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The JDSU MTA300 attenuator cassette is used with a MTAS7 mainframe. It is designed to provide standard 60 dB attenuation range with good resolution for power equalization applications such as eight-channel DWDM systems. The inherent linear design and low polarization sensitivity allow the attenuators to be inserted directly at the output of an array of laser sources to stabilize or adjust optical power for each channel. Each attenuator cassette is available with a retractable connector plate to facilitate connector cleaning and maintenance and a beam block to simulate broken fiber conditions. The JDSU MTA300 is controlled from the front panel keypad or by the GPIB remote interface.The commands are SCPI compatible, and LabVIEW drivers simplify remote control. The individual attenuators are etalon-free for low distortion and feature low polarization dependent loss (PDL) and return loss. Specifications. Operating wavelength range: 1200 to1700 nm. Fiber type: 9/125 µm. Attenuation range: > 60 dB. Attenuation resolution: 0.05 dB nominal. Attenuation repeatability: ± 0.005 dB typical, ± 0.02 dB maximum. Attenuation change rate: < 6 s, 0-60 dB. Attenuation accuracy: ± 0.05 dB typical, ± 0.1 dB maximum. Insertion loss: 2.2 dB typical, = 2.5 dB maximum. Return loss: > 60 dB typical, > 57 dB maximum: Maximum optical input power: 200 mW. Recalibration period (recommended): 2 years. Polarization dependent loss: = 0.05 dB typical, = 0.10 dB maximum. Polarization dependent loss at 1545 to1565 nm: <= 0.03 dB typical, <= 0.05 dB maximum. Beam block isolation: > 90 dB. Beam block speed: < 20 ms.
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