Luna OBR 6235-2 Portable Dual-Channel Optical Backscatter Reflectometer with IP65 Rating

Portable dual-channel OFDR reflectometer with IP65 rating, sub-millimeter sampling resolution and up to 500 m measurement length.

Number of optical ports: 2 ports
Measurement length modes: 100 m, 200 m, 500 m
Sampling resolution (two-point): 0.20 mm, 0.40 mm, 1.0 mm
Time-of-flight delay accuracy: ± 0.005%

Datasheet

Overview

The Luna OBR 6235-2 is the dual-channel, IP65-rated version of the OBR 6235. It is a portable, rugged optical backscatter reflectometer with backscatter-level sensitivity, built to test fiber optic links in data centers and longer networks in aerospace, naval and industrial applications. It belongs to the OBR 6200 Series.

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 against length and automatically detects RL reflection events and IL locations that exceed user-defined thresholds.

The OBR 6235 offers a standard measurement length of up to 200 m. An extended length option raises this to 500 m for precision testing of data center interconnects. The OBR 6235-2 has a sealed duplex FC/APC connector and carries MIL-STD-810G, IP65 and MIL-STD-461G ratings.

The system runs on a battery and has a touchscreen user interface, so it can be used for field maintenance and troubleshooting of deployed fiber optic systems.

Key Features

Fully portable and rugged OBR with extended length range
Track and analyze return loss (RL) and insertion loss (IL) versus length
Sub-millimeter sampling resolution with no dead zones
Measure optical path latency and length with high precision
Detect and precisely locate reflective events
Two optical channels with sealed duplex FC/APC connector
IP65 ingress protection and MIL-STD-810G / MIL-STD-461G certifications
Battery-powered with 10.1 in touchscreen user interface

Specifications

Measurement

Number of optical ports	2 ports
Measurement length modes	100 m, 200 m, 500 m 500 m with extended length option
Sampling resolution (two-point)	0.20 mm, 0.40 mm, 1.0 mm For 100 m, 200 m and 500 m modes respectively; distance between two sample points in SMF-28
Time-of-flight delay accuracy	± 0.005% Accuracy guaranteed via internal NIST-traceable HCN gas cell
Wavelength scan range	4 nm, 2 nm, 0.8 nm For 100 m, 200 m and 500 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 25 cm, 50 cm and 125 cm for 100 m, 200 m and 500 m modes, respectively
Accuracy	± 0.2 dB Measured with integration widths of 25 cm, 50 cm and 125 cm for 100 m, 200 m and 500 m modes, respectively

General

Optical output power	4 mW
Battery runtime	3 h
Battery charge time	2 h
Touchscreen display	10.1”, 1280 x 800 resolution
Data I/O ports	USB-C, RJ45 Ethernet
Optical connector	Sealed duplex FC/APC (SC/APC or FC/APC adapter patch cord) Ordering table lists an adapter cable with 2 FC/APC connectors as included
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