Sunrise Telecom (OTC:SRTI) has announced the release of a firmware upgrade for its CM3000 Cable Modem Network and Spectrum Analyzer and CM3800 Sweep System and DOCSIS 3.0 Cable Modem Network Analyzer.Available for new or field deployed CM3000 and CM3800 test platforms, the new firmware update (version 2.23) features include a spectrum display with a 0.3 μSec sample rate and 100 mSec sweep rate to capture ingress, impulse noise or electrical interference in the upstream path. In addition, equalizer stress, frequency response and group delay measurements have been added to the cable modem and digital video analyzer functions.