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 NINGLU Simulator SIM992 

                                                         

1

INTRODUCTION 

System Summary

 

SIM992 is a precision instrument designed for generating the reply echo 
pulse for all types of depth sounders and fish finders. There are two modes: 
Bottom Mode (BT) and Fish Mode (FI). BT is default mode.   

Theory of Operation 

SIM992 receives pulse parameters from depth sounder / fish finder and 
generates echo pulse to simulate the bottom or fish information and then 
sends the information back to depth sounder or fish finder.   

Figure 1.1 Operation Screen 

 
 
 
 
 
 
 
 
 
 
 
 
 

Figure 1.2 Rear Panel 

 
 
 
 
 
 
 
 
 

Data Input/Output 

Power Supply 

DC24V 

Supply Power to 

Sounder/Fish Finder

 

Input

 

Freq

 

Input

 

Width

 

Input Period 

Input Amplitude

 

Echo

 

Freq

 

Echo Width 

Echo

 

Depth

Bottom

 

Mode

 

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