Garmin 100 BLUE Thermoclines

On the Water

Understanding the Chart

Thermoclines

A rough deﬁnition of a thermocline is a break in water where the water temperature changes at a faster rate than the water above it. The thermocline is usually displayed as a gray level, as shown below.

One of the unique features offered by GARMIN is See-Thru technology. A benefit of See-Thru technology is that it allows the Fishfinder 100 Blue to see fish inside thermoclines.

Thermocline

Contents

Page Page Introduction Customer Service Product Registration Limited Warranty * Included with Optional Package Packaging and Accessories Table of Contents Introduction Installation Unit Operation Using the Adjustment Bar: Alarm Tab System Tab Calibrations Tab Units Tab Memory Tab Water Depth Battery Voltage Speed Over Water Water Temperature Fish Installation Transducers Mounting the Transducer DO NOT Transom Mount Installation In-HullInstallation Selecting a Location Testing the Location Testing the Location Mounting the Transducer Speed Sensor Installing the Transducer In-HullInstallation (continued) Installing the Transducer: Installing the Wiring Harness Fishﬁnder 100 Blue Connecting a Transducer to Multiple Sensors Wiring Harness Installation (continued) Display Installation (Surface Mount) Surface Mounting the Display: Installing the Display Display Installation (Flush Mount) Flush Mounting the Display: Testing the Installation Power Testing the Installation Arrow Keys Enter Key Setup Key Power Key Describing The Display Using the Adjustment Bar Zoom To change the Zoom Scale: View To change the View: To have the unit automatically set a View: Gain To change the Gain: Minimum Gain Normal Gain SETUP MENU Chart Tab Fish Symbols Frequency (continued) To select a Frequency: Fish Symbols To select a Fish Symbol: ENTER NOTE: To change the Whiteline Setting: Scroll Speed To adjust the Scroll Speed: Fish Symbols in Dual Frequency Mode Scale To change the Scale Setting: Scale — ‘Overlay’ Scale — ‘Corners’ Scale — ‘Basic’ Tools Tab Numbers Tab Battery Volts To show or hide the Battery Volts display ﬁeld: Temperature To set the Temperature display ﬁeld: Setup Menu: Numbers Tab Battery Volts Selections Speed Display Selections Depth Number Selections To set the Speed display ﬁeld: Depth Number Alarm Tab Setup Menu: Alarms Tab Shallow Water Alarm Deep Water Alarm Shallow Water To activate/deactivate the Shallow Water Alarm: System Tab Setup Menu: System Tab Beeper Selections NMEA Output Selections Beeper To change the Beeper Setting: Calibrations Tab Units Tab Memory Tab Understanding Sonar Transducer Coverage 50kHz200kHz Transducer Coverage Understanding the Chart Whiteline Turned Off Thermoclines Simulator Mode To select a speciﬁc Transducer: Simulator Mode Simulator Message and Icon Simulator Transducer Selections OnAppendixthe WaterA Speciﬁcations Physical Power Performance OnAppendixthe WaterB Messages and Alarms Index