Time Domain Reflectometer (TDR) Card
PCI-3127 - CM Technologies Inc. (CM Technologies)
The PCI-3127 is a PCMCIA-form factor TDR that can be used to identify and locate failures in installed wiring and cable systems. The instrument can make high resolution TDR measurements on circuits up to 96,000 feet (~30km) from your Windows XP notebook computer or PC using a low-voltage non-destructive test signal.