background image

 

9  

F

ISHING WITH THE 

2100 

How Your 2100 Works 

The 2100 uses active SONAR, short for Sound Navigation and Ranging, to 
locate and identify objects in the water.  The transducer sends out short 

bursts of ultrasonic sound waves into the water and then listens for echoes 
to come back from objects and the bottom.  The further away the object or 

bottom is, the longer it takes the echo to return.  
These ultrasonic waves “illuminate” the water, forming a beam that is 

strongest in the direction that the transducer is pointed (see Figure 3). 
Weaker side-lobes split off from the main beam and with enough gain can 

be used for finding fish as well.  You can calculate the approximate 
diameter of the main beam on the bottom as the depth divided by six. 

Figure 3.  

SONAR beam (cross-section) 

Reading the Graph 

The bottom graph is created by drawing all of the echoes from a single 
burst in a vertical column on the display, with the echoes from deepest 

objects drawn lowest on the display. After all the echoes from the burst are 
drawn, the graph is shifted to the left and the process is repeated (see 

Figure 2). 

Summary of Contents for Tournament 2100

Page 1: ..._______________________________9 Maintenance ________________________________________10 Specifications________________________________________11 If You Are Having Problems____________________________1...

Page 2: ...r interference before mounting next to radio equipment If the mounting surface is made from thin fiberglass a piece of wood underneath it will help secure the bracket The bracket is designed to hide a...

Page 3: ...lose to the transom at the back of the boat see Figure 1 It should be as close to the center as possible excluding the turbulent area in front of the propeller If your hull has several steps only the...

Page 4: ...t the boat see Figure 1 STEP 5 Mount the transducer Using the two screws provided mount the transducer into place Tighten until the transducer is snug against the hull Do not over tighten STEP 6 Clean...

Page 5: ...recommendation do not ignore temperature guidelines and apply a generous amount to the fiberglass Immediately press the transducer into the epoxy and work back and forth until it is close to the fiber...

Page 6: ...hing back to factory settings Power on and off demo mode POWER ON press and release the POWER MENU button DEMO MODE While powering on the 2100 keep the POWER MENU button pressed until the words REAL a...

Page 7: ...utter control and increases the gain significantly to help display smaller objects Although this improves the picture in most ice fishing situations it may increase clutter and is normally turned off...

Page 8: ...d set the depth and press and release the or button to turn the depth alarm on and off METRIC The 2100 can display in either U S or metric units RESET This feature resets most menu settings back to th...

Page 9: ...am that is strongest in the direction that the transducer is pointed see Figure 3 Weaker side lobes split off from the main beam and with enough gain can be used for finding fish as well You can calcu...

Page 10: ...may also produce arches A better way of determining fish is to watch for subtle patterns on the graph Solid horizontal lines across the screen are often fish hovering under the transducer These lines...

Page 11: ...low 14 F 10 C or exposure to the sun or other heat sources causes the case to reach 140 F 60 C Permanent damage will occur to the liquid crystal display if stored or used where the temperature is belo...

Page 12: ...ing for fish in shallow water remember that the bottom transducer beam covers a small area see page 9 The gain may be too low Try turning the gain up see page 8 Problem No speed reading with optional...

Page 13: ...handled in a manner other than according to the instructions furnished with the product When any serial number has been effaced altered or removed When any defect problem loss or damage has resulted...

Page 14: ...tage shipping charges insurance costs and other expenses deliver mail or ship product together with proof of purchase to the Company or if outside the United states to an Authorized Service Center Ple...

Reviews: