Luna OBR 4600 User Manual

OPTICAL BACKSCATTER REFLECTOMETERTM

(Model OBR 4600)

The Luna OBR 4600 offers unbeatable testing and troubleshooting capabilities now at unprecedented measurement speeds.

KEY FEATURES AND PRODUCT HIGHLIGHTS

•Easily locate, identify and troubleshoot macro-bends, splices, connectors and breaks

•Locate Insertion Loss points at every point in the network or assembly – eliminate cut-back

•Look inside components to evaluate each interface for RL and IL

The Luna OBR 4600 is part of Luna’s award winning

Optical Backscatter ReflectometerTM product line. Designed for component and short-run network testing and troubleshooting, the OBR 4600 enables ultra-high resolution reflectometry with backscatter-level sensitivity. With spatial resolution as fine as 10 microns, zero dead-zone, options for integrated temperature and strain sensing and extended device mode, the OBR 4600 offers the ultimate in fiber diagnostics.

•Measure 30 m with 10 µm resolution in less than 7 seconds

•Continuously measure a 1 m segment at up to 3 Hz

•Test and troubleshoot short-run networks (< 2 km)

•Automate pass/fail verification of fiber assemblies

•Monitor distributed temperature and strain profiles along network or inside a component or module

MEASUREMENT PERFORMANCE HIGHLIGHTS

•-130 dB sensitivity

•70 dB dynamic range

•2 kilometer length range with no dead-zone

•< 0.05 dB insertion loss resolution

www.lunainc.com	[e-mail]
3157 State Street | Blacksburg, VA 24060	Support phone: [phone]

	PARAMETER				SPECIFICATION					UNITS
	Maximum Device Length:
	Standard Mode					30 or 70				meters
	Long Range Mode12					2000				meters
	Spatial Resolution (two-point)1:
					10 µm over 30 meters
					20 µm over 70 meters
					1 mm over 2 km
	Dead Zone:
					Equals 2-pt spatial resolution
	Wavelength Range2:
					1270-1340 or 1525-1610					nm
	Wavelength:
	Resolution (max)					0.02				pm
	Accuracy3					±1.5				pm
	Integrated Return Loss Characteristics:
	Dynamic range4					70				dB
	Total range					0 to -125				dB
	Sensitivity					-130				dB
	Resolution5					±0.05				dB
	Accuracy5					±0.10				dB
	Integrated Insertion Loss Characteristics:
	Dynamic range6					18				dB
	Resolution5					±0.05				dB
	Accuracy5					±0.10				dB
	Group Delay:
	Accuracy					1.0				ps
	Distributed Sensing7,12,13:
	Spatial Resolution8					±1.0				cm
	Temperature Resolution9					±0.1				C
	Strain Resolution9					±1.0				µstrain
	Measurement Timing10	Standard		Fast11		Spot Scan11
	5 nm scan time	3	1.6			0.3				s
	Time vs. wavelength range	2.1 s+0.14 s/nm	1.3 s+0.06 s/nm			0.15 s+0.02 s /nm			-
	Long Range (2 km) Scan Time					20				s
Specifications are for single-mode operation.			8 Spatial resolutions listed are ideal to get the temperature
For multimode operation, specifications are nominal.				and strain resolutions listed; they are not minimums or
1 Over entire length range.				maximums.
2 Ranges are nominal.			9 Temperature and strain resolutions are calculated from
3 Accuracy maintained by an internal NIST-traceable HCN				spectral shift of Rayleigh scatter using 1 GHz = 0.8 C=
	gas cell.			6.58 µStrain. [Othonos and K. Kalli, Fiber Bragg
4 For the 2000 m option, return loss dynamic range is 60 dB.

				Gratings (Artech House, Boston, 1999)].
				OBR 4600
	5	With integration width of 0.5 m	10	Combined scan and analysis time in high-resolution
	6	The insertion loss dynamic range is the one-way loss
				mode. Times are for 30 m scan mode.
		that can be suffered before the scatter level of standard
			11	Times are with laser tuning speed set at 100 nm/s.
		SMF (~ -100 dB/mm) is lower than the noise floor
			12	Extended range mode and distributed sensing are
		(~ -118 dB/mm).
				upgrade options
	7	Distributed sensing uses Rayleigh spectral shift method
			13	Maximum standard sensing length is 70m. Limited

and is relative to reference scan.	sensing is available in extended range mode. Contact
	your Luna representative for more information.
	CLASS 1 LASER PRODUCT

©Luna Innovations Incorporated, Roanoke, VA All rights reserved.

OBRTM is a trademark of Luna Innovations Incorporated.

LTOBR4600 REV. 004 02/13/2014