Ninglu SIM990 User manual

Doc No：NLT-SIM990-SSEN
Version：V180126
NINGLU SIM990
Echo Sounder &
Transducer Tester
Operation Manual

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 ................................................................. 7
1.1 INPUT MEASURE..................................................... 8
1.2 AUTO TRACK.......................................................... 8
1.3 BOTTOM SET.......................................................... 9
1.4 DEMO ................................................................... 9
2 TRANS(DUCER) TESTER................................................. 10

1
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. The
tester works for most transducer (directly to transducer, not through circuitry).
Features
Transducer tester
Echo sounder tester
Built-in rechargeable battery
Packing list
Description
Qty
Comment
Echo sounder & Transducer tester
1
Cable for echo sounder tester
1
Cable for transducer tester
1
Adapter power
1
Operation manual
1
Travel case
1

2
Button description
Indication LEDs:
Yellow flashing：There are input pulses, which is to have been connected with
echo sounder/ fish finder with power on.
Red flashing: There are output single, which is to send to bottom/fish 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.
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
must be used.

3
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：12.6V/350mA
Working temperature：-15~55℃
Echo sounder tester
Note: Specified for input width greater 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
±0.1 ms
Input amplitude
Vipp
50 V - 2 500 V
10V
±20%
Output frequency
Ofreq
10 kHz - 999.9 kHz
0.01 kHz
±0.1 kHz
Output bottom width
Obwidth
20 us - 60 000 us
1 us
±1 us
Output bottom depth
Obdepth
0.3 m - 999.9 m
0.3 m
±0.1 m
Output fish width
Ofwidth
20 us - 60 000 us
1 us
±1 us
Output fish depth
Ofdepth
1 m - 999.9 m
1 m
±0.1 m
Output amplitude
Vopp
1 mV - 590 mV
1 mV
±1 mV
Output fish ratio
Ofr
00:00 - 99:99
1
0

4
Transducer tester
Parameter
Alias
Range
Resolution
Accuracy
Scan frequency
Fs
10 kHz - 999.9 kHz
0.01 kHz
±0.1 kHz
Resonant 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 the specified frequency
Zt
1 ohm - 65 535 ohm
1 ohm
±1 ohm
Transducer phase at the specified frequency
Qt
0~3.14
0.01
±0.01

5
Operation
Warning
Disconnect transducer
from echo sounder before testing！
Auto self-test
On startup, the screen will show the system firmware version.
Main menu
After the auto self-test procedure, the SIM990 MAIN MENU appears.
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. If the battery
level gets less than 50 %, a low-battery warning will show.
To prolong the battery life, please charge timely when battery gets low.
On the tester, press or to change the location of the flashing cursor,
and press to enter the function accordingly.
NINGLU TECH
VX.XX
Firmware version
Self-test Rslt
Self-test Pass!
Rfreq:XXX.X kHz
Rres:XXXXX ohm
Battery status indication

6
1.1. INPUT MEASURE
1.2. AUTO TRACK
1.3. BOTTOM 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. Width
3. Depth
1
2
3
4
1. Sfreq
2. Efreq
3. Step

7
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.
Important, warning:
Use the cable for echo sounder tester, the one without cable clips. The
wires are different and damage 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
transmitter signal values from the echo sounder.
2. AUTO TRACK is used to measure in the
incoming pulse and return the same pulse width
and frequency with a user determined amplitude
and depth.
3. BOTTOM SET is used to set all the returned
parameters including frequency and bottom width.
4. DEMO is used to show a moving bottom, with
fish if required.
1. INPUT MEASURE
2. AUTO TRACK
3. BOTTOM SET
4. DEMO
Echo sounder’s transducer
input/output interface
interface

8
1.1 INPUT MEASURE
Use or and select 1. ECHO SIMULATOR and press .
The following screen picture will appear:
Screen picture
Description
Freq: The frequency of connected echo sounder output.
Width: The width of received pulse from echo sounder.
Period: The time between the received pulses.
Ampl: The signal level (Vpp) on the received pulse from
the echo sounder.
Note: In this mode the simulator will not return a signal. The echo sounder
may search for the bottom and adjust its pulse characteristics. If this happens,
use AUTO TRACK mode instead.
Press to return to previous menu. Use or and select 2. AUTO
TRACK and press .
1.2 AUTO TRACK
Screen picture
Description
Freq: The measured frequency of 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 simulated depth.
Rply: The user defined value of the signal level on
the transmitted pulse to the echo sounder.
This mode both receives the pulse, and then sends back the identical pulse in
frequency and pulse width. It also allows the user to set the return pulse
amplitude and depth. This mode allows the user to inspect normal operation
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.
INPUT MEASURE
Freq: 49.8 kHz
Width: 322 us
Period: 350 ms
Ampl: 1050 V
AUTO TRACK
Freq: 50.0 kHz
Width: 322 us
Ampl: 1000 V
Depth: 30 m
Rply 1.00 mV