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NBX-7021 Specifications  /   Catalog

General Function Separation of strain and temperature measured in single fiber,
PPP-BOTDA / BOTDR / TW-COTDR / COTDR
Function PPP-BOTDA TW-COTDR
Laser Wavelength 1550±2 nm 1530 nm~ 1560 nm
Distance Range 50m, 100m, 250m, 500m, 1km, 2.5km, 5km, 10km, 25 km
Measurement Frequency Range 9~13 GHz 192300~196000 GHz
Range of Strain Measurements -30,000~ +40,000με (-3% ~ 4%) -15,000 ~ +20,000με
 (-1.5%
~ 2%)
Measurement Frequency Scan Step 1, 2, 5, 10, 20, 50MHz 100, 200, 250, 500 MHz
Readout Resolution 5 cm (default), 1 cm (minimum)
Sampling Points 600,000 (default), 3,000,000 (maximum)
Average Count Settings 2^5~2^23 times (including hardware count 2^16 time)
Pulse width 0.2 ns 0.5 ns 1 ns 2 ns 5 ns 0.2 ns 0.5 ns 1 ns 2 ns
Spatial Resolution 2 cm 5 cm 10 cm 20 cm 50 cm 2 cm 5 cm 10 cm 20 cm
Dynamic Range*1 0.5 dB 1 dB 1.5 dB 3 dB 3 dB 0.5 dB 1 dB 3 dB 6 dB
Max. Measurement Distance*2 0.5 km 1 km 2 km 5 km 10 km 0.5 km 1 km 10 km 20 km
Optical Budget*1*8 1 dB 2 dB 5 dB 7 dB 8 dB 1dB 2 dB 5 dB 7 dB
Measurement  Accuracy(σ)*3*4 15με / 0.75℃ 7.5με / 0.35 ℃ 0.5με / 0.05 ℃
Repeatability(σ)*3*4*5 10με / 0.5℃ 5με / 0.25 ℃ 0.2με / 0.01 ℃
Measurement Accuracy for Hybrid mode*9 10με / 0.5 ℃
Repeatability for Hybrid mode*9 5με / 0.25 ℃
Measurement Time*6 5 seconds (minimum) 60 seconds (minimum)
Input-Output FIber Single mode optical fiber
Fiber Connector FC-APC / SC-APC (factory option)
Suitable Fiber Single mode optical fiber
Interface USB 2.0 x4, LAN x2, RGB x1
Power Supply AC100~240V 50/60Hz 250VA
Laser Class Class 1 (IEC60825-1: 2001)
Dimensions / Weight 456(W)×485(D)×286(H) mm / 30 kg
Operating Temperature 10~35, Humidity below 85% (no dew condensation)
Storage Temperature 0~50
Place of Production Japan
(2018/06/18)
*1 Based on 2^15 average cycles (TW-COTDR) / Based on 2^15 average cycles in progressive measurement mode (PPP-BOTDA).
*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 with strain-free, UV-coated fiber and in constant temperature environment.
*5 The maximum standard deviation of measurement value in 5 consecutive measurements for 100 consecutive points.
*6 The settings of 50 m distance range, 2^14 count settings, 41 scanning steps excluding the time for Pulse Adjustment.
*7 The settings of 50 m distance range, 2^14 count settings, 401 scanning steps excluding the time for Pulse Adjustment.
*8 Within the allowable range adjusted by the optical power excluding the case of nonlinear phenomina.
*9 The measurement mode of PPP-BOTDA and TW-BOTDR used with conditions of (1)-(8) applied.
*1-*5 are all based on a frequency scan step of 5 MHz for PPP-BOTDA and with Pulse Adjustment and Auto Frequency Adjustment on.
*1-*5 are all based on a frequency scan step of 250 MHz for TW-COTDR and with Pulse Adjustment and Auto Frequency Adjustment on.


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