Pro OTDR K-4300
The pro-tier platform: a 4.3-inch touch OTDR with intelligent link analysis, eight builds to 32 dB and 150 km — including multimode and triple-wavelength versions.
Typical work: Access, metro and backbone construction acceptance; FTTH / PON maintenance and in-service monitoring; Multimode premises and data-center link certification (K-4300M).
Get a Quote WhatsApp UsNeutral stock in small lots, or private label made to your requirements. Prices on request — EXW factory pricing.
K-4300 key features
- Eight builds: multimode 850/1300, dual-wavelength to 32/30 dB, triple-wavelength, and four live-fiber models
- 4.3-inch touch screen — trace, event map and event list on one linked screen
- Intelligent link analysis: connectors, splices, flanges and macro-bends identified automatically
- Event dead zone 1 m, attenuation dead zone 5 m, range to 150 km
- Pass/fail thresholds; up to four traces compared on screen
- Optional power meter (−50 to +26 dBm, 9 calibration wavelengths) and light source
- 8 GB memory, .sor and .jpg saving, user interface in 7 languages
- More than 10 hours per charge; works from −20 °C to +50 °C
K-4300 specifications
| Display | 4.3-inch capacitive touch screen, 800 × 480 |
|---|---|
| Event dead zone | 1 m |
| Attenuation dead zone | 5 m |
| Distance range | 0.5–150 km |
| Pulse widths | 5 ns – 20 µs |
| Loss measurement accuracy | ±0.05 dB/dB |
| Memory | 8 GB (.sor / .jpg) |
| VFL | 650 nm, >10 mW |
| Power meter (optional) | −50 to +26 dBm, InGaAs, 9 calibration wavelengths |
| Light source (optional) | Same wavelengths as OTDR, ≥−7 dBm |
| Optical interface | FC / SC / ST / LC |
| Battery | Lithium, >10 hours |
| Operating temperature | −20 °C to +50 °C |
| Dimensions | 210 × 160 × 45 mm |
| Weight | — |
Choosing a K-4300 Build
Match dynamic range to span: 28/26 dB covers most access and FTTH work; the 32/30 dB K-4300D-32 is the long-haul and high-splitter-ratio choice. The K-4300T adds 1625 nm on the same unit for bend-sensitive checks, and the K-4300M is the multimode build for 850/1300 nm premises fiber.
The F and N builds are for live networks — wavelengths and filtering chosen so the OTDR can measure while traffic runs, with an in-line optical alarm and module self-check protecting the instrument.
Every build shares the same screen logic: event map for the picture, trace for the proof, event list for the numbers. Crews trained on one K-4300 are trained on all of them.
Choose your K-4300 model
One platform, several builds. Pick the wavelength set and dynamic range for your network, and quote the model code with your inquiry — we confirm the build and lead time with your quote.
| Model | Wavelengths | Fiber | Dynamic range | VFL |
|---|---|---|---|---|
| Standard models | ||||
| K-4300M | 850/1300 nm | MM | 24/26 dB | >10 mW |
| K-4300D-28 | 1310/1550 nm | SM | 28/26 dB | >10 mW |
| K-4300D-32 | 1310/1550 nm | SM | 32/30 dB | >10 mW |
| K-4300T | 1310/1550/1625 nm | SM | 28/26/26 dB | >10 mW |
| Live-fiber models — test with signals present | ||||
| K-4315F | 1550 nm | SM | 26 dB | >10 mW |
| K-4310F | 1610 nm | SM | 26 dB | >10 mW |
| K-4325F | 1625 nm | SM | 26 dB | >10 mW |
| K-4300N | 1310/1550 nm | SM | 28/26 dB | >10 mW |
Where the K-4300 works
Access, metro and backbone construction acceptance
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
FTTH / PON maintenance and in-service monitoring
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
Multimode premises and data-center link certification (K-4300M)
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
K-4300 components
- Pro OTDR K-4300 main unit (build as ordered)
- Power adapter and USB cable
- Carry case
Documents for this model
Product Catalog 2026 — this model appears in our full-range catalog (PDF), published in the Downloads center.
User manual — if you need the manual for this model now, ask via the inquiry form below or on WhatsApp and we will send the available documents with your quote.
More fiber test equipment
Questions about the K-4300
Can the K-4300 carry our own brand?
Private labeling is made to your requirements and confirmed per order — labels with your logo, part numbers and barcodes on the tools, the inner boxes and the outer cartons, ready for your warehouse. The products most often labeled are the K-35 cleaver, the KS-1 Kevlar shears and the K-870 stripper.
Can we order a small lot, unbranded?
Yes. Neutral stock is held for the core range: small lots are welcome, you can mix models in one shipment, and restock as you sell. Prices are on request — EXW factory pricing.
Ask for a quote — K-4300
Tell us the quantity, and whether you want it neutral or with your brand on it.