Optical Power Meter K-520
The slim meter of the range: the same two detector grades and eight PON wavelengths in a 26 mm body that disappears into a tool pouch.
Typical work: FTTH and FTTx installation and maintenance; Optical loss measurement for acceptance and troubleshooting; CATV and access network service work.
Get a Quote WhatsApp UsNeutral stock in small lots, or private label made to your requirements. Prices on request — EXW factory pricing.
K-520 key features
- Two detector grades: −70 to +6 dBm (A) or −50 to +26 dBm (B)
- Eight calibrated wavelengths, including 1577 nm for XGS-PON
- Slim 113 × 70 × 26 mm body, 150 g
- Linear (nW) and logarithmic (dBm) readings on one screen
- Wavelength memory, user calibration and user zeroing
- Dry-cell or rechargeable Li-ion versions
- SC / FC / ST interfaces; auto power-off after 10 minutes
K-520 specifications
| Measurement range | -70 to +6 dBm (A detector) or -50 to +26 dBm (B detector) |
|---|---|
| Display | Monochrome, backlight with auto-off |
| Power supply | Dry cell (A1/B1) or Li-ion battery (A2/B2) |
| Dimensions | 113 × 70 × 26 mm |
| Weight | 150 g |
| Detector | InGaAs |
| Wavelength range | 800–1700 nm |
| Standard wavelengths | 850 / 980 / 1300 / 1310 / 1490 / 1550 / 1577 / 1625 nm |
| Uncertainty | ±0.15 dB |
| Display resolution | 0.001 dB |
| Connector | SC / FC / ST interfaces |
| Operating temperature | -10 °C to +60 °C |
K-520 or K-510?
Both meters measure the same way. The K-520 is the slimmer body for pouch carry; the K-510 adds the high-brightness LED work light and low-light mode for cabinet work. Detector grade and power source are chosen the same way on both.
Where the K-520 works
FTTH and FTTx installation and maintenance
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
Optical loss measurement for acceptance and troubleshooting
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
CATV and access network service work
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
K-520 components
- Optical Power Meter K-520 main unit (build as ordered)
- Carry pouch
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 fiber test equipment
Questions about the K-520
Can the K-520 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-520
Tell us the quantity, and whether you want it neutral or with your brand on it.