Adjusting Gain; Measuring Depth - Furuno FCV-1100L Operator's Manual

1.8

Adjusting Gain

The [GAIN] control adjusts the sensitivity of the receiver. Adjust it so excessive
noise just disappears from the screen.
1.9

Measuring Depth

Use the [▲] or [▼] key to place the VRM on the object to measure depth. Depth
is digitally displayed above the VRM.
Note: This operation is available by setting MARKER SELECT on the DISP
menu to "VRM."
Gain too high Gain proper
Examples of proper and improper gain levels
1/1
VRM (green)
49.6
m
How to use the VRM
1. OPERATIONAL OVERVIEW
Gain too low
LF
0
0
20
Depth to VRM
39.8
40
60
80
1-13