Skip to main content

740C xWDM OTDR Series - FTBx-740C - xWDM OTDR Series

C-band DWDM and 18-wavelength CWDM tunable OTDR series for metro Ethernet, remote PHY and passive C-RAN link characterization.

Key Features

CWDM+DWDM combo available in compact FTB-1v2
C-BAND ITU DWDM grid channels 12-62 selection in a single OTDR port
18 CWDM channels covered in one OTDR port scalable to your deployments
Test through MUX/DEMUX/OADM
In-service testing of active networks
iOLM’s SFP-Safe Troubleshooting: guarantees no damage to SFP

Applications

C-RAN
Fiber Deep
Metro
Remote PHY

Specifications

Technical specifications
Calibrated wavelengths 1270/1290/1310/1330/1350/1370/1390/1410/1430/1450/1470/1490/1510/1530/1550/1570/1590/1610
Dynamic range (dB) 37 dB (model CWDM), 40 dB (model DWC)
Exchange compatibility Yes
iOLM-ready Yes
Product type Module
Test Type Fault location/Fiber characterization/Fiber length/Loss/ORL
Spec sheet

Description

This series includes one CWDM tunable OTDR module to cover all 18 CWDM channels from a single port and one DWDM tunable OTDR module to cover DWDM C-Band channels. This solution is available in the FTB-1V2, FTB-2 and FTB-4 platforms.

The 740C xWDM OTDR series has been designed with EXFO’s renowned high-quality standards to stabilize central wavelength under test, preventing any drift/leakage into adjacent channels, which would otherwise affect other valuable customers.

This OTDR is a scalable solution that can grow with your network by adding channels further down the road, hence allowing CAPEX reduction while covering your current and future needs.

The OTDR’s user-friendly interface lets the technician define a list of favorite channels over the C-Band (DWDM) or CWDM grid (CWDM) for quicker access and a more efficient test routine.

CWDM and DWDM: the answer to future bandwidth growth

CWDM and DWDM are gaining popularity for passive C-RAN or commercial services deployments such as fiber deep, Remote PHY and metro Ethernet in which each wavelength can address a specific site, such as a cell tower. Both CWDM and DWDM approaches are not mutually exclusive and co-exist in hybrid passive networks that feature DWDM over CWDM to maximize fiber capacity.

Use a xWDM tunable OTDR for:

  • Single-ended CWDM/DWDM fiber characterization
  • Validating the continuity and end-to-end loss through MUX, OADM and DEMUX, during construction
  • In-service testing using the client’s wavelengths port—without any downtime or impacting other client wavelengths
  • Troubleshooting and characterization by a single operator from the head-end 

Resources

All resources
Spec sheet
FTBx-740C xWDM OTDR Series - English (June 06, 2025)
Spec sheet
FTBx-740C xWDM OTDR Series - Français (June 06, 2025)
Spec sheet
FTBx-740C xWDM OTDR Series - 中文 (June 06, 2025)
Blog
The 5G revolution: how DWDM can accelerate deployment and level costs - English (April 14, 2020)
Reference guides
iOCC - English (February 03, 2020)
Brochures and catalogs
OTDR and iOLM selection guide - English (May 20, 2019)
Brochures and catalogs
OTDR and iOLM selection guide - 中文 (May 20, 2019)
Reference posters
Fiber deep, RPHY and DAA - English (September 15, 2020)
Reference posters
Fiber deep, RPHY and DAA - 中文 (September 15, 2020)
Brochures and catalogs
Fiber deep and Remote PHY test solutions - English (August 20, 2018)
Brochures and catalogs
Fiber deep and Remote PHY test solutions - 日本語 (August 20, 2018)
Application notes
The Fundamentals of an OTDR - English (August 24, 2011)
Application notes
The Fundamentals of an OTDR - 中文 (August 24, 2011)
Reference guides
FTBx-740C - English (December 21, 2016)
White papers
The new economic magic of DWDM in 5G fiber deployments - English (May 12, 2020)
White papers
The new economic magic of DWDM in 5G fiber deployments - Français (May 12, 2020)
White papers
The new economic magic of DWDM in 5G fiber deployments - 中文 (May 12, 2020)
Flyers and pamphlets
Beginner’s guide to OTDR testing – How to read an OTDR trace - English (November 25, 2022)
Flyers and pamphlets
Beginner’s guide to OTDR testing – How to read an OTDR trace - Français (November 25, 2022)
Flyers and pamphlets
Beginner’s guide to OTDR testing – How to read an OTDR trace - 中文 (November 25, 2022)

Support