Furuno NAVNET 1823C - Manual (Page 208)

5. CUSTOMIZING YOUR UNIT
5-34
5. Select function desired with the trackball, then press the ENTER soft key or
[ENTER] knob to register your selection.
6. Press the [MENU] key to close the menu.
Sounder function keys
Menu Item Function
Function Key
Label
OFF Assigns no function.
MOD: AUTO MODE Display automatic mode selection window. MOD
GHF: GAIN – HF Displays high frequency gain adjustment window. GHF
GLF: GAIN – LF Displays low frequency gain adjustment window. GLF
SFT: SHIFT Shifts range in manual operation. SFT
NL: NOISE LIMITER Suppresses noise. NL
CLT: CLUTTER Suppresses clutter. CLT
WMK: WHITE MARKER Sets white marker. WMK
HUE: HUE Sets hue. HUE
SLV: SIGNAL LEVEL Erases weak signals. SLV
PA: PICTURE ADV Sets picture advance speed. PA
TG: TEMP. GRAPH Turns temperature graph on/off. TG
TVH: TVG – HF Sets TVG for high frequency TVH
TVL: TVG – LF Sets TVG for low frequency. TVL
EOH: OFFSET – HF Offsets echo strength for high frequency. EOH
EOL: OFFSET -LF Offsets echo strength for low frequency. EOL
SMT: SMOOTHING Sets echo smoothing rate. SMZ
ZMR: ZOOM RANGE Sets zoom range. ZMR
BLR: B/L RANGE Sets bottom lock range for bottom-lock display. BLR
TLL: TLL OUTPUT
Outputs current position to plotter. Also inscribes
line on sounder and registers position as a
waypoint on plotter.
TLL
SSR: SNDR SOURCE Selects source for sounder data. SSR
DBX: D. BOX ON/OFF Turns data boxes on/off. DBX
CHG: CHANGE CNTRL Switches control in combination display. CHG
Note: To use CHANGE CNTRL set it on all displays, with the same soft key number.