The 860 DSPi is a versatile, high-performance, multifunctional and portable signal analyzer. This Trilithic cable tester can be upgraded and updated with introduction of new services by just using an internet download, usually via Trilithic's free update website. The 860 DSPi features a built–in DOCSIS 3.0 cable modem that balances critical transmissions quickly and efficiently. The DSP technology of this Trilithic cable tester improves productivity by giving quick and accurate level measurements. This portable signal analyzer uses QPSK and QAM measurements, reverse path tester to speed up maintenance and effective troubleshooting. With easy-to-read display and easy to learn interface, the 860 DSPi gives a cost-effective solution to improve system reliability with less repair time.