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568XL Optical Power Meter

Instruments designed for Fiber Optic Cable Testing. The instrument family consists of individual devices (optical power meters, 850/1300nm LED sources, 1310/ 1550nm Laser sources, Visual Fault Locator) and complete Insertion Loss Test Sets. These full feature general purpose fiber optic instruments are easy to operate and economically priced to outfit all technicians performing fiber optic installation and maintenance.


Product Specification


Detector Type

2 mm Indium Gallium Arsenide (InGaAs)

Calibration Wavelengths

980nm, 1310nm, and 1550nm

Power Range

+25 to -30dBm (1310nm and 1550nm); +25 to -27dBm measurement

range at 980nm. To avoid thermal damage, limit exsposure high

power (greater than +23dBm) to less than 30 minutes.;

+25 to -27dBm (980nm only)

Linearity at:

(1310nm and 1550nm)

+25dBm to +22dBm          ±1.0dB
+22dBm to +18dBm          ±0.5dB

+18dBm to +10dBm          ±0.2dB

+10dBm to -30dBm          ±0.05dB

Absolute Accuracy

±0.25dB at calibration conditions

Wavelength Dependence

975 to 985nm          0.025dB/nm

1270 to 1330nm      0.0033dB/nm

1500 to 1625nm      0.0016dB/nm

Polarization Dependence




Power Requirements

Two AA size 1.5V batteries

(approx. 100 hours continuous operation)

Connector Interface


Environmental Specification

Operating Temperature

-15º C to +55º C

Storage Temperature

-35º C to +70º C


0 to 95% non-condensing


72 x 142 x 35 mm




E 61010; EN50081-1:1992; EN55011, Group1,

Class A EN50082-1: 1992 IEC 801-2, -3, -4


  • Easy to use - three buttons control all functions
  • Long battery life
  • Loss measurements in (dB); power measurements in (dBm)
  • 0.01dB measurement resolution
  • Snap on connector interface adapts to FC, SC and ST connectors. Contact Greenlee for other available adapters.
  • User selectable auto shut-off
  • Rugged and splash-proof
  • Economically priced
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