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FIBER OPTIC TESTERS

OTDR Launch Cable K-125

OTDR launch fiber in a rugged field case — fiber, length and connectors all made to order: OS2 singlemode or OM1/OM2/OM3 multimode, 500m to 2km as standard, FC/SC/ST/LC/E2000 in UPC or APC.

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Checked before it ships

Functions verified against the ordered version before dispatch — the version table on this page is the exact build list.

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Your brand on it

Neutral instrument branding as standard; labeling per order.

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Stock & small lots

Instruments are supplied to the version you order; tell us the work and we will help you spec it.

Specifications

K-125 full specification

Fiber typesSinglemode G.652D (OS2) 9/125; multimode OM1 62.5/125, OM2 / OM3 50/125
Length500 m, 1 km, 2 km standard; other lengths made to order
ConnectorsFC / SC / ST / LC / E2000 — PC, UPC or APC
LeadsInput and output leads, 1 m as standard
Typical loss<0.5 dB @ 1310 nm per 1,000 m (singlemode)
Return lossUPC ≥50 dB; APC ≥60 dB
CaseRugged hard case with carabiner clip
OTDR launch cable K-125 in hard case (fiber type, length and connectors as ordered)

In the box: the parts above, packed per unit. Applications: OTDR testing of FTTH, FTTx and backbone links · Measuring the first and last connectors of a link (launch and receive fiber) · Acceptance testing and fault location sign-off.

How a Launch Cable Works

Connect the launch cable between the OTDR and the link under test. The OTDR's pulse travels the launch fiber first; by the time it reaches the link, the pulse has settled and the instrument's dead zone sits harmlessly inside the launch fiber. The link's first connector now shows on the trace as a measurable event, with its loss readable like any other.

For the far end, add a second launch cable as a receive fiber: the last connector gets the same treatment, measured before the trace runs out. Length is chosen against the OTDR's pulse width and the link — 500 m covers most access-network work.

Between tests the fiber stays in its case: unspool only the leads, keep the connectors capped and clean, and the launch fiber's own end faces stay reference-grade — a dirty launch connector prints itself onto every trace you take.

Send an Inquiry

Ask about the K-125

Tell us the quantity and the finish or branding you need — Silvia replies personally with factory pricing (EXW).

Email: silvia@licoom.com · sales@licoom.com
WhatsApp: +86 150 6823 2998

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