Abstract: An apparatus can include a detector configured to detect a burst event for a selected frequency of a digital input signal having a predetermined bandwidth. The detector can provide a burst trigger, in response to detecting the burst event relative to a threshold, and provide other burst data for the detected burst event. A signal analyzer can be configured to measure signal information for another selected frequency of the digital input signal in response to the burst trigger. The signal analyzer can provide corresponding analysis data based on the measured signal information, the burst trigger, the other burst data, and the corresponding analysis data can be stored in memory.

Abstract: A demodulator can include an ingress exciser configured to remove ingress noise from a burst mode digital input signal that is above a predetermined threshold and resides within a narrowband. An adaptive equalizer can be configured to adaptively equalize an estimate of the signal provided from the ingress exciser and to provide an adaptively equalized signal. An ingress predictor can be configured to subtract an estimate of remaining predicted ingress noise from the adaptively equalized signal to provide a resultant signal that is substantially free of the ingress noise.

Abstract: An apparatus can include a detector configured to detect a burst event for a selected frequency of a digital input signal having a predetermined bandwidth. The detector can provide a burst trigger, in response to detecting the burst event relative to a threshold, and provide other burst data for the detected burst event. A signal analyzer can be configured to measure signal information for another selected frequency of the digital input signal in response to the burst trigger. The signal analyzer can provide corresponding analysis data based on the measured signal information, the burst trigger, the other burst data, and the corresponding analysis data can be stored in memory.

Abstract: A demodulator can include an ingress exciser configured to remove ingress noise from a burst mode digital input signal that is above a predetermined threshold and resides within a narrowband. An adaptive equalizer can be configured to adaptively equalize an estimate of the signal provided from the ingress exciser and to provide an adaptively equalized signal. An ingress predictor can be configured to subtract an estimate of remaining predicted ingress noise from the adaptively equalized signal to provide a resultant signal that is substantially free of the ingress noise.

Abstract: According to the present invention, methods and apparatus are provided to allow efficient switching of cable lines from failed line cards to protect line cards. Line cards may be arranged in multiple protect and active groups supporting both upstream and downstream transmission frequencies. A combined electromechanical and solid state switching fabric is provided to efficiently allow reassignment of cable lines to line cards.

Abstract: According to the present invention, methods and apparatus are provided to allow efficient switching of cable lines from failed line cards to protect line cards. Line cards may be arranged in multiple protect and active groups supporting both upstream and downstream transmission frequencies. A combined electromechanical and solid state switching fabric is provided to efficiently allow reassignment of cable lines to line cards.