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Wandel & goltermann ola-25 optical attenuator
Wandel & Goltermann OLA-25 Optical Attenuator
The OLA-25 is a continuously variable optical attenuator designed for attenuating optical signals carried by single-mode fibers operating at 1300 and 1500 nm.
The attenuator module is a neutral density filter placed in the broadened light beam between the input and output connections. The attenuation value is variable between 3 and 60 dB and depends on the position of the filter, which is set using the rotary control on the front panel.
The actual attenuation includes the losses of both test ports. It is displayed with a resolution of 0.1 dB on the LC display. The display error remains at <+0.2 dB. This accuracy is obtained by individual calibration of the display to match the attenuation filter characteristic. The OLA-25 is factory calibrated at 1300 and 1550 nm. It is set to the corresponding nominal wavelength using the slide switch.
* Powers-on, unchecked otherwise.
* Overall unit is in good condition except battery cover is missing.
* Does not include any connector adapters.
