background image

                                                                  

Press 

  to return to previous menu. Use 

  or 

  and select 3. BOTTOM 

SET and press 

1.3 BOTTOM SET 

Screen picture 

Description 

 

Freq:

 

The user defined frequency of the transmitted pulse 

to the echo sounder.

 

Width:

 The user defined width of the transmitted pulse to 

the echo sounder.

 

Period:

 The user defined selected depth. 

Rply: 

The  user  defined  value  of  the  signal  level  on  the 

transmitted pulse to the echo sounder. 

This mode allows the user to set all the return pulse parameters and simulate 

extreme  conditions.  Press 

 

 

  or 

  to  change  the  place  of  the 

flashing  cursor,  and  press 

  or 

  to  change  the  value  of  the  number 

where  the  cursor  flashed.  If  the  settings  are  finished,  press 

  to  send  the 

bottom echo that you set.   

Press 

  to return to previous menu. Use 

  or 

  and select 4. DEMO and 

press 

.   

1.4 DEMO 

DEMO  mode  will  slowly  vary  the  depth  around  the  depth  and  bottom 

parameters  set  in  the  BOTTOM  SET  screen.  If  fish  are  required,  the 

parameters on this screen can be used to select how strong and how often 

fish returns show. These will also vary between the set depth and the bottom. 

Screen picture 

Description 

 

Ratio: 

How often fish show.

 

Width: 

The width of the fish echo.

 

Depth: 

The minimum depth of the fish echo.

 

BOTTOM SET 

Freq:      49.8 kHz 
Width:    322 us 
Depth:    20 m 
Rply:   

1050 V 

 
 
 

DEMO 

Ratio:      03:00 
Width:    322 us 
Depth:    10 m 
   

 
 
 

Summary of Contents for SIM990

Page 1: ...Doc No NLT SIM990 SSEN Version V180126 NINGLU SIM990 Echo Sounder Transducer Tester Operation Manual...

Page 2: ...Button description 2 Specification 3 Summary 3 Echo sounder tester 3 Transducer tester 4 Operation 5 Warning 5 Auto self test 5 Main menu 5 1 Echo simulator 7 1 1 INPUT MEASURE 8 1 2 AUTO TRACK 8 1 3...

Page 3: ...is a tester that measures the characteristics of the transducer showing the resonance and electrical characteristics of the transducer The tester works for most transducer directly to transducer not t...

Page 4: ...sh signal Power on off Turn on off the system Operation Area To move the cursor position To set values To echo transmit pause and test start pause To return to previous menu To enter the selected menu...

Page 5: ...ater than 9 ms Parameter Alias Range Resolution Accuracy Input frequency Ifreq 10 kHz 999 9 kHz 0 1 kHz 0 1 kHz Input width Iwidth 20 us 60 000 us 1 us 1 us Input period Iperiod 1 ms 6 553 5 ms 0 1 ms...

Page 6: ...nant frequency Fr 10 kHz 999 9 kHz 0 01 kHz 0 1 kHz Resonant impedance of the transducer Zr 1 ohm 65 535 ohm 1 ohm 1 ohm Resonant phase of the transducer Qr 0 3 14 0 01 0 01 Transducer impedance at th...

Page 7: ...r simulator In echo sounder simulator mode the signal will become noisy if the voltage gets lower It is therefore recommended to use the power supply in this mode If the battery level gets less than 5...

Page 8: ...OTTOM SET 1 4 DEMO 2 1 Tran tester SIM990 Menu Structure 1 Echo simulator 2 Tran tester 1 Freq 2 Width 3 Period 4 Ampl 1 Freq 2 Width 3 Ampl 4 Depth 5 Rply 1 Freq 2 Width 3 Depth 4 Rply 1 Ratio 2 Widt...

Page 9: ...mage can be caused by using the other wire Use or and select 1 ECHO SIMULATOR and press The following screen picture will appear Screen picture Description 1 INPUT MEASURE is used for showing the tran...

Page 10: ...the transmitted pulse to the echo sounder Width The measured width of the transmitted pulse to the echo sounder Ampl The signal level on the received pulse from the echo sounder Depth User defined sim...

Page 11: ...ing cursor and press or to change the value of the number where the cursor flashed If the settings are finished press to send the bottom echo that you set Press to return to previous menu Use or and s...

Page 12: ...should be submerged into water when testing Both resonance frequency and impedance may change in air The tester is designed to sweep through a series of frequencies and measure the characteristics of...

Page 13: ...is shown on the screen Press to continue the sweep When the sweep is finished the RESONANCE menu will appear Screen picture Description Freq The resonant frequency of the tested transducer Zmag The im...

Reviews: