Ando AP-9851 PCM Jitter Modlation Oscillator AP9851. AKA Yokogawa.

Ando AQ1338 LD Stabllized Light Source
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Ando AQ3105A - Optical Variable Attenuator. 1310 / 1550 nM. 0-65 dB attenuation. FC Connectors.

Ando AQ7155 Mini Handheld OTDR 1.31& 1.55 UM Singlemode

Ando AQ4320D Tunable Laser Source 1520-1620nM. +7 dB Output Level.

Ando AQ6317 Optical Spectrum Analyzer. 600 to 1750 nm. High Resolutions and Accuracy

Ando AQ6330 Compact Full Featured Portable Optical Spectrum Analyzer. 1200-1700 nM

Yokogawa Ando AQ6331 Portable Optical Spectrum Analyzer. 1200-1700nM wavelength. High Performance in a compact package. 50 GHz DWDM capable.