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NK6200 High-Performance OTDR Fiber Tester

Product Description

NK6200 High-Performance OTDR for Metro, Backbone and PON Testing

The NK6200 is a 7-inch touch-screen optical time domain reflectometer series for fiber construction, link maintenance and network troubleshooting. LinkFiber supplies the series to distributors, resellers and project buyers with configuration-based quotation support.

Do not purchase this product by the “45 dB” headline alone. The maximum dynamic range belongs to a specific 1310/1550 nm configuration; wavelength, dynamic range, dead zone and connector requirements must be stated on the purchase order.

Choose the Correct NK6200 Configuration

Configuration group	Wavelengths	Published maximum dynamic range	Typical selection question
S0–S4	1310/1550 nm	32/30, 35/33, 38/36, 42/40 or 45/43 dB	What route length, loss budget and event spacing must be resolved?
T-series	Three-wavelength combinations using 1310/1490/1550, 1310/1550/1625 or 1310/1550/1650 nm	32/30/30 or 37/35/35 dB, depending on code	Is the network dark, active, or being prepared for PON maintenance?
F1	1310/1490/1550/1625 nm	37/35/35/35 dB	Are four wavelengths required in one instrument?
M1	850/1300 nm multimode	26/28 dB	Is the installed link multimode?
SM1 / SM2	850/1300/1310/1550 nm, multimode and single-mode	26/28/35/33 or 26/28/37/35 dB	Must one tester cover both fiber types?

Exact T-series configuration codes, live-network filtering and port arrangements must be confirmed in the quotation. A maintenance wavelength by itself does not prove that an instrument can safely test an active network.

Technical Specifications

Selectable test ranges	100 m / 500 m / 1.25 km / 2.5 km / 5 km / 10 km / 20 km / 40 km / 80 km / 125 km / 260 km / 420 km
Pulse widths	3 ns / 5 ns / 10 ns / 20 ns / 30 ns / 50 ns / 80 ns / 100 ns / 200 ns / 300 ns / 500 ns / 800 ns / 1 μs / 2 μs / 3 μs / 5 μs / 8 μs / 10 μs / 20 μs
Ranging accuracy	±(0.75 m + sample interval + 0.0025% × test distance)
Loss accuracy	±0.03 dB/dB
Sample points	≥256K
Sample resolution	0.015 m–16 m
Reflection accuracy	±2 dB
Loss resolution / threshold	0.001 dB / 0.01 dB
File and analysis	SOR standard file format; 4-point / 5-point loss analysis
Refresh rate	4 Hz typical
Storage	2 GB internal, 200,000 curves; external storage 64 GB
OTDR connector	FC/UPC, interchangeable SC and ST
Interfaces	USB-A, Type-C, RJ45 LAN 10/100 Mbit/s
OPM	800–1700 nm; universal FC/SC/ST; -50 to +26 dBm or -70 to +6 dBm; ±5%
Light source	FP-LD; wavelength follows OTDR output; ≥-5 dBm; CW/270 Hz/1 kHz/2 kHz
VFL	650 nm ±20 nm; ≥10 mW; CW/1 Hz/2 Hz
Display	7-inch color LCD touch screen, 800 × 480
Battery / adapter	3.7 V, 10,400 mAh; Type-C adapter, input 100–240 V 50/60 Hz, outputs 5 V/3 A, 9 V/2 A, 12 V/1.5 A
Environment	Operating -10°C to +50°C; storage -40°C to +70°C; 0–95% RH non-condensing
Size / weight	215 × 160 × 50 mm; ≤1.2 kg

Series note: Dead zones vary by configuration: the published event dead zone is 0.5, 0.8 or 1 m and attenuation dead zone is 3.5, 4 or 6 m. Confirm the exact code rather than assigning the best value to every unit. The 420 km range is a selectable measurement window, not a guaranteed usable reach.

B2B Procurement and Remote Verification

Specify the full configuration code, fiber type, wavelengths, dynamic range and connector interface.
Provide route length, estimated loss, splitter topology, smallest event spacing and whether the fiber is active.
Before shipment, request a continuous video showing the serial number and acquisition on an agreed reference link.
Request the original SOR file and matching report; screenshots alone are not sufficient for trace verification.
Agree calibration documentation, included adapters, launch/receive fibers, language, software and warranty terms in writing.

Quotation and Related Testing Equipment

Quantity, evaluation-unit availability, lead time, packing, calibration documents and after-sales terms are confirmed per quotation. Compare other OTDR testers, add an OTDR launch cable box, or send LinkFiber your test plan.

FAQ

Q：

Which NK6200 configuration should a distributor quote?

A：

Quote from the customer's fiber type, wavelengths, route loss and event-resolution requirement. S0–S4 are 1310/1550 nm configurations; T-series and F1 add PON-related wavelengths; M1 is multimode; SM1/SM2 combine multimode and single-mode. The full code must appear on the quotation and purchase order.

Q：

Does every NK6200 provide 45 dB dynamic range?

A：

No. The published 45/43 dB value belongs to one 1310/1550 nm configuration. Other configurations have different wavelength-specific values. Do not advertise the series maximum as the specification of every unit.

Q：

Can the NK6200 safely test live PON fiber?

A：

Only when the selected configuration has the required filtered test port and its input limits and wavelength isolation are confirmed. A 1625 or 1650 nm option alone is not proof of safe live-network testing.

Q：

Why are launch and receive fibers needed with an NK6200 OTDR?

A：

They allow the instrument to characterize the first and last connections outside its dead zones. Match fiber type, connector polish and length to the tested link.

Q：

How can overseas buyers verify an NK6200 before shipment?

A：

Request a continuous video showing the serial number, exact configuration, clean connections and acquisition on a documented link. Obtain the original SOR trace and matching report with agreed settings.

Q：

Can one NK6200 test both single-mode and multimode fiber?

A：

Only the appropriate mixed-fiber configuration should be ordered. SM1/SM2 list 850/1300/1310/1550 nm. A single-mode S- or T-series instrument does not replace a multimode OTDR.

Q：

What should be included in an NK6200 B2B quotation?

A：

Include configuration code, quantity, wavelengths, dynamic range, connector, adapter plug, accessories, software/language, calibration documents, warranty terms, packing, lead time and the agreed acceptance procedure.

Inquiry

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