OTDR K-300
A handheld OTDR sized for everyday FTTH and metro work: 1310/1550 nm, up to 120 km of range, a 3.5-inch touch screen, and 0.88 kg with ten hours in the battery.
Typical work: FTTH installation and activation — proving the drop before the subscriber visit ends; Metro, WAN and CATV cable maintenance and troubleshooting; Locating breaks and high-loss points after construction damage or rodent bites; Reconstruction work: re-certifying spans after re-splicing and re-routing.
Get a Quote WhatsApp UsNeutral stock in small lots, or private label made to your requirements. Prices on request — EXW factory pricing.
K-300 key features
- Two builds: 30/28 dB for access and drop work, or 32/30 dB with a built-in 650 nm VFL (≥-3 dBm, 3 km) for jobs that also need visible fault checks
- Touch screen plus keypad — full control on the trace, and still usable with gloves on in the cabinet
- Event dead zone 1.8 m and attenuation dead zone 10 m — close-spaced events in closures and distribution boxes still read separately
- More than 60,000 traces stored and moved out over USB; an optical communications (live signal) test is built in
- 0.88 kg and ten hours or more of continuous work — a full shift of fault calls on one charge
K-300 specifications
| Wavelength | 1310/1550 nm (±20 nm) |
|---|---|
| Light source | LD |
| Dynamic range | 30/28 dB or 32/30 dB (by configuration) |
| Display | 3.5 in TFT LCD touch screen |
| Optical interface | FC/UPC |
| Distance range | 0.3, 1, 3, 5, 10, 30, 60, 120 km |
| Pulse width | 5–20480 ns, Auto |
| Measurement duration | 15 s, 30 s, 1 min, 2 min, 3 min |
| Event dead zone | 1.8 m |
| Attenuation dead zone | 10 m |
| Distance measurement precision | ±(1 m + 5×10⁻⁵ × distance + sampling interval) |
| Data storage | >60,000 test traces |
| Communication interface | USB; SD card slot fitted |
| VFL (32/30 dB build) | 650 nm, ≥-3 dBm, test distance 3 km |
| Optical communications test | Supported |
| Dimensions | 220 × 106 × 60 mm |
| Weight | 0.88 kg |
| Power supply | Lithium battery, ≥10 h continuous working |
| Operating temperature | -10 °C to +50 °C |
| Storage temperature | -30 °C to +70 °C |
| Relative humidity | 0–95% (non-condensing) |
The everyday OTDR job, start to finish
Connect at the closure or the cabinet, choose the range that covers the span — the K-300 steps from 0.3 km for a drop to 120 km for a metro run — and let auto pulse width set itself, or dial the pulse in by hand from 5 ns to 20480 ns. The trace builds over the measurement time you pick, 15 seconds for a quick look or up to 3 minutes of averaging for a clean, low-noise read on a long span.
Reading the trace is the same craft as on any OTDR: a step down is loss at a splice or connector, a spike is a reflective event, and a spike that ends the trace is the break or the fiber end. With a 1.8 m event dead zone, two connectors a couple of metres apart in a distribution box show as two events instead of one smear — which is exactly the situation FTTH fault work throws at you. Save the trace (there is room for more than 60,000) and the next visit starts from evidence, not memory.
Where the K-300 works
FTTH installation and activation — proving the drop before the subscriber visit ends
Part of the Fusion Splicers & Connection range — see the specifications above for the figures that matter on this work.
Metro, WAN and CATV cable maintenance and troubleshooting
Part of the Fusion Splicers & Connection range — see the specifications above for the figures that matter on this work.
Locating breaks and high-loss points after construction damage or rodent bites
Part of the Fusion Splicers & Connection range — see the specifications above for the figures that matter on this work.
Reconstruction work: re-certifying spans after re-splicing and re-routing
Part of the Fusion Splicers & Connection range — see the specifications above for the figures that matter on this work.
K-300 components
- One K-300 OTDR (configuration as ordered)
- Lithium battery (fitted)
- Power adapter / charger
- 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 fusion splicers & connection
Questions about the K-300
Can the K-300 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-300
Tell us the quantity, and whether you want it neutral or with your brand on it.