Electroline's model DVM7500 probe, shown at Expo last week, is designed to continuously scan all digital channels being transported on an HFC network's coaxial segments and report to the OSS impairments that can impact the subscriber's quality of service. It monitors both the RF performance of the access network, but also can dive into the MPEG transport stream.The DVM can be installed at many points around the coaxial network and even at the subscriber premises to aid in localizing the root cause of network degradations. It's environmentally hardened, built on a DOCSIS 3.0 platform, integrates with back office systems and does not require separate communication facilities.