Es128 Chirp down vision issue

[Chuck - Raymarine - Moderator]

Bill,

The first photo shows normal operation for a sounder which had been configured to manual range. Changing to auto range or manually decreasing the range will show more of the water column. Within the second photo, clearly nothing is being plotted with the DownVision pane. Was this problem observed initially when the vessel was being propelled at a speed above trolling speed? Within the third photo, the left portion of the High CHIRP sonar does not appear to be as sensitive in plotting organics suspended above the bottom. However, the right side of the High CHIRP sonar plot is displaying the organics. What was the speed of the vessel when this snapshot was taken, and were any sensitivity adjustments made to cause the organics to be display on the right side of the plot?