NEUBRESCOPE NBX-5101U

Long-Range Single-Ended Measurement Model

BOTDR (Brillouin) Measurement
Max. Measurement Distance: 100km
Highest Spatial Resolution: 50cm
Single-ended

The NBX-5101 has been upgraded to the NBX-5101U with a redesigned enclosure of a different size.

Specification

Laser Wavelength	1550 ± 2nm
Distance Range	100m ~ 100km
Measurement Frequency Range	9 ~ 13GHz
Range of strain measurements	-30,000 to +40,000με (-3% to +4%)
Temperature Measurement Range	-150 °C ~ +600 °C (fiber dependent)
Measurement Frequency Scan Step	5, 10, 20, 50 MHz
Readout Resolution	5 cm (default), 2.5cm (minimum)
Sampling Points	600,000 (default), 3,000,000 (maximum)
Average Count Settings	2^8 to 2^24 (incl. 2^16 hardware counting)
Pulse width	5ns	10ns	20ns	50ns	100ns	200ns	500ns	1000ns
Spatial resolution	0.5m	1m	2m	5m	10m	20m	50m	100m
Function	BOTDR
BOTDR Dynamic Range (dB)^*1	3dB	5dB	8dB	12dB	15dB	16dB	22dB	24dB
BOTDR Measurement Distance (km)^*2	10km	15km	25km	40km	45km	50km	70km	80km
Function	COTDR
COTDR Dynamic Range (dB)^*1	10dB	13dB	16dB	20dB	23dB	26dB	30dB	30dB
COTDR Measurement Distance (km)^*2	27km	40km	50km	60km	70km	80km	80km	80km
Strain Accuracy (1σ)^*3	20με		15με
Temperature Accuracy (1σ)^34	1.0 ℃		0.5 ℃
Repeatability^34*5	10 με / 0.5℃		7.5 με / 0.25℃
Fiber Channel	2
Suitable fiber	Single mode optical fiber
Fiber Connector	FC/APC (factory default) / SC-APC (factory option)
Input/Output Interfaces	USB 2.0 x2, USB 3.0 x2, LAN x2, displayport x1
Power Supply	AC 100~240V, 50/60 Hz, 350 VA
Laser Class	Class 1 (IEC60825-1 : 2001)
Dimensions / Weight	approx. 450(W)×658(D)×295(H) mm / 35 kg
Operating Temperature	10~40 ℃, Humidity below 85 % (no dew condensation)
Storage Temperature	0~50 ℃
Place of Production	Japan
Updated: 2026/04/22 1 Based on 2¹⁵ average cycles. 2 Based on average fiber loss of 0.3 dB/km using single mode fiber. 3 Based on the measurement of strain-free, UV-coated fiber. 4 Based on the measurement of strain-free, UV-coated fiber and in constant temperature environment. *5 Maximum standard deviation of measurement value in 5 consecutive measurements for 100 consecutive points.