1. Product Overview
The Micsig Automotive Tablet Oscilloscope ATO Series is a portable digital oscilloscope designed for automotive diagnostic testing. It features 4 channels, a 300 MHz analog bandwidth, 2 GSa/s sampling rate, and 220mpts memory depth. Its large 10.1-inch TFT-LCD display with 1280 x 800 resolution offers full touch operation for efficient use. This device supports various automotive diagnostic tests including ignition, sensor, actuators, networks, combination tests, and pressure tests. Connectivity options include Wi-Fi, USB 3.0/2.0 Host, USB Type-C, Grounding, HDMI, and Trigger Out interfaces for remote control and external display. A built-in 7500mAh Li-ion battery provides 4 to 5 hours of fieldwork operation.

Figure 1: Micsig Automotive Tablet Oscilloscope ATO Series, front view showing the display.
2. Key Features
- 4 Channels: Simultaneous capture of up to four signals for comprehensive analysis.
- High Bandwidth & Sampling Rate: 300 MHz analog bandwidth and 2 GSa/s sampling rate for detailed waveform capture.
- Deep Memory Depth: 220mpts memory depth allows for longer data acquisition times.
- Large Touch Display: 10.1-inch TFT-LCD display with 1280 x 800 resolution for clear viewing and intuitive touch control.
- Automotive Diagnostic Presets: Dedicated functions for ignition, sensor, actuators, networks, combination tests, and pressure tests.
- Multiple Interfaces: Equipped with Wi-Fi, USB 3.0/2.0 Host, USB Type-C, Grounding, HDMI, and Trigger Out for versatile connectivity.
- Portable Power: Built-in 7500mAh Li-ion battery provides extended operation for fieldwork.

Figure 2: Visual representation of key specifications: 4 channels, 300MHz bandwidth, 2 GSa/s sampling rate, and 220mpts memory depth.
3. Package Contents
The standard kit (SATO1004) typically includes the following items. Contents may vary based on specific model (ATO1004, ATO2004, ATO3004) and regional packaging.
- 1 x Micsig Automotive Tablet Oscilloscope (built-in battery)
- 1 x Power Cord
- 2 pair x Alligator Clips (red and black)
- 2 pair x Soft Pin Probes (red and black)
- 4 x BNC to Banana Leads
- 2 x Passive Probes
- 1 x Adapter
- User Manual (this document)

Figure 3: Overview of the standard accessories included with the oscilloscope, such as cables, clips, and probes.
4. Setup
4.1 Initial Charging
Before first use, ensure the oscilloscope's built-in Li-ion battery is fully charged. Connect the provided power adapter to the DC 12V input port on the device and plug it into a power outlet. The charging indicator will illuminate. A full charge typically takes several hours.
4.2 Powering On/Off
To power on the device, press and hold the power button located on the side panel until the Micsig logo appears on the screen. To power off, press and hold the power button again until a shutdown prompt appears, then confirm. For extended storage, ensure the power-off lock switch is engaged to prevent accidental power-on and battery drain.

Figure 4: Detailed view of the oscilloscope's rear and front panels, highlighting the power button, USB ports, HDMI, and BNC inputs.
4.3 Connecting Probes
Connect the BNC end of the probes to the corresponding channel inputs (CH1, CH2, CH3, CH4) on the oscilloscope. Ensure a secure connection. For automotive testing, use the appropriate specialized probes (e.g., ignition probes, current clamps, pressure transducers) as required for the specific measurement.
5. Operating Instructions
The Micsig ATO Series features a full touch interface for intuitive operation. Navigate through menus and adjust settings directly on the screen.
5.1 Basic Waveform Capture
- Power on the oscilloscope.
- Connect the desired probe to the appropriate channel input (e.g., CH1).
- Connect the probe to the signal source you wish to measure.
- On the touchscreen, select the desired channel and adjust its vertical scale (Volts/div) and horizontal time base (Time/div) as needed.
- Use the "Auto" button for automatic setup of vertical and horizontal scales, or manually adjust for precise control.
- Adjust the trigger settings (level, type) to stabilize the waveform.

Figure 5: A hand interacting with the oscilloscope's touchscreen, demonstrating its full touch operation for waveform analysis.
5.2 Automotive Diagnostic Presets
The ATO Series includes a comprehensive set of automotive diagnostic presets to simplify common tests. These presets automatically configure the oscilloscope settings for specific measurements.
- Charging/Start Circuits: Test 12V charging, 24V charging, alternator AC ripple, Ford smart alternator, 12V start, 24V start, and cranking current.
- Sensors: Analyze signals from ABS, accelerator pedal, air flow meter, camshaft, coolant temperature, crankshaft, distributor, fuel pressure, knock, lambda, MAP, road speed, and throttle position sensors.
- Actuators: Measure signals from carbon canister solenoid valve, diesel glow plugs, EGR solenoid valve, fuel pump, idle speed control valve (IAC), injector (petrol/diesel), pressure regulator, and quantity control.
- Ignition: Perform primary, secondary, and combined primary+secondary ignition tests (voltage and current).
- Networks: Decode and analyze CAN H&CAN L, LIN, FlexRay, and K-Line bus signals.
- Combination Test: Pre-configured tests combining multiple signals, such as Crankshaft+Camshaft or Primary Ignition+Injector Voltage.
- Pressure Test: Measure intake manifold pressure (cranking/running), exhaust tailpipe pressure, in-cylinder pressure, and in-crankcase pressure.
Video 1: Official Micsig video demonstrating the automotive diagnostic capabilities and user interface of the ATO Series oscilloscope, including various test presets and signal analysis.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. For stubborn dirt, a slightly damp cloth with mild detergent can be used. Avoid abrasive cleaners or solvents.
- Storage: Store the oscilloscope in a cool, dry place away from direct sunlight and extreme temperatures. When not in use for extended periods, ensure the battery is charged to approximately 50% and engage the power-off lock.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Recharge the battery regularly, even if the device is not in active use.
- Probe Care: Inspect probes and cables regularly for damage. Replace any damaged components to ensure accurate measurements and user safety.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery; Power-off lock engaged; Faulty power adapter. | Charge the battery; Disengage the power-off lock switch; Try a different power adapter. |
| No waveform displayed. | Probe not connected properly; Incorrect channel settings (Volts/div, Time/div); Trigger not set correctly; No signal input. | Check probe connections; Adjust vertical and horizontal scales; Adjust trigger level/type or use Auto trigger; Verify signal source. |
| Unstable waveform. | Incorrect trigger settings; Noisy signal. | Adjust trigger level, slope, or mode; Use averaging or filtering functions if available. |
| Touchscreen unresponsive. | Software glitch; Screen protector interference; Extreme temperature. | Restart the device; Ensure screen protector is properly applied; Operate within specified temperature range. |
8. Specifications
| Feature | Specification (ATO3004) |
|---|---|
| Analog Channels | 4 |
| Bandwidth | 300MHz |
| Sampling Rate (Max.) | 2GSa/s |
| Memory Depth (Max.) | 220Mpts |
| Waveform Capture Rate (Max.) | 300,000 wfms/s |
| Display | 10.1" TFT-LCD (1280x800), 11x10 divisions |
| Support Diagnostic Tests | Charging Circuits, Starter Circuits, Sensors, Actuators, Ignition, Networks (CAN, CAN FD, LIN, FlexRay, K line), Combination Tests |
| Bandwidth Filter | 20MHz, Low Pass (to 30Hz) |
| I/O Ports | Wi-Fi, USB 3.0/2.0 Host, USB Type-C, Grounding, HDMI, Trigger out |
| Battery / Duration | 7.4V, 7500mAh / 2H |
| Dimension / Net Weight | 265*192*50mm / 1.9kg (with battery) |
Note: Specifications are for the ATO3004 model. Other models (ATO1004, ATO2004) may have different specifications as detailed in the product comparison table.

Figure 6: A comparison table detailing specifications across different models of the Micsig Automotive Tablet Oscilloscope series.
9. Warranty and Support
Micsig products are typically covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your product or visit the official Micsig website for detailed warranty terms and conditions.
For technical support, troubleshooting assistance, or service inquiries, please contact Micsig customer support through their official channels. Contact information can usually be found on the product packaging, the official website, or the warranty documentation.
For additional resources and updates, visit the Micsig Store on Amazon.