The 180 DSP analyzes spectrum from 4 to 205 MHz, showing peak measurements, color-coded markers, and delta measurements. The channel plan scan also includes on-screen markers that can be adjusted to perform a tilt measurement. The channel plan scan displays the frequency response of the entire channel lineup in a color-coded bar graph of each channel, or your favorite channels in the active channel plan. In addition to average level, peak-to-valley, and in-channel tilt, the meter displays PLC constellation, level, pre/post BER, MER, decoder stress over time, and a summary for the default profile. The 180 DSP also performs an extensive set of OFDM signal measurements to enable testing in DOCSIS 3.1 deployments. This allows users to quickly analyze 64 and 256 QAM downstream channels for quality verifications or to locate impairments. The 180 DSP performs QAM carrier measurements (including deep interleave) and displays Hum, Constellation, Equalizer Tap, MER and BER. These robust and compact DOCSIS 3.1 meters are known for their long battery life.Ī dependable tool for basic cable installation needs, the 180 DSP signal level meter features a compact rugged design, easy-to-use color user interface and an unparalleled selection of digital and analog channel measurements, including DOCSIS 3.1 OFDM signal analysis. As cable networks migrate to newer technologies, and anticipating an eventual move to DOCSIS 3.1 and 1.2 GHz downstream range for all meters, the complete VIAVI meter line provides these installation and service measurement capabilities for cable service providers and contractors.
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