The advantage of VOA is that it can manually set the attenuation value, or set the output power value system to automatically match the corresponding attenuation value. And with the FMT chassis, the VOA can be monitored and managed at any time. от FS.COM 23/10/2018

Yes. The VOA is used with the FMT chassis, and its management software only has a function for remote monitoring. So if you don't need this function, then you don't have to install the software. Because configuration, viewing, and operation can be completed through the screen and buttons in the NMU master control card. от FS.COM 16/10/2018

​Hola buenos días, sí podemos ofrecer este tipo de atenuador: atenuador óptico variable 35dB/1300nm/monomode/connector FC​. Hay dos tipos: uno es atenuador mecánico y el otro es atenuador variable electrónico. El atenuador variable electrónico. Y la precisión del atenuador variable electrónico será mayor. от FS.COM 05/12/2017