www.obdchina.com

1

SKS-3055B User Manual

Ⅰ. Introduction SKS-3055B Auto signal generator designed under the rules by the diagnosis of auto electronic control systems and electronic circuit signal characteristics, specifically designed for the auto service technician. This instrument easy to use, supplied with cables for variety sensors. Also have the network support for auto sensors database. Used for Automotive fault diagnosis, ECU repair, EECU teaching fields, etc.

Ⅱ. Description of the Panel

（Fig.1） PanelⅠ （Fig.2）PanelⅡ

Ⅲ. Instrument Features 1、Signal Characteristics Adjustment: Adjust the amplitude, frequency, phase, X + Y,

waveform and other indicators, while the signal output. This is very convenience for auto ECU repair.

2、Multi-output signal: Made by high-performance microprocessors, can output 7 signals simultaneously.

3、Human control interface : By the simple design ideas, 128*64 LCD, Bilingual display, easy to operate.

（Fig.3） Start interface （Fig.4） English main menu

4、Cables: Supporting common sensor cables, for various models.

www.obdchina.com

2

（Fig.5） Basic configuration

Ⅳ.Function Introduction This instrument can simultaneous output sinusoidal, square-wave, X+Y signal, voltage signal, oxygen sensor signal, resistance signal and PWM signal, which includes all the common signal characteristics of automotive sensors.

1、Sinusoidal signal:

1---2KHz Frequency regulation; Signal Single-ended output to ground; 5Vpp---18Vpp Amplitude adjustment.

（Fig.6） Sinusoidal interfaceⅠ （Fig.7） Sinusoidal interfaceⅡ

Mainly used for simulate the rotating speed, wheel speed, vehicle speed signals, which was generated by magnetic sensor.

2、 Square-wave Signal:

1---20KHz Frequency regulation; Signal Single-ended output to ground; 5Vpp---9Vpp Amplitude adjustment.

www.obdchina.com

3

（Fig.8） Square-wave interfaceⅠ （Fig.9） Square-wave interface Ⅱ

Used for simulate the rotating speed, wheel speed, camshaft position and air-flow signals, which was generated by Hall sensor and photoelectric sensor. 3、 X+Y Signal

1---2KHz Frequency regulation; 5Vpp---18Vpp Amplitude adjustment; 1---60 X+Y signal adjustment. 1---3 X+Y signal adjustment. 0°、180° Phase position adjustment. X+Y signal outputted by Square-Ground, Sine-Ground and Sine-Couple,

easy to simulate various crank signals. Sine-wave and Square-wave switched while Signal-Ground output.

（Fig.10）X+Y Signal interfaceⅠ （Fig.11）X+Y Signal interface Ⅱ

（Fig.12）X+Y Signal interface Ⅲ （Fig.13）X+Y Signal interface Ⅳ Used for simulate the X+Y signal of Magneto electric, photo electricity and Hall sensors. 4、 Voltage Signal:

0---5V Voltage adjustment. Output voltage precision 0.02V. Signal Single-ended output to

ground

（Fig.14） Voltage signal interface

www.obdchina.com

4

Used for simulate the voltage signal of Throttle Position, MAP and EGR Valve Position Sensors.

5、 Oxygen Sensor Signal:

The 0.1V、0.9V Oxygen ion Dilute and Concentrate can be switched at anytime.

Signal Single-ended output to ground.

（Fig.15）Oxygen Signal interface

Used for simulate oxygen ion concentrate signal by kinds of oxygen sensors.

6、 Resistance Signal

Precision Multi-turn pointer potentiometer. 0--10K Ten loop output, MIN 22Ω

. （Fig.16）Resistance Signal simulate fittings

Used for output signal of coolant temperature, intake air temperature and temperature sensors. It must be realized by simulate resistance signal.

7、 PWM Signal

2 Hz --- 999±1 Hz Frequency can be adjusted independently. 1% --- 99%±1% Duty cycle can be adjusted independently. Signal Single-ended output to ground. 9Vpp amplitude fixed output.

（Fig.17） PWM Signal interfaceⅠ （Fig.18） PWM Signal interfaceⅡ

www.obdchina.com

5

Used for simulate the ignition control signal, fuel injection control signal, camshaft position signal, EGR control signal and some other pulse signals.

Ⅴ.Instructions 1、Power Use outlet power, switch leader cable (ACCES.1) into button Nine-pin jack. Use

the power line (ACCES.2) can easily connected with 12V car battery; Use stabilized voltage supply, work condition: current greater than 2A, Voltage between 10V-15V. Use 220V/12V power adapter, please NOTE: Current ABOVE 1A, Voltage shall NOT above 15V. Power output plug should match with the instrument.

2、 Button and Main Menu

（Fig.19）Main Menu （Fig.20）Buttons

3、Generation of sinusoidal signal After power, choose “Sinusoidal signal”(Fig.19), press “CONFIRM” into Sinusoidal

interface（Fig.6），choose “Frequency” and “Amplitude”. Adjust Frequency: After enter (Fig.6), use “LEFT” and “RIGHT” choose frequency

value; use “UP” and “DOWN” choose magnitude. Press CONFIRM after the adjustment.

Adjust Amplitude: After enter (Fig.7), use “LEFT” and “RIGHT” choose Sinusoidal signal amplitude; use “UP” and “DOWN” choose range.

Signal output: Choose square-wave and Sinusoidal output cables(ACCES.3), the BLUE wire shall generate the Single-ended output to ground Sinusoidal Signal by( Black clamp)

4、 Generation of Square-wave Signal After power, choose “Square-wave Signal” (Fig.19), press “CONFIRM” into

Square-wave Signal interface (Fig.8), choose “Frequency” and “Amplitude”. Adjust Frequency: After enter (Fig.8), use “LEFT” and “RIGHT” choose frequency

value; use “UP” and “DOWN” choose magnitude. Press CONFIRM after the adjustment.

Adjust Amplitude: After enter (Fig.9), use “LEFT” and “RIGHT” choose Square-wave Signal amplitude; use “UP” and “DOWN” choose range.

Signal output: Choose square-wave and Sinusoidal output cables (ACCES.3),

www.obdchina.com

6

the GREEN wire shall generate the Single-ended output to ground square-wave Signal by Black clamp.

5、 Generation of X+Y Signal After power, choose “X+Y Signal” (Fig.19), press “CONFIRM” into X+Y Signal

interface (Fig.10), choose “Frequency” “Amplitude” and “Waveform”. Adjust Frequency: Choose “Frequency” into “X+Y Signal Interface” (Fig.10、11、

12), use “LEFT” and “RIGHT” choose digit; use “UP” and “DOWN” choose range. Press CONFIRM after the adjustment.

Adjust Amplitude: Choose “Amplitude “ into “X+Y signal interface”(Fig.13), use “LEFT” and “RIGHT” choose amplitude; use “UP” and “DOWN” choose range.

Adjust Waveform: Choose “ Waveform” into X+Y signal interface (Fig.10、11、12), cursor moves to “58+2”, use “LEFT” and “RIGHT” choose X and Y, use “UP” and “DOWN” choose signal X(1-60) or Y (1-3); According to the actual vehicle signal characteristics, use LEFT button move the cursor to “Sine-Ground”, use “UP” and “DOWN” choose the output form “Sine-Ground” “Sine-Couple” and “Square-wave”. Move cursor to “POS.” use “UP” and “DOWN” chooses “POS.” and “REV.” Also can use the oscillograph to observe the changes of all the signal signature. This feature is suitable for ECU dynamic test.

Signal Output: Use the X+Y output cables (ACCES.4), choose “Sine-ground”, the GREEN WITH WHITE LINE wire shall generate the Single-ended output to ground Sine X+Y Signal by BROWN clamp; Choose “Square-wave” the GREEN WITH

WHITE LINE wire shall generate the Single-ended output to ground Square X+Y Signal by BROWN clamp; Choose “Sine-Couple” the GREEN WITH WHITE LINE wire and BROWN wire shall generate magnetic X+Y signal: GREEN output （XY+）and BROWN output（XY-）.

6、Generation of Voltage signal

After power, choose (Voltage signal” (Fig.19), press “CONFIRM” into Voltage Signal interface (Fig.21), “Voltage signal” and “Oxygen Sensor Signal” belongs in one module. Boot default “Voltage signal” to 3.57V, “Oxygen Signal” to “Dilute” 0.1V. Use “UP” “DOWN” and “CONFIRM” choose “Voltage signal” and “Oxygen Sensor Signal”.

(Fig.21) Voltage Signal Interface

Simulation of Voltage Signal: Choose “Voltage Signal” press “CONFIRM” into “Voltage Signal interface” (Fig.14). use “LEFT” and “RIGHT” choose fine tuning voltage ; and “UP” and “DOWN” for coarse tuning. Value range 0.1V---5.0V (Fig.14)

Simulation of Oxygen Sensor Signal: Choose “Oxygen Sensor Signal” press “CONFIRM” into “Oxygen Sensor Signal interface” (Fig.15). Use “UP” and “DOWN” adjust oxygen sensor to simulate the output voltage, “Dilute” is about

www.obdchina.com

7

0.1V, “Concentrated” is about 0,9V. Signal Output: Use Voltage signal output cables (ACCES.5), RED wire for voltage

simulate signal output; ORANGE one for oxygen sensor simulates signal output. 7、Generation of PWM Signal After power, choose (PWM signal” (Fig.19), press “CONFIRM” into “PWM signal interface”(Fig.17), Boot default “Duty”50%, “Frequency”100Hz. Use “UP” “DOWN” and “CONFIRM” choose “Duty” and “Frequency”: Adjust Duty Cycle: Choose “Voltage Signal” press “CONFIRM” cursor moves to

duty value, use “LEFT” and “RIGHT” for fine tuning (stepping 1%); Use “UP” and “DOWN” for coarse tuning (stepping 10%), press CONFIRM when it meet the require, adjust the signal duty instantly.

Adjust Frequency: Choose “Frequency” press “CONFIRM” cursor moves to Frequency value, use “LEFT” and “RIGHT” choose unit, tens and hundreds (MAX 999Hz); Use “UP” and “DOWN” for choose value(0-9). ress CONFIRM when it meet the require, adjust the signal frequency instantly.

PWM Signal Output: Use X+Y signal output cables(ACCES.4), the YELLOW one for output. This signal could simulate Camshaft signal. Together with X+Y signal can repair the Dual signal ECU.

8、 Simulation of Resistance Signal

This instrument equipped Precision Multi-turn pointer potentiometer (Fig.16) (ACCES.7), used for simulate the resistance signal. This potentiometer designed with variety of transfer connectors (Fig.22), convenience for diagnosis.

（Fig.22）Potentiometer & Connectors

9、 Signals Combinatorial Output The 7 signals (sinusoidal, square-wave, X+Y signal, voltage signal, oxygen sensor

signal, resistance signal and PWM signal) can be output simultaneously. If need this kind of application, please choose the eight-line components (ACCES.6) and potentiometer connectors (ACCES.7), access to Auto electronic control system as needed. Used for diagnosis difficult fault.

www.obdchina.com

8

Ⅵ、Product Accessories No ITEM PCS DESCRIPTION 1 leader cable （300mm） 1 Nine-pin plug connect with host; 12V Power cord jack;

SM-8A plug( Green with line, Blue, Green, Orange,

Black, Brown, yellow and Red wires)

2 12v power supply lanes 1 Red & Black， Round Plug connected with leader

cable, Red and Black alligator clip connected to

power.

3 Sine-wave, square-wave signal

output connector （200mm） 1 SM-8Y Jack ( Blue, Green and Black wire)

4 X+Y signal output connector

（200mm） 1 SM-8Y Jack（Green with white line, Black, Brown and

Yellow 4 color wires） 5 Voltage signal output connector

（200mm） 1 SM-8Y Jack ( Red, Black and Orange 3 color wires)

6 Multi-output combination

connector（200mm） 1 SM-8Y Jack ( Green with white line, Blue, Green,

Orange, Black, Brown, Yellow and Red 8 color wires) 7 Multi-turn pointer

potentiometer connectors

1 UNIT

Precision Multi-turn pointer potentiometer (1); Other connectors (12 PCS)

8 Extension cable（1.5m） 1 Nine-pin serial cable GB

9 User manual 1

10 Product Certificate 1