FG590 Optical Variable Attenuator

FG590 handhold optical variable attenuator is used for continuously variable optical signal attenuation.

    FG590 handhold optical variable attenuator is used for continuously variable optical signal attenuation. As the attenuator is used in the laser system for the on-line testing, there, therefore FG590 can be used in the digital system of communication devices (such as: PHD, SDH) and also in the system of adopting analog modulation (CATV).

♦ Features

• Stepwise attenuating by circumgyrated dial: attenuating step 0.05dB, 2.5~60dB continuously adjustable.

• Provide with the function of displaying dB or dBm attenuating value.

• Bidirectional attenuated, Optional connect, convenient to operate.

• Alternative function of 10 minutes Auto-off without operation.

• After off the instruments, the system will have the memorizing of the attenuating value and the attenuating step, in order to restore the system back to the previous shut down state when open the instruments next time.

♦ Specifications 

Attenuating wavelength Range(nm)	1260~1650
Fiber Model	9/125um SM
Optical Connector	FC/PC
Calibrated wavelengths(nm)	1310/1490/1550/1625
Measurement Range(dB)	0~60
Resolution(dB)	0.05(xakz minimize insertion loss)
Minimize Insertion Loss(dB)	<1.5
Linearity(dB)	±0.3
Repeating(dB)	±0.2
Repeating(dB)	±0.8
Back Reflection(dB)	>35dB(typical value 40)
Max input(dBm)	+20
Displaying type	lattice 128*64 black and white, white back ground light
Rechargeable batteries(V)	7.4
Power supply adaptor(V)	7~8.5
Operation temperature(°C)	0~40
Storage temperature(°C)	-10~60
humidity	0~85%(non- condensation)
Weight(g)	450
Dimension(mm)	28×628×6

FG590 Optical Variable Attenuator