Net-MetriXs analyzer probe is a software-based application an integral part of the NET-xTVMS system, the real-time monitoring system of IPTV services. Intended for installation on customer appliance (CPU, PC, server, etc) at the customer-selected site ( example: headend ), Net-MetriXs can be optioned with monitoring of DVB-C/S/T/H, analog PAL and OTT streams. This Linux based IPTV probe is highly expandable to monitor actively from very few to several hundred multicast streams. Monitors quality of the physical and transport layers of optional DVB-C/DVB-T/ DVB-S/DVB-H/Analog PAL interfaces if equipped with the corresponding PCI-E cards. Captures and stores over 30 transport metrics including TR101290 priority 1 & 2, packet loss rate and PCR jitter, and more. All metrics have user defined alarm thresholds and presentation filters