NK‑4000D OTDR Fiber Tester

The NK‑4000D OTDR is a professional handheld fiber optic diagnostic tool designed for FTTH installation, backbone network construction, maintenance, and emergency repair. With a 4.3‑inch capacitive touch screen and 12 integrated functions, it delivers precision, versatility, and reliability in the field.

🔑 Key Features

• Integrated Functions: Auto OTDR, Expert OTDR, Event Map, Optical Power Meter (OPM), Light Source (LS), Visual Fault Locator (VFL), RJ45 cable tracker, cable sequence, cable length, optical loss test, flashlight, optional end‑face detection.
• Dynamic Range: 26/24 dB (dual wavelength).
• Wavelengths Supported: 1310 ±20 nm / 1550 ±20 nm.
• Event Blind Zone: 2.5 m; ATT Blind Zone: 8 m.
• Test Range: 500 m to 100 km.
• Pulse Width: 3 ns to 20 µs.
• Accuracy: ±(1 m + sampling interval + 0.005% × test distance).
• Linearity: ±0.05 dB/dB.
• Loss Resolution: 0.001 dB.
• Display: 4.3″ IPS TFT LCD, 800×480 resolution, multi‑touch.
• Storage: 8 GB internal memory, ≥200,000 curves.
• Battery: 4000 mAh polymer lithium, >12 h continuous test, >20 h standby, USB Type‑C charging, power bank support.
• Interface: FC/UPC standard (SC/ST interchangeable).
• Additional Functions: RJ45 cable length ≤300 m, digital tracking ≤300 m, optical loss test, frequency ID CW/270/330/1k/2kHz.

📦 Package Includes

• NK‑4000D OTDR host unit
• Adapter & battery (included)
• USB data cable
• 8 GB TF card (software & manual)
• User manual (built‑in OTDR guide)
• SC adapter
• Calibration certificate & service card
• Cleaning cotton slices (10 pcs)
• Instrument backpack

⚙️ Technical Specifications

• Size: 173 × 109 × 45 mm
• Weight: ≤500 g (battery included)
• Operating Temperature: –10 to 50 °C
• Storage Temperature: –40 to 70 °C
• Humidity: 0–95% non‑condensing

✅ Warranty Information

This product comes with a 1‑year manufacturer warranty. Universal Fiber Solutions ensures genuine NK‑4000D OTDR units, warranty coverage, and customer support for usage guidance.