Luna OBR 6225-2 Portable Dual-Channel Optical Backscatter Reflectometer with IP65 Rating

Rugged dual-channel OFDR reflectometer with sealed duplex FC/APC port, IP65 rating and sub-millimeter resolution for short fiber links.

Number of optical ports: 2 ports
Measurement length modes: 20 m, 50 m, 100 m, 200 m
Maximum device length: Up to 100 m, (200 m optional)
Sampling resolution (two-point): 0.080 mm, 0.10 mm, 0.20 mm, 0.40 mm

Datasheet

Overview

The Luna OBR 6225-2 is the dual-channel, ruggedized version of the OBR 6225 portable Optical Backscatter Reflectometer. It belongs to the OBR 6200 Series, which is used for precision testing of short and medium length fiber optic links and assemblies in aerospace, naval, data center and industrial networks.

The instrument uses optical frequency domain reflectometry (OFDR) to measure distributed return loss (RL) and insertion loss (IL) with sub-millimeter spatial resolution, high precision and high dynamic range. It maps reflection versus length and automatically detects RL reflection events and IL sites that exceed user-defined thresholds.

The OBR 6225-2 provides two optical ports through a sealed duplex FC/APC connector and carries an IP65 ingress protection rating, MIL-STD-810G military certification and MIL-STD-461G electromagnetic compatibility. It is a battery-powered integrated system with a 10.1-inch touchscreen user interface, intended for field maintenance and troubleshooting of deployed fiber optic systems.

The standard configuration measures up to 100 m; the OPT06225 Extended Length Option adds a 200 m measurement mode. Time-of-flight accuracy is guaranteed via an internal NIST-traceable HCN gas cell.

Key Features

Fully portable and rugged OBR
Track and analyze return loss (RL) and insertion loss (IL) versus length
Spatial sampling resolution down to 80 μm
Detect and precisely locate reflective events
Measure optical path length with high precision
Automatic event detection
Two optical channels via sealed duplex FC/APC connector
IP65 ingress protection and MIL-STD-810G certification
MIL-STD-461G electromagnetic compatibility

Specifications

Measurement

Number of optical ports	2 ports
Measurement length modes	20 m, 50 m, 100 m, 200 m 200 m mode with Extended Length Option (OPT06225)
Maximum device length	Up to 100 m, (200 m optional)
Sampling resolution (two-point)	0.080 mm, 0.10 mm, 0.20 mm, 0.40 mm For 20 m, 50 m, 100 m and 200 m modes respectively; distance between two sample points in SMF-28. Web page table lists 0.80 mm (@ 20 m length); datasheet value used
Time-of-flight measurement accuracy	± 0.005% Accuracy guaranteed via internal NIST-traceable HCN gas cell
Wavelength scan range	10 nm, 8 nm, 4 nm, 2 nm For 20 m, 50 m, 100 m and 200 m modes respectively
Center wavelength	1546.7 nm
Measurement time	10 s

Return Loss Measurement

RL dynamic range	70 dB Range between strongest reflection greater than -60 dB and noise floor
Total range	0 to -129 dB Noise floor return loss at half of maximum length
Sensitivity	-129 dB Noise floor return loss at half of maximum length
Resolution	± 0.1 dB Measured with 1 cm integration width
Accuracy	± 0.5 dB Measured with 1 cm integration width

Insertion Loss Measurement

IL dynamic range, in reflection mode	15 dB Two way loss before backscatter reaches noise floor and IL measurements are no longer possible
Resolution	± 0.1 dB Measured with integration widths of 10 cm, 12.5 cm, 25 cm and 50 cm for 20 m, 50 m, 100 m and 200 m modes, respectively
Accuracy	± 0.2 dB Measured with integration widths of 10 cm, 12.5 cm, 25 cm and 50 cm for 20 m, 50 m, 100 m and 200 m modes, respectively

General

Optical output power	4 mW
Battery	3 h runtime; 2 h charge time
Touchscreen display	10.1”, 1280 x 800 resolution
Data I/O ports	USB-C, RJ45 Ethernet
Optical connector	Sealed duplex FC/APC (FC/APC adapter patch cord)
Weight	10.1 lb (4.6 kg)
Case size	13.4 x 8.7 x 2.8 in (34 x 22 x 7 cm)

Environmental

Military certification	MIL-STD-810G
Ingress protection	IP65
Electromagnetic compatibility	MIL-STD-461G
Operating temperature	-20 to 35 °C 0 to 35 °C charging
Storage temperature	-20 to 60 °C
Operating altitude	0 to 2500 m 0 to 3000 m storage