Enables technicians to install and troubleshoot copper-based single pair and bonded pair VDSL2 and ADSL2+ circuits the right-way -- dual ended with UltraFED IIB.

Dual-ended copper testing with an UltraFED IIB can isolate customer-affecting fault conditions that otherwise go undetected during turn-up and installation or routine copper troubleshooting.  The UltraFED IIB connects to the far end of copper pairs under test while a single technician controls it remotely using the VIAVI HST-3000 or ONX-580.


  • Reduces back-and-forth drive time to change line conditions Provides line terminations and remote test capabilities
  • Built for the future -- isolates crosstalk for VDSL2/ADSL2+ bonded pairs
  • Thru-mode operation takes customers out of service only when necessary
  • Greatly simplifies fault isolation and identification for less-skilled technicians
  • OneCheck™ diagnostics identify faults up to three times faster


  • Second-pair operation to accurately assess the effects of near-end crosstalk (NEXT) and far-end crosstalk (FEXT)
  • Remotely, from the VIAVI HST-3000, provide strap (short), open, drop battery, transmit tones and trace tones
  • View pair endings with TDR Helper, enabled on the HST-3000, which provides alternating short and open to the pair
  • OneCheck Copper Test Suite provides simple diagnostic tests that isolate typical faults a technician encounters every day
    • OneCheck Copper for DSL - Determines overall pair(s) health over the DSL technology provided  with thresholds and filters set by technology
    • OneCheck Series Fault - Check for series fault presence, typically  from splice failures
    • OneCheck Bridged Tap - Determines bridged tap (lateral) existence on the pair with distance to  and length of tap
    • OneCheck TrueLength - Provides actual pair length by correlating capacitive, resistive and TDR  loop measurements
    • OneCheck RFL Pretest - Indicates whether a resistive fault was  found and identifies to run next to precision locate it
    • OneCheck Kick Test - Quick copper-check to assess the pair's health prior to final test
    • OneCheck Shield Test - Determines resistance from the HST-3000 to the UltraFED IIB


Available Downloads


Brand VIAVI (formerly JDSU)
Shipping Weight 0.4000kg
Shipping Width 0.200m
Shipping Height 0.004m
Shipping Length 0.300m
6 Months Return to Base Warranty



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