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Public-source decision guide

Dedicated optical power meter vs optical power meter + VFL + RJ45 cable tester

GUANGYAN G11 Optical Power Meter vs GUANGYAN Y9 Optical Power Meter, Visual Fault Locator and RJ45 Cable Tester

Quick answer: choose the GUANGYAN G11 optical power meter when optical power measurement and its published nine-wavelength set are the job. Choose the GUANGYAN Y9 optical power meter, VFL and RJ45 cable tester when carrying one configurable troubleshooting tool matters more. Neither is a verified performance winner.

Request G11 configuration verificationRequest the Y9 evidence checklist

Job first, feature count second

G11 is the focused measurement path; Y9 is the consolidated troubleshooting path.

The products are not higher and lower versions of one tool. The published G11 case is a dedicated meter with nine selectable wavelengths. The published Y9 case is one housing for optical power measurement, visual fault location and RJ45 cable-sequence testing. The right shortlist depends on the work you actually bill for.

Decision map comparing GUANGYAN G11 optical power meter and GUANGYAN Y9 all-in-one fiber tester.
Decision map built from the public-source bridge below. It is not a bench-test result, score, or sales ranking.

Choose G11 when

Your primary task is optical power measurement, the published 1270, 1577 or 1625 nm selections are relevant, and separate fault-location or copper-test tools are acceptable.

Choose Y9 when

Basic optical power checks, a VFL and RJ45 wire-sequence testing belong in the same service visit, and the supplier will identify the exact Y9 configuration in writing.

Choose neither yet when

You need independently verified accuracy, a current calibration certificate, a fixed detector and range, or a guaranteed service and repair turnaround before ordering.

Decision-relevant published evidence

Not independently tested: this table separates manufacturer-published positioning from evidence that still needs to be closed before a sample or order.

Swipe horizontally to compare all columns.

Buying questionGUANGYAN G11 Optical Power MeterGUANGYAN Y9 Optical Power Meter, VFL and RJ45 Cable Tester
Primary published roleDedicated optical power meterConfigurable all-in-one field troubleshooting tool
Published functionsOptical power measurementOptical power measurement, 650 nm VFL and RJ45 cable-sequence testing; mobile functions are listed as optional
Published wavelength evidence850, 980, 1270, 1300, 1310, 1490, 1550, 1577 and 1625 nmThe official manual lists selectable reference wavelengths, but the delivered range and configuration must be fixed by SKU or quotation
Main buying advantageFocused workflow and a published nine-wavelength setFewer separate tools for basic fiber and RJ45 troubleshooting
Main evidence gapRange, accuracy conditions, detector, calibration and runtime are not normalized on the reviewed product pageModel name alone does not fix range, VFL power, battery, adapters or mobile options

Review the GUANGYAN G11 optical power meter product profile

Understand what the G11 wavelength labels can mean in a network

Use the optical power meter sample acceptance checklist

Review the full GUANGYAN Y9 vs Jonard FPM-50S decision guide

Four items to put in writing

  1. The exact model, option code, detector, measurement range and connector or adapter package.
  2. Accuracy conditions, traceable calibration evidence and the recalibration path for your market.
  3. Battery type, charge method, expected runtime and every function included in the quoted unit.
  4. Warranty scope, replacement parts, repair route and service turnaround.

Primary public sources

  1. Kaiteng Communications GUANGYAN G11 optical power meter product page, accessed July 22, 2026.
  2. Kaiteng Communications download center with G11 and Y9 manuals, accessed July 22, 2026.
  3. GUANGYAN Y9 official operating manual, accessed July 22, 2026.