Furuno CH-37 manual Heading Alignment, Horizontal beamwidth

Horizontal beamwidth

When the user wishes echoes to be displayed in high resolution, turn R40 on pcb 06P0192 clockwise to sharpen horizontal beamwidth. Do not turn it excessively clockwise, or an echo which should be displayed as a single solid mass may become hollow or split into smaller, fewer masses. Normally, set R40 at the mid- point of its travel.

JP2

HI LO

Photo No. 2058

Figure 3-1 Transceiver unit, cover opened

06P0192

R61

R40

3.3Heading Alignment

1.Locate a target (buoy, etc.) in the bow direction and display it on the screen at close range. The heading alignment is correct when the target is displayed at 12 o’clock on the screen.

Heading

Buoy

12 o'clock position

When on-screen target is skewed right, transducer heading is skewed left.

Figure 3-2 Checking heading alignment

3-3