedure and reference method must be agreed. OTDR traces alone do not replace every end-to-end insertion-loss requirement.

Q：

What information is needed for an NK4350 quotation?

A：

Provide quantity, destination, fiber type, approximate length/loss, D1 or D2 preference, active-network requirement, connector, OPM range, reporting needs and accessory list.

Inquiry

To learn more about this product, you can submit your requirements here.