Optical Power Meter K-527 — As supplied — meter, SC adapter, batteries and manual — As supplied — meter, SC adapter, batteries and manual

Fiber Test Equipment · K-527

Optical Power Meter K-527

Absolute power and link loss on one backlit screen: -70 to +10 dBm across the seven wavelengths FTTH work actually uses, in a boot that shrugs off site knocks.

-70 to +10 dBmCalibrated wavelengths: 850 / 980 / 1300 / 1…800–1700 nmInGaAs

Typical work: Checking received power at the ONT during FTTH activation — the go / no-go number on every install; Measuring link and splitter loss with a light source, using the dB relative mode; Verifying transmitter output of ONUs, media converters and SFP modules; PON work at 1490 nm downstream and 1310 nm upstream; 1550 nm for RF-overlay and trunk checks; Acceptance records and fault triage: is the light weak at the source, or lost along the way?.

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Neutral stock in small lots, or private label made to your requirements. Prices on request — EXW factory pricing.

Features

K-527 key features

-70 dBm sensitivity is the point of this meter: after a 1:32 splitter the signal at a customer's ONT can sit below -25 dBm, and a weak drop or a dirty connector pushes it far lower — a meter that stops at -50 cannot even see the light you are troubleshooting
Seven calibrated wavelengths cover the working set: 1310 and 1490 for PON, 1550 for trunk and RF overlay, 1625 for in-service monitoring bends, 1300 and 850 for multimode premises work, 980 for pump and specialty links
One screen, three readings: wavelength, absolute power in dBm and linear power in nW together, so there is no mode-hopping while a reading settles — and the backlight (LIGHT key) keeps it readable in a dark cabinet or a sunlit street box alike
Relative loss the way installers actually use it: set ZERO on the source, and the dB key reads the loss of everything you plug in after it — splitter, splices and connectors as one number, comparable against the loss budget on the work order
FC port on top with an SC adapter in the box, so the meter meets the plant as built; auto power-off after about ten minutes saves the batteries when a test ends in a hurry
The meter rides in a silicone boot with raised guards around the port and screen: it is the difference between a knock on a ladder and a cracked instrument, and the boot is why this meter is still in kits years on
Private labeling made to your requirements — labels with your logo, part numbers and barcodes on the inner boxes and outer cartons, ready for your warehouse

Specifications

K-527 specifications

Measurement range	-70 to +10 dBm
Calibrated wavelengths	850 / 980 / 1300 / 1310 / 1490 / 1550 / 1625 nm
Wavelength range	800–1700 nm
Detector	InGaAs
Uncertainty	±5%
Display resolution	0.01 dBm (logarithmic) / 0.1% (linear)
Display	Backlit LCD showing wavelength, dBm and linear power (nW) together
Functions	Absolute power (dBm / nW), relative loss (dB) with ZERO reference, backlight, auto power-off (about 10 min)
Connector	FC port; SC adapter included
Power supply	2 × AA batteries
Housing	Meter in a protective silicone boot
Dimensions	—
Weight	—

How It Works

How a power reading is taken — and read

An optical power meter answers the simplest question in fiber work: how much light arrives here? It reports that as dBm — decibels against one milliwatt — where 0 dBm is a strong signal, -20 dBm is a healthy FTTH reading at the ONT, and every further -10 is a tenfold drop. The K-527 reads down to -70 dBm, deep past the point where service fails, so the number keeps talking while you hunt: clean a connector and watch it climb, swap a patch cord and watch it recover.

Absolute power is only half the instrument. Paired with a light source at the far end, the meter measures loss: set the reference with the ZERO key while connected straight to the source, then insert the link — splitter, splices, connectors — and the dB display reads everything the link took, as one figure. Compare it with the budget for that split ratio and span; over budget means the loss is in the plant, inside budget with a weak absolute reading means the problem is upstream of you.

Two settings decide whether the number means anything. Wavelength: the meter must be set to the wavelength being sent (the lambda key) — a 1490 nm PON signal read on the 1310 setting is off by a calibration offset, not by a little. And cleanliness: the detector window and the connector end-face are the measurement; a fingerprint on either is a loss you will chase into the plant. Clean, inspect, then measure.

Care is mostly about the port. Keep the dust cap on, blow out the adapter rather than wiping blind, and let the meter warm to the site for a minute in cold weather before trusting small differences. The auto-off exists because meters are forgotten on top of cabinets; the boot exists because they are also dropped off them.

Same Category

Compare the fiber test equipment range

Every product in this category, side by side on the figures that decide the choice. Blank cells mean the figure is not stated in our current data — ask us and we will confirm it for the model you mean.

	K-527	K-V10	K-PV1	K-340	K-350	K-535
Wavelength	—	650 ± 10 nm (visible red)	—	—	—	—
Measurement range	-70 to +10 dBm	—	-70 to +10 dBm	—	—	-70 to +6 dBm or -50 to +26 dBm (two versions)
Dimensions	—	175 × 26 × 26 mm	—	219 × 45 × 28 mm	196 × 30.5 × 27 mm	118 × 72 × 32 mm
Weight	—	53 g (excluding batteries)	—	235 g	200 g	150 g

Applications