Provides Upstream Spectrum, Downstream Spectrum, Full Scan, and Ingress Resistance measurement modes that view and analyze CATV channels.

UPSTREAM SPECTRUM

High levels of ingress noise enter a CATV system through damaged or otherwise improperly shielded coaxial cable or related components. This noise can reduce signal quality and prevent an effective installation. Upstream Spectrum measurement mode views and analyzes noise on the upstream path (return path). It identifies the frequency at which ingress occurs and displays the noise level value. Upstream spectrum measurements must be conducted out-of-service. Initial measurements typically occur at the ground block with the home disconnected from the network.

DOWNSTREAM SPECTRUM

Downstream Spectrum measurement mode (optional purchase required) allows you to view the entire CATV downstream spectrum frequency range (40 MHz to 1 GHz) in 50 Mhz (default) frequency spans with a dynamic range of 60 dB. Within each frequency span a wavy measurement line (trace) is formed and continuously updated. The Downstream Spectrum measurement mode is a very comprehensive troubleshooting utility that reveals ingress spikes on the forward path as brief as 1 ms.

FIELD VIEW

Field View measurement mode (optional purchase required) analyzes and displays ingress and distortion on the upstream path (return path) as viewed by PathTrak or Phasor system at the node and the headend. It identifies the frequency at which ingress occurs and displays the level value. Test results can be stored for later reference.

INGRESS RESISTANCE

The Ingress Resistance measurement mode allows for a 20 Mhz fixed span. Within each frequency span a wavy measurement line (trace) with 201 frequency points is formed and is continuously updated. The total Downstream spectrum frequency range extends from 88 MHz to 108 MHz.