General Function	Optical Fiber Distributed Acoustic Acquisition System
Laser Wavelength	1550 ± 0.1 nm
Interrogation Range*1 (Total Fiber Length, TFL)	50 m ～ 50 km
Spatial Resolution	2.8 m
Spatial Sampling  Interval	0.2 m
Gauge Length	0.2 m
Number of Sampling points	250,000 (maximum)
Interrogation Rate	500 times/s ～ 5 K times/s
Frequency Range (Nyquist Frequency)	1 Hz ～ 2.5 kHz
Pulse width	Chirp signal 2 µs
Dynamic Range	38 dB
Sensitivity*2*3	12 Pico Strain / -38 dB nε2 /Hz
Internal Store	240 GB
Input-output fiber	Single mode optical fiber
Fiber Connector	E2000 / APC
Power Supply	AC100～240V 50/60Hz 250VA
Laser Class	Class 1 (IEC60825-1: 2001)
Dimensions / Weight	450(W)×658(D)×295(H) mm / 38 kg
Operating Temperature	10～40℃, Humidity below 85% (no dew condensation)
Storage Temperature	0～50℃
Place of Production	Japan

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 　　 　

For the detail of NBX-S4000B and NBX-S400C, please contact us. *1 Based on average fiber loss of 0.2 dB/km using single mode fiber (UV-coated). *2 Based on the measurement of strain free, UV coated fiber. *3 Based on the measurement of strain free, UV coated fiber and in constant temperature environment.