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Summary of Contents for Ninglu SIM990
- Page 1 NINGLU SIM990 Echo Sounder & Transducer Tester Operation Manual Doc No： NLT-SIM990-SSEN Version： V180126...
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Page 2: Table Of Contents
Content Introduction .............. 1 Features ................1 Packing list ................ 1 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 .............. -
Page 3: Introduction
SIM990 is a handheld portable tester for echo sounder and transducer. Echo sounder tester The SIM990 can measure the output of an echo sounder, and if required, reply with a user defined signal to simulate operation of the transducer. Transducer tester The SIM990 is a tester that measures the characteristics of the transducer, showing the resonance and electrical characteristics of the transducer. -
Page 4: Button Description
To return to previous menu To enter the selected menu. External connector： Five-core socket for connecting echo sounder or transducer When transducer test of SIM990 is on, the transducer cannot be connected with the main unit and the cable for transducer tester... -
Page 5: Specification
Specification Summary Display screen： 128×64 dot-matrix LCD Dimension： 235mm×135mm×55mm Weight： 750g (1.2 kg with bag and cables) Power supply internal: Rechargeable li-ion battery (12.6 V DC) Power supply external: 12.6 V/350 mA operation and battery charging Built-in battery: 12.6VDC 1500mAh Battery charger：... -
Page 6: Transducer Tester
Transducer tester Parameter Alias Range Resolution Accuracy Scan frequency 10 kHz - 999.9 kHz 0.01 kHz ± 0.1 kHz Resonant frequency 10 kHz - 999.9 kHz 0.01 kHz ± 0.1 kHz Resonant impedance of the transducer 1 ohm - 65 535 ohm 1 ohm ±... -
Page 7: Operation
After the auto self-test procedure, the SIM990 MAIN MENU appears. Battery status indication The SIM990 also shows the battery status. The battery should last about 4 hours for transducer tester and shorter for 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. -
Page 8: Echo Simulator
SIM990 Menu Structure 1 Echo 2 Tran simulator tester 1.1. INPUT MEASURE 2.1. Tran tester 1.2. AUTO TRACK 1.3. BOTTOM SET 1.4. DEMO 1. Freq 1. Sfreq 2. Width 2. Efreq 3. Period 3. Step 4. Ampl 1. Freq 2. Width 3. -
Page 9: Bottom Set
1 Echo simulator Connect SIM990 to the echo sounder’s transducer input/output interface. The echo simulator is used to verify that the transceiver electronics is working satisfactory. This should be used if the system seems to have shorter range than normal, if there is too much noise on the screen, or if the system looses the bottom. - Page 10 1.1 INPUT MEASURE and select 1. ECHO SIMULATOR and press The following screen picture will appear: Screen picture Description Freq: The frequency of connected echo sounder output. INPUT MEASURE Freq: 49.8 kHz Width: The width of received pulse from echo sounder. Width: 322 us Period: The time between the received pulses.
- Page 11 Press to return to previous menu. Use 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. BOTTOM SET Width: The user defined width of the transmitted pulse to Freq: 49.8 kHz Width:...
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Page 12: Trans(Ducer) Tester
2 TRANS(DUCER) TESTER If you suspect the transducer has a problem, firstly disconnect it from the echo sounder. Connect the transducer to the SIM990 with transducer tester cable. Then run a sweep across the expected resonance frequency. Look at the resonant frequency, the impedance and check it against the manufacturers’... - Page 13 Screen picture Description Sfreq: The start frequency of the test sweep. MANUAL TEST Efreq: The end frequency of the test sweep. Sfreq: 040.0 kHz Efreq: 060.0 kHz Step: The frequency step interval. Step: 000.1 kHz Press to change the place of the flashing cursor, and press to change the value of the number where the cursor flashed.
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