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Noyes OFL280-10x FlexTester Family
Multifunction OTDR and Loss Test Set
The NOYES OFL280 FlexTester family offers an unmatched combination of fiber optic test functions, ease-of-use, portability, and value. All OFL280 FlexTester models include an integrated single-mode 1310/1550 nm OTDR with PON-optimized and standard test modes, optical power meter, 1310/1550 nm laser source, and visual fault locator.
For many users the two-wavelength OFL280-100 will provide the best balance of functionality and value. Testing at 1310 and 1550 nm is normally sufficient to certify point-to-point or FTTx PON fibers and allows the detection of macro bends. The three-wavelength OFL280-101 and OFL280-102 models add 1625 nm or 1490 nm respectively. Testing at 1625 nm allows testing of the L band. Testing at 1490 nm is required by some network operators to certify FTTx PONs. The filtered, three-wavelength OFL280-103 can certify dark fibers at 1310/1550 nm, fault-locate live FTTx PON fibers at 1625 nm, and measure FTTx power levels at 1490 and 1550 nm, all from a single test port.
The OFL280 FlexTester user interface provides operating modes suitable for a wide range of users and features a top-down menu structure that is both easy to learn and a pleasure to use.
OTDR test results may be saved as industry standard SOR files, which can be transferred to a PC for viewing, printing, and analysis using supplied Windows® compatible software.

• Rugged, hand-held and light weight (0.8 kg / 1.8 lb)
• Standard OTDR, PON OTDR, live fiber OTDR, and FTTx PON meter all from the same test port
• 0.8 m event dead zone, 3.5 m attenuation dead zone
• 34 dB dynamic range
• Fast Real Time OTDR mode
• Internal storage (>1000 OTDR traces in .SOR format)
• High-contrast display is clear and bright in any lighting condition, including direct sunlight
• Transfer test results to a PC via USB
• 10-hour operation, fast charge, Li-Ion battery
• Short power-on time (<5 sec)
• Easy to learn and use

PON OTDR - FTTx PON construction certification
Live Fiber OTDR - FTTx service turn-up and troubleshooting
Full Auto OTDR - Normal (point-to point) fiber cable construction testing and fault location
Expert OTDR - Full function OTDR for experienced users
Real-Time OTDR - Fault location, splice verification, first connector checker
End Locator - Quickly locate breaks or measure fiber length
Optical Power Meter - Measure optical power or fiber loss
Laser Source - Measure end-to-end loss or trace fibers using the tone feature and a NOYES OFI
Visual Fault Locator - Visible red laser for fiber bend/break location and tracing
Emitter Type
Safety Class
Class I FDA 21 CFR 1040.10 and 1040.11,
IEC 60825-1: 2007-03
Fiber Type
Available Wavelengths
1310/1490/1550/1625 nm
Wavelength Tolerance
±20/±20/±20/±10 nm
Dynamic Range (SNR=1)
34/32/32/30 dB
Event Dead Zone
0.8 m
Attenuation Dead Zone
3.5 m
Pulse Widths
5, 10, 30, 100, 300 ns, 1, 3, 10 μs
Range Settings
250 m to 240 km
Data Points
Up to 30,000
Data Point Spacing
5.0 cm (range < 1.5 km), Range/30,000 (range > 1.5 km)
Group Index of Refraction (GIR)
1.4000 to 1.6000
Distance Uncertainty (m)
± (1 + 0.005% x distance + data point spacing)
Trace File Format
Bellcore GR-196 V.1.1
Trace File Storage Medium
Internal memory (>1000 traces)
Data Transfer to PC
USB cable
FTTx Construction, FTTx Live Fiber
Standard OTDR Modes
Full Auto, Fast End Locate, Expert, Real Time
Size (in boot)
20.1 x 13.0 x 5.3. cm (7.9 x 5.1 x 2.1 in)
0.8 kg (1.8 lb)
Operational Temperature
-10 °C to +50 °C, 0 to 95 % RH (non-condensing)
Storage Temperature
-20 °C to +60 °C, 0 to 95 % RH (non-condensing)
Rechargeable Li-Ion or AC adapter
Battery Life
10 hours, backlight ON, continuous operation
LCD, 320 x 240, 3.5 inch (89 mm), color, high-contrast transflective with backlight and AR coating

OFL280 Features and Applications by Model
OFL280 models
Compatible with all Noyes optical power meters and laser sources (OPM/OLS), including tone and wave ID features
Compatible with Noyes optical fiber identifiers (OFI)
Integrated hi-power optical power meter
Integrated visual fault locator (red laser)
1310 nm – OTDR, PON OTDR, laser source (CW, wave ID, tone)
1550 nm – OTDR, PON OTDR, laser source (CW, wave ID, tone)
1490 nm – OTDR, PON OTDR, laser source (CW, wave ID, tone)
1625 nm – OTDR, PON OTDR
1625 nm – FTTx live fiber OTDR with filtered detector for in-service PON testing
1490/1550 nm – FTTx PON Meter (Detects and measures downstream PON power levels)
OFL280 models
Fiber Testing Applications
Point-to-point cable construction and troubleshooting
Fiber length, loss and ORL;splice or connection location, loss and reflectance;fault-location
FTTx PON construction
Fiber length, loss and ORL; splitter, splice or connection location, loss and reflectance, fault-location
FTTx customer fiber troubleshooting - dark fibers (hard faults)
Locate cable cuts, open splices, and bad connections
FTTx customer fiber troubleshooting - live fibers (marginal faults)
Locate marginal faults such as macro bends, poor splices, high-loss connections, high loss fiber sections due to water intrusion (requires live fiber OTDR)
FTTx service turn-up (commissioning)
At the ONT (customer) location, verify network power levels, and if needed, locate faults on the drop cable or customer fiber
1. Adds ability to perform OTDR and loss tests at 1490 nm. However, testing at 1310 and 1550 nm is generally all that is needed and what is recommended to test or faultlocate
FTTx PONs during construction, in other words while they are still dark