Fishfinder 340C Owner’s Manual 4IndexLlanguage, changing the 21language selection 32LCD screen 5location for shoot-thru-hull installa-tion 13location for the fishfinder 5log, temperature 30log and graph scale 30Mmain menu 26marking a waypoint 40menu, main 26menu key 22messages 43mounting bracket 7mounting the bracket assembly 6mounting the fishfinder 6mounting the transducer 9mounting the transducer on a transom12mounting the transducer on a trollingmotor 10Nnarrow beam 3, 35narrow data fields 37NMEA 16, 29, 32, 33, 41NMEA address 16NMEA data 38NMEA device 16NMEA input/output 16, 40NMEA setup 32numbers page 26Ooptional accessories 42Ppacking list 1pages, understanding the 23page key 22pause key 22pausing a sonar or flasher page 39pointer 16, 38pointer mode 40pop-up message 43position format 33power/backlight key 20, 21, 22power/data and transducer cables 5, 7power up 20, 21Qquit key 22Rrange 35range keys 22reset odometer 32ROCKER key 22Sscale 27scale, log and graph 30screen, cleaning the iiiscroll 36scroll speed 28selecting a location 5selecting a location for shoot-thru-hullinstallation 13selecting a transom mount location 11setting an alarm 31shallow water alarm 31shoot-thru-hull installation 13software language 21software version 32soft bottom 25soft structure 4sog (speed over ground) 38sonar 2sonar page 23sonar sub tab 31sonar tab 28sound waves 2span 36specifications 42speed units 33split sonar page 24adjustment menu for 24split zoom 24storage iiistrongest sonar returns 4stw (speed through water) 38surface clutter 4surface mounting the fishfinder 6swap split 37swivel base 6swivel mount bracket 7symbols, fish 27system sub tab 31system tab 32Ttarget level 35temperature 27temperature graph 37temperature log 30temperature range for the fishfinder 5temperature tab 30temperature units 33testing the installation 20testing the transom mount installa-tion 21time 34timer 31, 39time (time of day) 39time duration 30time format 34time tab 33time zone 34tools 37