///CS260-10 Handheld FTTH PON Troubleshooting OTDR

CS260-10 Handheld FTTH PON Troubleshooting OTDR

The CS260-10 Contractor Series Live PON OTDR is an ideal tool for fiber optic  technicians installing, activating and troubleshooting FTTx PON distribution and drop fibers from the splitter to the ONT.
The CS260-10 provides an out-of-band 1625 nm OTDR with filtered detector, enabling Live PON testing without disrupting service on an active PON. It additionally includes an integrated PON power meter to automatically detect and measure downstream 1490 and 1550 nm signal levels.
The CS260-10 is also suitable for out-of-service testing. As longer wavelengths are more sensitive to bending losses, the CS260-10 OTDR will detect excess losses induced by micro- or macro-bends.


The CS260-10 provides extremely short event and attenuation dead zones (0.8 and 3.5 m, respectively), enabling closely spaced events to be detected and measured in distribution and drop fibers. With 35 dB dynamic range, the CS260-10 is able to test through PON splitters having split ratios up to 1×64, enabling detection of poor splices or excess bending losses at the splitter.
Add optional new LinkMap® upgrade to simplify results interpretation. LinkMap displays the tested network using colored icons to represent passing or failing connectors, splices, splitters, and faults.
To further aid in locating faults within access points, splice closures or indoor cabling, the CS260-10 includes an integrated Visual Fault Locator (visible red laser).
The CS260-10 is extremely easy to use. It provides fully automatic OTDR parameter selection, automatic event table generation, and end-to-end length, loss and ORL summary. For expert users, the CS260-10 also allows full control of OTDR parameters (range, pulse width, averaging time, etc.).
Over 1000 OTDR test results may be saved in industry-standard .SOR file format. Stored OTDR results may be transferred to PC via USB port for viewing, analysis, and professional report generation using included Windows® compatible TRM® 2.0 Basic Test Results Manager software.


Size (in boot) 20.1 x 13.0 x 5.3 cm (7.9 x 5.1 x 2.1 in)
Weight 0.8 kg
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)
Power Rechargeable Li-Ion or AC adapter
Battery Life 13.5 hours, Telcordia test conditions;
12.5 hours, backlight on, continuous test
Display LCD, 320 x 240, 3.5 in (89 mm), color, high-contrast transflective with backlight and AR coating


Emitter Type Laser
Safety Class Class 1 FDA 21 CFR 1040.10 and 1040.11, IEC 60825-1: 2007-03
Fiber Type Single-mode
Available Wavelengths 1625 nm ±10 nm
Dynamic Range 35 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 120 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 1.4000 to 1.6000
Distance Uncertainty (m) ±(1 +0.005 % x distance + data point spacing)
Linearity ±0.05 dB/dB
Trace File Format Bellcore GR-196 v1.1
Trace File Storage Medium Internal memory (>1000 traces)
Data Transfer to PC USB cable
PON OTDR Modes FTTx – In Service; FTTx PON Construction, Expert, Real Time
Standard OTDR Modes Full Auto, Expert, Real Time


Fiber Type Single-mode
Available Wavelengths 1310, 1490, 1550, 1625, 1650 nm


Calibrated Wavelengths 1490, 1550 nm
Detector Type Filtered InGaA
Isolation >40 dB
Measurement Range +23 to -50 dBm
Accuracy ±0.5 dB
Resolution 0.01 dB
Measurement Units dBm or Watts (nW, μW, mW)


Emitter Type Laser
Safety Class Class II FDA 21 CFR 1040.10 and 1040.11, IEC 60825-1: 2007-03
Output Power (nominal) 0.8 mW into single-mode fiber
Modes CW, 2 Hz flashing
Wave Length 650 nm ±20 nm


  • 1625 nm, 35 dB FTTH Live PON OTDR with integrated PON Power Meter
  • Detect closely spaced events with 0.8 m event dead zone
  • Pinpoint faults using integrated Visual Fault Locator (VFL)
  • Rugged, lightweight, handheld design
  • High-contrast, backlit display easily viewed, even in direct sunlight
  • All-day battery operation without recharge or replacement
  • Instant On; Ready to test in < 5 seconds
  • Save & upload results in Telcordia .SOR file format


  • Verify FTTx PON fiber installations: Measure loss and reflectance of individual splices, connectors and splitters, as well as end-to-end length, loss and opticalreturn loss.
  • Troubleshoot Live PONs: Verify downstream PON power levels. Locate source(s) of excess loss or reflectance in distribution or drop fibers on in-service FTTx PON using out-of-band 1625 nm Live PON OTDR with filtered detector.
  • Visibly trace fibers or locate fiber bends or breaks: Use integrated VFL visible red laser to visibly detect light emanating from fiber breaks or macrobends.


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