You can widen or narrow the beam. A wider beam sees more; a narrower one separates targets better.
At a glance
- Horizontal beam width: 1 to 5, receive beam by bearing
- Vertical beam width: 1 to 5, transmit and receive
- Lower values are wider; higher values are narrower
About 5 minutes. Part of Tune the picture.
Horizontal
Changes the receive beam width by bearing, 1 to 5. Lower values widen the beam; higher values narrow it.
Vertical
Changes the beam width for both transmit and receive, 1 to 5, with the same rule: lower is wider, higher is narrower. A narrower vertical beam is easier to aim at a particular depth but is easier to miss with.
Trade-off
Wide gives you a bigger slice of the water and a stronger overview. Narrow gives you sharper separation between a fish and the bottom or surface clutter. The right setting depends on what you are chasing.
Watch it done
Furuno USA publishes these CSH-10 videos. They play from YouTube when you press play.
Operator Orientation Part 2: cursor information, vertical beam width and tilt operation
Check yourself
Three questions
Sources
- CSH10 Explanation of User Settings: Horizontal beam width and vertical beam width
This lesson summarizes Furuno's public documents in our own words. Limits and settings differ by model and software version, so your own manual and your installer have the last word. OmniCSH is an independent project, not a Furuno program.