Zhengzhou, where to sell good quality variable optical attenuator ultra Shanghai Shenzhen? Hanson Radio [Zhengzhou] Tel: 18939564786 handheld optical attenuator JW3303 JW3303 handheld optical attenuator can continuously variable optical signal attenuation. The attenuator is primarily due to the laser system for online testing, therefore, the instrument applies a digital system including communication equipment (PDH, SDH) applications, and analog modulation (CATV) system. Applications: Telecommunication CATV engineering and maintenance engineering and maintenance cabling system optical device production and research in teaching and testing optical communication optical engineering products other features: rotating disk Step Attenuation: 0.05dB step size can be displayed with a relative or absolute attenuation attenuation values value Optional 10 minutes without operating automatic shutdown after shutdown, system memory before shutting down the amount of attenuation and stepping, and then boot the system back to the state before the shutdown Specifications: Instrument Type JW3303 can be attenuated wavelength range 1260 ~ 1650nm Fiber Type 9/125um singlemode fiber connector type FC / PC calibration wavelength range of 2.5 ~ 60dB attenuation 1310/1490/1550/1625 resolution 0.05dB insertion loss <2.5dB Repeatability Linearity ± 0.5dB ± 0.2dB overall attenuation accuracy ± 0.8dB backreflection> 35dB (typical 40dB) +20 dB maximum allowable input 128 * 64 dot matrix display type black, white backlight Rechargeable battery 7.4V Power adapter 7 ~ 8.5V Operating Temperature 0 ~ 40 ℃ Storage Temperature -10 ~ 60 ℃ Humidity 0 ~ 85% (non-condensing) Weight 450g Zhengzhou Hanson Radio Communication Equipment Co., Ltd. Contact: Mr Zhu Tel: 18939564786 QQ: 1006519081 Address: Zhengzhou City, Shandong Bauhinia Street west 300 meters