The TW-9A Digital Optical Variable Attenuator is mainly used for the attenuation of continuous optical signal power, whose core components are imported high-performance ones to enable it to have the ability of quick regulation of attenuation value with good linearity, high accuracy, low insertion loss and attenuation locating, etc.

The body of TW-9A series products is designed to the demand of human engineering. With advanced cold molding process applied, the instrument looks attractive in shape, and is durative, reliable, easy to use, and suited to several working atmospheres.

·         Multi-wavelength application

·         Automatic power-off， Alarm and off when the battery is in the state of low power.

·         4.5 bit liquid crystal display (LCD);

·         It is allowed to set up step length correspondingly: 0.01dB, 1.0dB, and 10dB.

·         Memory of current setting.

·         Attenuation value can be set up at single step or continuously.

Parameter	Unit	Technical Index
Wavelength range	nm	800～1625 800～1700
Standard wavelength	nm	1310, 1550 850, 1300, 1310, 1480, 1550 1480, 1550
Measuring range	dB	0～60   －50～30 －70～10
Max optical input power	dB	33
Measuring accuracy		0～30dB：±0.1dB，30～50dB：±0.3dB，50～60dB：±1.0dB
Insertion loss		<2.5dB
Return loss		≥45dB
Optical interface		FC, ST, SC typed connector
Resolution	dB	0.01dB
Power source		Continuous testing time: over 6 hours 专用AC充电器（220）供电, 充电两用
Power consumption	mW	70 mW
Working temperature	℃	-10～＋50
Storage temperature	℃	-40～＋70
External dimensions	mm	55×95×190
Weight	Kg	0.4

No.	Item	Qty
1	TW-9A Digital Optical Variable Attenuator	1 set
Bundle accessories
2	Adapter	1 pc
3	FC 、ST、SC connector	Each for two
4	User manual	1 pc