Optical Cable Identifier K-200
Finds the one cable you want inside a manhole or duct full of identical ones: tap the cable, and the K-200 turns the knock into a tone and a bar reading — nothing is cut, bent or frozen.
Typical work: Picking the target cable out of a crowded manhole, duct or tunnel run before cutting or splicing; Verifying cable identity where records are wrong or labels are missing; Aerial, conduit and buried routes where several operators' cables share the path; Pre-work confirmation on live cables that cannot be interrupted for identification.
Get a Quote WhatsApp UsNeutral stock in small lots, or private label made to your requirements. Prices on request — EXW factory pricing.
K-200 key features
- Non-invasive identification: the photo-elastic effect turns a gentle tap on the target cable into audio and visual signals — the fiber is never cut, bent or frozen, and live traffic on it is untouched
- Two reaches: 40 km and 100 km versions, working over a single fiber at 1550 nm, with no initial blind zone
- Reads by ear and by eye: the sound tracks how hard the cable is knocked, while the screen shows a bar chart or ECG trace — usable in a noisy street cabinet or a quiet plant room
- Works with PC, APC or cut fiber ends, and in manholes, tunnels, conduits and aerial spans alike
- 5.6-inch touch screen plus buttons, ten hours or more on the built-in lithium battery, 1.5 kg complete
K-200 specifications
| Test method | Single fiber |
|---|---|
| Wavelength | 1550 nm |
| Fiber type | Single-mode |
| Maximum test distance | 40 km or 100 km (by version) |
| Unidirectional fiber loss | 10 dB (40 km version); 30 dB (100 km version) |
| Initial blind zone | None |
| Fiber-end return loss requirement | ≤40 dB (40 km version); ≤20 dB (100 km version) |
| SNR | ≥25 dB |
| Optic connector | FC/APC |
| Display | 5.6 in LCD touch screen |
| Input | Touch screen + buttons |
| Output | Visual: bar chart or ECG display; Audio: sound tracking the knock intensity |
| Battery | Lithium 7.4 V, 10.4 Ah — ≥10 h continuous work |
| Power consumption | <6 W |
| Power supply | DC 12 V / 3 A |
| Dimensions | 65 × 150 × 235 mm |
| Weight | 1.5 kg (including battery) |
| Working temperature | 0 °C to +45 °C |
| Storage temperature | -20 °C to +55 °C |
How tap-and-listen cable identification works
Records lie and labels fall off; a duct can hold a dozen cables that all look the same. The old ways of proving which is which — cutting, bending or freezing the fiber — interrupt service and can damage the cable. The K-200 works differently: a coherent 1550 nm signal is launched into the fiber at one end, and when the cable is tapped, the mechanical disturbance changes the light through the photo-elastic effect. The instrument reads that disturbance and plays it back as sound and as a bar or ECG trace.
In practice one technician connects the identifier at the accessible end and a second walks the route, tapping each candidate cable. On the wrong cables the screen stays flat and the earpiece stays silent; on the target cable every tap answers back, louder the harder the knock. Because nothing about the fiber is disturbed, the method works on live cables — even while the fiber is under cut or splicing conditions — and the identification holds over 40 km or 100 km of route depending on the version.
Where the K-200 works
Picking the target cable out of a crowded manhole, duct or tunnel run before cutting or splicing
Part of the Fusion Splicers & Connection range — see the specifications above for the figures that matter on this work.
Verifying cable identity where records are wrong or labels are missing
Part of the Fusion Splicers & Connection range — see the specifications above for the figures that matter on this work.
Aerial, conduit and buried routes where several operators' cables share the path
Part of the Fusion Splicers & Connection range — see the specifications above for the figures that matter on this work.
Pre-work confirmation on live cables that cannot be interrupted for identification
Part of the Fusion Splicers & Connection range — see the specifications above for the figures that matter on this work.
K-200 components
- One K-200 optical cable identifier (version as ordered)
- Soft carry bag
- Earphones
- DC power adapter
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-200
Can the K-200 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-200
Tell us the quantity, and whether you want it neutral or with your brand on it.