PON OTDR K-800PON

A PON network comprehensive tester for live FTTx work: a 1625 nm in-service OTDR with 44 dB of dynamic range that shoots through a 1×128 splitter, one-click Smart Link maps, and a power meter, light source, VFL and fiber inspection in the same rugged handheld.

Live-fiber OTDR at 1625 nm: the filtered in-service wavelength tests a working PON without taking subscribers down, and 44 dB of dynamic range reaches the far end of long, heavily split networks
Through a 1×128 splitter: enough range and resolution to verify the whole branch — feeder, splitter and drops — from one end, so acceptance testing does not need an access visit at every home
Smart Link one-click analysis: no pulse-width or range setup — press test and the link comes back as a map, events in order with the splitters identified in FTTx mode, each event with its location and loss
1310/1550 nm testing as well: standard OTDR wavelengths for offline plant, plus a built-in 1310/1550 nm power meter for in-service troubleshooting on single-mode fiber
Four more tools on board: a 1310/1550 nm light source (CW / 270 Hz / 1 kHz / 2 kHz), a 650 nm visual fault locator good for 3 km, storage for more than 10,000 traces on SD card, and an optional 400× fiber inspection probe for connector end faces
Built for the field: dual-color molded housing with armored corners shrugs off cabinet and pole work, and the lithium battery runs at least 8 hours of continuous testing

Ask for Pricing WhatsApp K-800PON Datasheet (PDF)

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-800PON full specification

Test wavelengths	1310/1550 nm and 1625 nm (±20 nm)
Dynamic range	34/32 dB (1310/1550 nm); 44 dB (1625 nm)
Event dead zone	1.2 m (1310/1550 nm); 0.8 m (1625 nm)
Attenuation dead zone	6 m (1310/1550 nm); 3.5 m (1625 nm)
Measurement range	0.3–200 km
Linearity	±0.05 dB/dB
Loss threshold / resolution	0.05 dB / 0.001 dB
Sampling resolution	0.125–8 m
Ranging accuracy	±(0.75 m + 2.5×10⁻⁵ × distance + sampling interval)
Real-time refresh	1 s (typical)
Data storage	SD card (≥8 GB), more than 10,000 traces
Light source	1310/1550 nm, CW / 270 Hz / 1 kHz / 2 kHz modulation
Power meter	1310/1550 nm calibrated, −40 to 0 dBm, ±0.02 dBm accuracy
Visual fault locator	650 nm, up to 3 km
Fiber inspection (optional probe)	400× magnification, 0.5 µm resolution
Battery	Lithium, ≥8 hours continuous work
Operating temperature	−10 °C to +50 °C
Dimensions	263 × 75 × 203 mm
Weight	1.784 kg

K-800PON PON OTDR main unitPower adapterCarry case

In the box: the parts above, packed per unit. Applications: In-service PON troubleshooting at 1625 nm without interrupting subscribers · FTTH acceptance testing through 1×64 and 1×128 splitters · Locating breaks, bad splices and macrobends on feeder and distribution fiber · Verifying splitter ports and branch lengths from the OLT end · Connector end-face inspection before sign-off, with the optional probe.

Why PON testing needs its own OTDR

A PON is not a point-to-point link: one feeder fiber fans out through splitters to dozens of homes, and each splitter stage costs 10 to 20 dB of loss before the drop fiber even starts. A general-purpose OTDR runs out of dynamic range, or drowns the branch events in its dead zones. The K-800PON pairs 44 dB of range with a 0.8 m event dead zone at 1625 nm, so individual events stay visible after one or two splitter stages.

1625 nm matters because it is the maintenance wavelength: live PON traffic runs at other wavelengths, so a filtered 1625 nm test signal can be injected into a working network and measured without disturbing it. Smart Link then does the interpretation — one click measures the link and draws it as a map of splitters, splices and faults, ready to hand to the customer or file with the acceptance report.

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