Adjusting The Gain; Basic Menu Operation - Furuno CH-250 Operator's Manual

1.7

Adjusting the Gain

The [GAIN] control adjusts the sensitivity of the receiver. Normally, the control is adjusted so
that the bottom echo is displayed in reddish-brown mixed with red. Initially set the gain between
"4" and "6" and then fine tune depending on fishing ground, etc.
1.8

Basic Menu Operation

The menu, consisting of six menus, mostly contains items which once preset do not require
frequent adjustment. Below is the procedure for basic menu operation.
1. Press the [MENU] key to open the menu.
Note: Either PRESET (default setting) or SHORT-CUT appears between ES and SYS at
the top of the screen depending on the setting of CUSTOM KEY on the SYSTEM
SETTING 1 menu, and they set the function of the custom keys [1], [2], [3]. For
further details see pages 5-3 through 5-7.)
MENU
DELETING TRACK
WHITE MARKER
SIG LEVEL
COLOR
BKGD COLOR
BEARING READOUT
: SELECT
Too Low
Figure 1-5 How to adjust the gain
COM1 COM2
NO
OFF
OFF
16
2
RELATIVE
: CHANGE
Figure 1-6 COM2 menu
Too High
Proper
HORZ VERT ES PRESET
MENU: END
SYS
1-7