TOOLTOP ET853C 3-in-1 Portable Digital Oscilloscope, Multimeter, and Signal Generator User Manual

1. Introduction

The TOOLTOP ET853C is a versatile 3-in-1 handheld instrument combining a digital oscilloscope, a true RMS digital multimeter, and a signal generator. Designed for professionals and enthusiasts, it offers high-speed sampling, dual-channel measurement, and a range of diagnostic capabilities for various electrical and automotive applications.

Figure 1: Overview of the ET853C's 3-in-1 capabilities.

2. Key Features

• Dual-channel Oscilloscope: 70MHz analog bandwidth (single channel), 40MHz (dual channel) with 200Msps high-speed sampling rate.
• 20,000-count True RMS Multimeter: Measures AC/DC current, AC/DC voltage, resistance, capacitance, diode, buzzer, duty cycle, and frequency.
• Signal Generator: Supports square wave, sine wave, and triangle wave signal outputs with adjustable amplitude.
• 12 Waveform Parameter Measurements: Includes Vpp, Vp, Vmax, Vmin, Vavg, Vrms, Freq, Period, +Width, -Width, +Duty, -Duty.
• Built-in Rechargeable Battery: 18650 lithium battery (2000mAh) for approximately 4 hours of continuous use, with a detachable design for easy replacement.
• Data Storage: Can store 1000 sets of multimeter data and 200 sets of waveform signals.
• Intelligent Anti-Burn Protection: Overload protection with dual fuses (200mA/10A) for enhanced instrument safety.
• Color Screen: 320x240 TFT color screen with adjustable backlight brightness.

Figure 2: Visual representation of the ET853C's core advantages.

3. Package Contents

Please check the package carefully upon receipt to ensure all items are present and undamaged:

• 1 x TOOLTOP ET853C Oscilloscope Multimeter
• 2 x Oscilloscope Probes
• 1 x Pair of Multimeter Test Leads
• 1 x USB Type-C Charging Cable
• 1 x English User Manual
• 1 x Carrying Pouch

Figure 3: Standard accessories included in the package.

4. Setup Guide

1. Unboxing: Carefully remove all components from the packaging.
2. Battery Installation/Charging: The device comes with a built-in rechargeable 18650 lithium battery. Before first use, fully charge the device using the provided USB Type-C cable and a compatible 5V power adapter. The battery is detachable for future replacement.
3. Power On: Press and hold the power button to turn on the device.
4. Probe Connection:
   • For oscilloscope functions, connect the oscilloscope probes to the CH1 and CH2 input ports as needed.
   • For multimeter functions, connect the test leads to the appropriate input terminals (VΩCx, mA, 10A, COM) based on the measurement type. Refer to the "Input Shift Prompt" diagram below for correct connections.

Figure 4: Input terminal connection guide for different measurements.

5. Operating Instructions

5.1 General Operation

• Use the rotary dial to select the desired function (Oscilloscope, Multimeter, Signal Generator, or specific measurement ranges).
• The F1-F4 buttons are context-sensitive function keys, their labels will change on the screen depending on the selected mode.
• The AUTO button provides automatic setup for oscilloscope waveforms or auto-ranging for multimeter functions.
• The MENU button accesses settings and options.
• The SAVE button stores measurement data or waveforms.

5.2 Oscilloscope Mode

To enter oscilloscope mode, turn the rotary dial to the oscilloscope setting. Connect the probes to the CH1 and/or CH2 inputs.

Figure 5: Oscilloscope input channels.

• Automatic Waveform Adjustment: Press the AUTO button for one-key waveform auto-adaptation. This will automatically adjust the time base and vertical amplitude for a stable display.
• Manual Adjustment: Use the F-buttons to manually adjust parameters like amplitude (vertical sensitivity) and time base (horizontal scale).
• Multiple Waveform Measurement: The ET853C can display and measure multiple waveforms simultaneously using its dual channels.
• Waveform Parameter Measurement: The device supports 12 types of waveform parameter measurements including Vpp, Vp, Vmax, Vmin, Vavg, Vrms, Freq, Period, +Width, -Width, +Duty, and -Duty. These values are displayed on the screen.

Figure 6: Waveform parameter measurement display.

Figure 7: Auto-ranging feature for oscilloscope.

5.3 Multimeter Mode

Turn the rotary dial to the desired multimeter function (e.g., VDC, VAC, ADC, AAC, Ω, F, Hz, Diode, Continuity). Connect the test leads to the appropriate terminals.

Figure 8: Multimeter measurement functions.

• AC/DC Voltage Measurement: Select VDC or VAC. Connect test leads in parallel with the circuit.
• Resistance Measurement: Select Ω. Connect test leads across the component.
• Diode Test: Select the diode symbol. Connect test leads across the diode to check forward voltage drop.
• Continuity Test: Select the continuity symbol. Touch test leads to points to check for continuity (a beep indicates continuity).
• Capacitance Measurement: Select F. Connect test leads across the capacitor.
• Frequency and Duty Cycle Measurement: Select Hz or Duty Cycle. Connect test leads to the signal source.
• MAX/MIN and REL Functions: Use the F-buttons to activate MAX/MIN (to record maximum and minimum values) or REL (relative measurement) functions.

5.4 Signal Generator Mode

Turn the rotary dial to the signal generator setting. Connect a probe to the AWG output port.

Figure 9: Signal generator output waveforms.

• Waveform Selection: Use the F-buttons to select between Square, Sine, and Triangle wave outputs.
• Frequency Adjustment: Adjust the output frequency (e.g., 10Hz to 3MHz for square wave, 10Hz to 100kHz for sine/triangle).
• Amplitude Adjustment: Adjust the output amplitude (e.g., 3Vpp, 2Vpp, 1Vpp, etc.).

5.5 Data Storage and Viewing

The ET853C can store up to 1000 sets of multimeter data and 200 sets of waveform signals.

• Saving Data: Press the SAVE button to store the current measurement or waveform.
• Viewing Stored Data: Navigate through the menu to access the "Multimeter database" or "Waveform preview images" to review saved data.

Figure 10: Interface for waveform and data storage.

5.6 Product Demonstration Video

Video 1: A demonstration of the TOOLTOP ET853C's key features and operational steps, including waveform adjustment, dual-channel measurement, signal generation, and multimeter functions.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, especially if it will be stored for an extended period. The 18650 battery is detachable for replacement when its capacity degrades.
• Fuse Replacement: The ET853C features intelligent anti-burn protection with dual fuses (200mA/250V and 10A/125V). If the device stops functioning correctly after an overload, the fuses may need replacement. Refer to the full user manual for detailed instructions on accessing and replacing the fuses.

Figure 11: Smart anti-burning protection with dual fuses.

7. Troubleshooting

If you encounter issues with your ET853C, please refer to the following common troubleshooting steps:

• Device does not power on: Ensure the battery is charged. Connect the USB-C charger and try again.
• No display or dim display: Check the backlight brightness settings in the menu. Ensure the device is powered on.
• Inaccurate Multimeter Readings:
  • Verify that the test leads are correctly connected to the appropriate input terminals for the selected measurement function.
  • Ensure the rotary dial is set to the correct measurement range.
  • Check if the fuses are intact (see Maintenance section).
• Unstable Oscilloscope Waveform:
  • Press the AUTO button to allow the device to automatically adjust the waveform.
  • Check probe connections and ensure they are securely attached.
  • Adjust the time base and vertical sensitivity manually.
  • Verify the trigger settings (e.g., trigger level, edge selection).
• Signal Generator Output Issues: Ensure the AWG output is connected correctly and the desired waveform, frequency, and amplitude are selected.

For persistent issues, consult the comprehensive user manual provided in the package or contact customer support.

8. Technical Specifications

General Characteristics

Oscilloscope Specifications

Signal Generator Specifications

Multimeter Specifications

9. User Tips

• Always ensure the correct function is selected on the rotary dial before connecting probes or test leads to avoid damage to the device or circuit.
• For precise oscilloscope measurements, consider using the manual adjustment features for time base and amplitude after an initial AUTO setup.
• Utilize the data storage feature to record important measurements for later analysis or comparison.
• Keep the device and accessories clean and stored in the provided carrying pouch to protect them from dust and physical damage.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the contact details provided in the full user manual included with your product or contact the seller directly. Keep your purchase receipt as proof of purchase.