Are Higher Data Rates Stressing Your Old Coax Infrastructure?

August 29, 2019

The traditional coax infrastructure for moving PCM data has outlived its usefulness as data rates approach and exceed 10 Mbps. At these higher data rates, coax cable impedance mismatches, patch panels, coax switches, improper terminations and damaged cable dielectrics degrade the signal to the point where data cannot reliably be recovered at the destination. This results in increased bit error rates, frame sync loss and ultimately loss of critical data. In those cases where clock and data are carried over separate coax paths, this degradation can lead to increased skew between the signals resulting in unreliable clocking of the data.

Fortunately, Telemetry over IP (TMoIP) provides a future-proof solution to this problem. Based on commercial IP network technology, TMoIP converts serial PCM clock and data signals into packets which are carried over an IP network. Today, it is very common to have 1 Gbps Ethernet IP networks, with 10 G, 40G and 100G networks available and soon to become common. Commercial IP networking markets have been driving down the costs, driving up the data rates and improving reliability and robustness. TMoIP devices can easily support individual PCM streams of 40 Mbps or more, with aggregate data rates on a 1 Gbps network approaching 800 Mbps.

As packet telemetry technologies such as IRIG 106 Chapter 7, IRIG 106 Chapter 10/11 and INET increase in popularity, the Network Centric Telemetry Range Architectures will be ideally positioned to support them. Future-proof your telemetry range infrastructure; contact GDP Space Systems to learn how our next-gen Telemetry over IP products can support your missions today and tomorrow. View the Network Centric Range Architecture technical presentation here.