Videotek TVM9100PKG - Eye Pattern Observation

General Operation
TVM Series Installation and Operation Handbook 45
Copyright © 2008, Harris Corporation
Figure 3-16 to Figure 3-18 display the Eye pattern graticules.
Figure 3-16. Eye Pattern Graticule
Figure 3-17. Eye Pattern Graticule at Zoom 0V
Figure 3-18. Eye Pattern Graticule at Zoom 800 mV
Eye Pattern Observation
The waveform displayed can show both amplitude variations and timing variations.
The combination of these “closes” the decision window for determining whether a bit
received is “1” or “0.” Common errors including overshoot, bandwidth limitations, and
ringing are easily observed with the Eye Pattern display and provide indications of the
general quality of the transmission channel and source.