NK4000 Mini Pro

The NK4000 Mini Pro OTDR is a professional-grade optical testing instrument built for installation, maintenance, and advanced fiber diagnostics. Featuring a 4.3-inch capacitive touchscreen, it integrates OTDR, OPM, LS, VFL, and RJ45 cable testing functions. With up to 200km testing range, high dynamic range options, and intelligent analysis software, it ensures accurate, efficient, and reliable fiber network troubleshooting in demanding environments.

Product Features

• Expert OTDR: Professional measurement, curve display, and precise simulation analysis
• Auto OTDR: No complex settings, one-key automatic test
• OPM supports CW / 270Hz / 1kHz / 2kHz frequency identification
• VFL and LS can run in background, enabling multitask testing
• LS supports CW modulation mode output with adjustable power
• RJ45 cable tracker for digital tracing and cable sequence testing
• RJ45 cable sequence and length test, up to 300m
• One-click screen capture for quick saving of test results
• Multi-task support and curve zoom-in/zoom-out functions
• Event list and face detection
• Optional loss test and insertion loss test
• Computer management system for report generation
• Wide operating temperature range

Specifications

OTDR

Model
NK4000-S1
NK4000-S2
NK4000-S3
NK4000-F1 (Live Test)
NK4000-F2 (Live Test)
NK4000-F3 (Live Test)

Type
G.652 SM

Wavelength
1310nm ±20nm
1550nm ±20nm
1625nm ±20nm (Live Test models)

Dynamic Range
NK4000-S1 – 32/30dB
NK4000-S2 – 35/33dB
NK4000-S3 – 37/35dB

Event Blind Zone
0.8m

Attenuation Blind Zone
2.5m

Test Range
500m / 1km / 2km / 5km / 10km / 20km / 40km / 80km / 120km / 160km / 200km

Pulse Width
3ns / 5ns / 10ns / 20ns / 30ns / 50ns / 80ns / 160ns / 320ns / 500ns / 800ns / 1µs / 2µs / 5µs / 10µs / 20µs

Range Accuracy
±(1m + 0.005% × Test Distance)

Linear Display
0.05–32km

Sample Resolution
0.01m

Loss Resolution
0.001dB

Loss Threshold
0.02dB

Reflectance Range
0–80dB

Reflectance Accuracy
±3dB

File Format
SOR Standard File Format

Loss Analysis
4-point method / 5-point method

Laser Safety Level
Class II

Connector
FC/UPC (Interchangeable SC, ST)

Refresh Rate
≤3s

Averaging
Adjustable

OPM

Wave Range
800nm–1700nm

Test Range
-70dBm to +10dBm

Resolution
0.01dB

Uncertainty
≤0.5dB

Connector
Universal 2.5mm adaptor

LS

Wavelength
1310nm / 1550nm

Laser Type
FP-LD

Output Power
≥ -5dBm

Mode
CW / Modulated

Connector
FC/UPC (Interchangeable SC, ST)

VFL

Wavelength 650nm ±20nm

Output Power
10mW

Mode
CW / 2Hz

Connector
FC/UPC (Interchangeable SC, ST)

RJ45 Cable Sequence & Length

Test Distance
≤300m

Mode
Digital tracking

Others

Display
4.3-inch IPS Capacitive Touch Screen

Power Supply
Rechargeable lithium battery

Battery Working Time
≥12 hours

Data Storage
Internal memory + USB export

Data Interface
USB

Working Temperature
-10°C to 50°C

Storage Temperature
-40°C to 70°C

Relative Humidity
<95% (Non-condensing)

Weight
Approx. 0.9kg

Size
Compact handheld design