PNM Near Home Impairments Resolution with Signal Leakage Tools
The objective of the field study was to determine if a direct correlation exists specifically between Nimble This PNM near home impairments data and leakage. More specifically:
What percentage of the time can Nimble This PNM near home impairments, such as drop and in home wiring impairments identified by PNM, be used to proactively identify drop, near home / in home impairments that will have cable or connector integrity issues that the subscriber will notice in the immediate future and these impairments can be located / fixed using ComSonics M3/QAM Compass solution?
Due to time limitations and the need to prearrange subscribers in home approval the field study selectively identified 15 homes that exhibited: 1. Very poor modem performance, i.e. Red Modems, and 2. Specifically focused on impairments either near or inside the home. For this study modems that exhibited OSP problems were not selected.
The data that was used to select the target subscribers included:
- Failing readings on the Nimble This PNM application
- Poor In-Channel Frequency Response (ICFR) on the DOCSIS Return Channels
- Pre EQ Tap response with bad levels of micro-reflections on digital pre-eq taps 9 and 10
- Modems operating in an upstream partial-mode condition (i.e. running on one upstream channel instead of two)
- FM Ingress on downstream
The findings exceeded the predicted expectations and can be summarized as follows. Download to find out more.