NK4000 Mini Smart OTDR with OPM, OLS, VFL, RJ45 Cable Tester, FC/SC/ST APC & UPC Connectors

Up to 100km Accurate Testing: Supports long-distance, high-precision fiber measurement for flexible field applications.
Professional OTDR: Provides accurate fiber analysis with the ability to display curves, event lists and MAP view to locate faults.
Auto OTDR: Test automatically at the push of a button without manually configuring the system.
Optical Power Meter (OPM): Power measurement of multiple wavelengths and frequency recognition (CW/270/330/1k/2kHz).
Optical Light Source (OLS): Stable output that can be adjusted for continuity or modulated modes for testing.
Visual Fault Locator (VFL): Quickly locate faults in a fiber and application multitasking.
RJ45 Cable Tester: Test cable length and sequence up to 300 meters downrange with a robust anti-interference digital design.
Multi-Connector Compatibility: Accepts FC/SC/ST, APC and UPC connectors for broad applications.
4.3” Touchscreen: Multi-point touch allows easy zooming and navigation of the touchscreen.
Large Storage: 8GB of memory with the ability to store over 200,000 test records for longer-term use.
Long Battery Life: Built-in 4000mAh battery provides over 8 hours of continuous operation.
File Management: Quick export and management of test data through a USB.
One-Touch Screenshot: Save the screen images to document results.

Mini Smart OTDR	NK4000-S	NK4000-D	NK4000-F1 (Live Test)	NK4000-F2 (Live Test)	NK4000-T (Live Test)
Fiber Type	G.652 SM
Wavelength	1550nm±20nm	1310/1550nm±20nm	1310nm±20nm	1550nm±20nm	1610nm±20nm
Max Dynamic Range	24dB	26dB/24dB	26dB	24dB	22dB
Event Dead Zone	2.5m
Attenuation Dead Zone	8m
Test Range	500m/1km/2km/4km/8km/16km/32km/64km/100km
Pulse Width	3ns/5ns/10ns/20ns/30ns/50ns/80ns/160ns/320ns/500ns/800ns/1μs/2μs/3μs/5μs/8μs/10μs/20μs
Distance Accuracy	±(1m+sampling interval+0.005%×test distance)
Linearity	≤0.05dB/dB
Sampling Points	16k–128k
Sampling Resolution	0.05m–8m
Reflectance Resolution	0.001dB
Threshold Limit	0.001dB
Distance Resolution	0.001m
Refractive Index	1.00000–2.00000
Reflectance Accuracy	±3dB
File Format	SOR standard
Test Mode	4-point/5-point
Optical Interface	FC/UPC (optional SC, ST)
Refresh Rate	3Hz (typical)
Multi-tasking	Supported

Optical Power Meter (OPM)

Parameter	Value
Test Distance	<300m

Parameter	Value
Display	4.3-inch 480×480 IPS TFT-LCD
Power Supply	AC/DC adapter 100–240V, 50/60Hz, 0.6A; Built-in 4000mAh Li-battery
Continuous Working Time	≥8 hours (typical)
Charging Time	≤12 hours
Interface	USB Type C
Storage	8GB (stores over 200,000 test records)
Operating Temperature	-10°C~+50°C
Storage Temperature	-40°C~+70°C
Humidity	0–95% non-condensing
Dimensions	173mm × 109mm × 45mm
Weight	<0.6kg