Furuno CH-270 - Manual (Page 100)

5. MENU OPERATION
5-16
5.4.7 Track range settings
You may choose the video plotter display scale range as follows.
1. Choose RANGE-TRACK at the SYS menu and then press ►.
5 : 8000
2 : 1000
3 : 2000
4 : 4000
: SELECT : CHANGE MENU: END
** RANGE-TRACK MODE **
1 : 500 (100-10000m)
DEFAULT SETTING : NO YES
Range-track mode menu
2. Press ▲ or ▼ to choose range number desired.
3. Press ◄ or ► to set.
4. Press the [MENU] key to register settings and close the menu.
To restore default track range settings, choose DEFAULT SETTING, press ► to
choose YES and then press the [MENU] key.