Point 
 Rotating disk with step attenuator: step sizes 0.05dB 
 Has to show the relative attenuation values ??or absolute attenuation values 
 10 minutes without operation of the optional automatic shutdown?? 
 After shutdown, the attenuation step sizes in the system memory before shutting down, and then boot the system to return to the pre-shutdown state 
 Instrument Model CX-801 

 Attenuation wavelength range 
 ? 1260 ~ 1650nm 

 Fiber Type 
 9/125um single-mode fiber 

 Connector Type 
 FC / PC 

 Calibration wavelength 
 1310/1490/1550/1625 

 Attenuation range 
 2.5 ~ 60dB 

 Resolution 
 0.05dB 

 Insertion loss 
 <2.5dB 

 Linearity 
 ± 0.5dB 

 Repeatability 
 ± 0.2dB 

 Overall attenuation accuracy 
 ± 0.8dB 

 Back reflection 
 > 35dB (typical value of 40dB) 

 The maximum permissible input 
 +20 DB 

 Display Type 
 Dot-matrix 128 * 64 black and white, white backlight 

 Rechargeable battery 
 7.4V 

 Power adapter 
 7 ~ 8.5V 

 Operating Temperature 
 0 ~ 40 ℃ 

 Storage Temperature 
 -10 ~ 60 ℃ 

 Humidity 
 0 ~ 85% (no condensation) 

 Weight 
 450g