The PER Meter is a new generation of precision optical detection instruments. It can provide 1~8 channels extinction ratio measurements of optical fibers, polarization-maintaining devices, polarization angle of light sources, polarization-maintaining fibers and optical components, power consumption, and advanced axis angles with remarkable precision and speed. It features large PER measurement range, high- precision stability, powerful and easy to use software, and multi-channel tests of temperatures and insertion loss.

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