Furuno CI-80 - Manual (Page 39)

35
Echo test
Checking echo display intensity
Press the right and left arrow keys. The SHIFT indication
should change with key operation, between 0 and 100.
Checking echo display range
Press the up and down arrow keys. The echo display range
should in steps of 50 between 0 and 300.
Figure 34 Sample echo test display
Panel test
Press each key on the control panel one by one. The pressed
key’s corresponding “0” on the display should change to “1”.
Figure 35 Panel test display