VIAVI CWDM OTDR Modules – 4100-Series


Moduły OTDR CWDM z serii 4100 to idealny wybór dla utrzymania i rozwoju sieci C-RAN, DAS, CWDM.

VIAVI 4100-Series CWDM OTDR Modules

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

Connect the VIAVI Solutions™ 4100-Series CWDM OTDR family to successfully deploy and maintain

C-RAN, DAS, CWDM, and fronthaul networks. CWDM OTDR-family optical performance, combined with the T-BERD/MTS platform’s suite of testing features, ensures that testing jobs are performed right—the first time.

Testing features include:

  • Automatic multitest configurations
  • Easy-to-read summary results table with pass/fail analysis
  • Quick trace interpretation with SLM (optional)
  • FastReport™ onboard report generation


  • Characterize fiber links with exact CWDM wavelengths
  • Qualify C-RAN, DAS, and any mobile fronthaul network
  • Troubleshoot live networks with in-service testing capability
  • Verify end-to-end continuity using the continuous wave source function
  • Eliminate OTDR interpretation errors with Smart Link Mapper (SLM) without comprising test times


  • 8 or 10 CWDM wavelengths in 1 module and 18 wavelengths in 2 modules
  • Optimized performance for access and metro applications
  • Integrated CW light source with modulation capability
  • Instantaneous traffic detection


  • Qualification of fronthaul access networks
  • Testing new CWDM 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 430g (0.95 lb)
Dimensions (w x h x d) 128 x 134 x 40 mm

(5 x 5.28 x 1.58 in)

Distance Units Km/m/mile/ft
Group index range 1.30000 to 1.70000

in 0.00001 steps

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 4 cm
Accuracy ±1 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
Cursor resolution From 0.001 dB
Attenuation linearity ±0.03 dB/dB
Threshold 0.01 to 1.99 dB in 0.01 dB step
Reflectance/ORL Measurements
Mode Automatic or manual
Reflectance accuracy ±2 dB
Display resolution 0.01 dB
Threshold –11 to –98 dB in 1 dB steps
Storage Bellcore/Telcordia compatible Version 1.1 and Version 2.0
CWDM Wavelengths1 1271/1291/1311/1331/1351/1371/1391/


1551/1571/1591/1611nm +/-3nm

Pulsewidth 10 ns to 20 μs
Dynamic range2 35dB
Event dead zone3 1.5 m
Attenuation dead zone4 5 m
Continuous Wave Light Source Wavelengths: same as OTDR
Output power -3.5 dBm
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 larg- est
  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 CWDM OTDR Modules – 4100-Series