VIAVI OTDR Modules 4100-Series


Moduły OTDR z serii 4100 to wydajne rozwiązanie, które w połączeniu z szerokim zakresem funkcji pomiarowych platformy MTS idealnie dopasowuje się do wyzwań jakie stawiają sieci optyczne w dowolnej architekturze.


4100-Series DWDM OTDR Module

For T-BERD®/MTS-2000, -4000 V2, -5800 Platforms

As xWDM technology adoption continues to grow in access networks for broadband services, technicians require comprehensive and lightweight xWDM test tools. Consisting of a single module, the VIAVI C-band DWDM OTDR solution enables cable, wireless, and telco operators to perform complete end-to-end link characterization and troubleshooting of DWDM and hybrid CWDM/DWDM networks.

The DWDM OTDR module’s optical performance, combined with the complete suite of T-BERD/MTS platform testing features, ensures that comprehensive testing is done right the first time.

Standard testing features include:

  • Auto-setting of the acquisition parameters
  • Summary results table with pass/fail analysis per the international standards
  • Comprehensive event diagnosis
  • FastReport onboard report generation

Key Benefits

  • Characterize fiber links with exact DWDM wavelengths
  • Troubleshoot live networks with in- service testing capability
  • Verify end-to-end continuity through MUX/DEMUX and ROADMs using the continuous wave source function
  • Smart Link Mapper (SLM) eliminates OTDR interpretation errors without impacting test times

Key Features

  • Tunable DWDM OTDR module at ITU-T

G.694.1 wavelengths

  • C-band – 1528 nm to 1568 nm
  • 44 dB dynamic range for access and metro applications
  • Integrated CW light source with modulation capability
  • Instantaneous traffic detection


  • Metro & access rings, business to business, advanced C-RAN fronthauls & next gen FTTH networks
  • Qualification of fronthaul access networks
  • Testing new DWDM wavelength routes without disrupting traffic on active channels
  • Pinpointing faults and their exact locations while in service
do pobrania

Laser safety Class 1 (IEC), Class 1 (21CFR)
Weight 510 g (1.12 lb)
Dimensions (w x h x d) 128 x 134 x 40 mm (5 x 5.28 x

1.58 in)

Operating and Storage temperature Refer to platform’s datasheet
Distance units Km/m/mile/ft
Group index range 1.30000 to 1.70000 in 0.00001


Number of data points Up to 256,000 data points
Distance Measurements
Mode Automatic or dual cursor
Display range From 0.5 up to 260 km
Display resolution 1 cm
Cursor resolution From 1 cm
Sampling resolution From 32 cm
Accuracy ±0.75 m ±sampling resolution

±1.10-5* x distance (excluding

group index uncertainties)

Attenuation Measurements
Mode Automatic, manual, 2-point, 5-point

and LSA

Display range From 1.25 dB to 55 dB
Display resolution 0.001 dB
Attenuation linearity ±0.03 dB/dB
Threshold 0.01 to 5.99 dB in 0.01 dB step
Cursor resolution From 0.001 dB
Reflectance/ORL Measurements
Mode Automatic or manual
Reflectance accuracy ±2 dB
Display resolution 0.01 dB
Threshold –11 to –99 dB in 1 dB steps
Storage Bellcore/Telcordia compatible Version 1.1 and Version 2.0
OTDR and Light Source
Wavelengths1 C-band tuning –

C62 to C12 (1527.99nm – 1567.95nm)

@ 100GHz

Channel spacing 50/100/200GHz
Pulsewidth 10 ns to 20 µs
Dynamic range2 44 dB
Event dead zone3 1.5 m
Attenuation dead zone4 4 m
Light source Wavelengths Same as OTDR
Light Source Output Power 0 dBm
Light Source Operating Modes5 CW, 270 Hz, 330 Hz, 1 kHz, 2 kHz
Automatic traffic detection Yes
In-service testing Yes
  1. Laser at 25°C and measured at 10 µs.
  2. The one-way difference between the extrapolated backscattering level at the start of the fiber and the RMS noise level, after 3 minutes averaging and using the largest
  3. Measured at ±1.5 dB down from the peak of an unsaturated reflective event using the shortest
  4. Measured at ±0.5 dB from the linear regression using a FC/PC reflectance and using the shortest
  5. Subtract 3 dB when used in modulation mode (270/330/1/2 kHz).

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VIAVI OTDR Modules 4100-Series