Product name：

DT-611 Handheld Optical Attenuator

Product description：

The DT-611 handheld optical attenuator is capable of continuously variable attenuation of optical signals. Since this attenuator is primarily intended for on-line testing of laser systems, it is suitable for use in digital system (PDH, SDH) applications including communication equipment and systems using analog modulation (CATV).

System functions System parameters Technical Parameters Typical application

◆More intuitive understanding of current attenuation than traditional mechanical attenuators

◆The current attenuation value is still maintained after the power is turned off.

◆ There are fast and slow adjustment modes for convenient and accurate adjustment.

◆High repeatability

◆Hand-held design is easy to carry

Model	DT-611A	DT-611B
Wavelength	800 ~ 1700 nm	1260~1650nm
Standard wavelength	1310/1490/1550/1625
Connector Type	FC/PC
Attenuation range	3 ~ 60 dB	2.5~60dB
Setting mode	Button	Rotating disk
Fiber Type	SM & MM	9/125um Single Mode Fiber
Insertion loss	< 1 dB	＜2.5dB
Return loss	> 60 dB (APC)，> 50 dB (PC)	＞35dB(40dB typical)
Accuracy	±1dB	±0.8dB
Resolution	0.1dB	0.05dB
Linearity	±0.5dB
Automatically shut down	10 minutes
Charging function	Yes
Working hours	20 hours	25 hours
Battery Type	AA Alkaline or NIHM Rechargeable Battery	7.4V