TOOLTOP ET852C User Manual

1. Introduction

The TOOLTOP ET852C is a highly versatile and portable 3-in-1 handheld instrument designed for a wide range of electrical and electronic testing applications. It integrates the functionalities of a 50MHz dual-channel digital oscilloscope, a 25000-count true RMS multimeter, and a multi-waveform signal generator into a single compact device. Featuring a clear 3.2-inch color LCD display and intelligent measurement capabilities, the ET852C offers both precision and ease of use for professionals and hobbyists alike. Its robust design includes overload protection and a built-in dual fuse for enhanced safety during operation.

2. Package Contents

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

• 1 x TOOLTOP ET852C Host Device
• 2 x Passive Oscilloscope Probes
• 1 x Test Leads (for Multimeter)
• 1 x Crocodile Clip Line
• 1 x USB Cable (Type-C)
• 1 x Storage Bag
• 1 x English User Manual
• 1 x Attachment (likely probe adjustment tool)

3. Device Overview

Familiarize yourself with the layout and functions of the ET852C's panel and connectors:

1. Display Screen
2. Multi-functional buttons (F1, F2, F3, F4)
3. Automatic setting/range switching (AUTO RANGE button)
4. Stop/Run or Output/Close or Relative Value (Play/Pause button)
5. Power switch
6. Menu/directional keys (Up, Down, Left, Right, MENU)
7. Signal generator output connector (GEN Out)
8. CH1, CH2 interfaces (Oscilloscope input terminals)
9. Probe compensation (3V/1kHz square wave signal output)
10. Charging/USB (USB Type-C interface)
11. Save Settings/Data Preservation (SAVE HOLD button)
12. Switch button (MODE button)
13. Return button (Back arrow button)
14. Input terminal of multimeter (A, mA, COM, VΩHz)

Dimensions: 181mm (Height) x 89mm (Width) x 40mm (Depth)

4. Initial Setup and Charging

4.1 Charging the Device

The ET852C is powered by a built-in 3.7V 2200mAh rechargeable lithium battery. Before first use, or when the battery indicator shows low power, connect the device to a power source using the provided USB Type-C cable (10 in Figure 4). The charging indicator will show the charging status.

4.2 Connecting Probes

• For Oscilloscope: Connect the passive oscilloscope probes to the CH1 and/or CH2 input terminals (8 in Figure 4). Ensure a secure connection.
• For Multimeter: Connect the test leads to the appropriate input terminals (14 in Figure 4) based on the measurement type (e.g., COM and VΩHz for voltage/resistance, A or mA for current).
• For Signal Generator: Connect the crocodile clip line or other appropriate cable to the GEN Out connector (7 in Figure 4) to output waveforms.

5. Operating Modes

The ET852C offers three primary operating modes: Oscilloscope, Multimeter, and Signal Generator. Use the MODE button (12 in Figure 4) to switch between these functions.

5.1 Oscilloscope Mode

In Oscilloscope mode, the device displays real-time waveforms, allowing for detailed analysis of electrical signals.

• Automatic Adjustment: Press the AUTO RANGE button (3 in Figure 4) for one-click automatic adjustment. The oscilloscope will automatically measure the amplitude and frequency of the waveform, and adjust the horizontal and vertical gears to display the waveform in the middle of the screen.
• Trigger Modes: The device supports Automatic, Normal, and Single-time trigger modes. Use the menu/directional keys to select the desired trigger mode and edge (rising or falling).
• Afterglow Mode: This feature allows for better capture of signals by displaying waveform persistence, making it easier to observe abnormal or intermittent waveforms. Options include Minimum, 500ms, 1S, 10S, and Unlimited.

5.2 Multimeter Mode

The multimeter function provides precise measurements of various electrical parameters with a 4.5-digit, 25000-count true RMS display.

• Measurements: Supports DC/AC voltage, DC/AC current, resistance, capacitance, frequency, on-off test, and diode testing.
• Automatic Range: The device features an automatic ranging function for convenience.
• Data Retention: Use the SAVE HOLD button (11 in Figure 4) to retain data on the screen.

5.3 Signal Generator Mode

The built-in signal generator can output multiple waveform types with adjustable frequency and amplitude.

• Waveform Types: Generate Sine wave, Square wave, Triangular wave, Half wave, Full wave, and Sawtooth wave.
• Frequency and Amplitude Adjustment: Use the menu/directional keys and multi-functional buttons (F1-F4) to adjust the frequency and amplitude (VPP) of the output signal.

6. Data Management

The ET852C allows for waveform saving and viewing. You can save waveform screenshots directly on the device. For further analysis or documentation, the instrument can be connected to a computer via its USB Type-C interface (10 in Figure 4) for data export.

7. Specifications

7.1 General Specifications

7.2 Oscilloscope Parameters

Output of Probe Compensator

7.3 Multimeter Parameters

7.4 Signal Generator Parameters

• Sampling rate: 200MSa/s
• DC offset range: 0
• Frequency resolution: 1Hz
• Thoroughfare: 1
• Waveform length: 256Byte
• Vertical Resolution: 8bit
• Output Impedance: 50Ω

8. Safety Information

The TOOLTOP ET852C is designed with user safety in mind, incorporating several protective features:

• Anti-Burn & Overload Protection: The device is equipped with intelligent anti-burning technology and overload protection to prevent damage from incorrect connections or excessive inputs.
• Built-in Dual Fuse: For enhanced safety, the ET852C includes a built-in dual fuse system. The fuses are rated as follows:
• Ceramics: 10A/250V
• Glass: 600mA/250V

Always ensure proper connection and operation within specified limits to prevent injury or damage to the device.

9. Maintenance

• Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
• Storage: Store the device in a cool, dry place, away from direct sunlight and extreme temperatures.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
• Probe Care: Handle probes carefully. Avoid bending or stressing the cables excessively. Store them properly to prevent damage.

10. User Tips

• Auto-Range for Quick Setup: When starting a new measurement, especially with unknown signals, utilize the 'AUTO RANGE' function in oscilloscope mode for a quick and optimal display.
• Afterglow Mode for Intermittent Signals: If you are trying to capture transient or intermittent events, enable the 'Afterglow Mode' with a longer duration (e.g., 1S or Unlimited) to observe signal history.
• Probe Compensation: Regularly check and adjust probe compensation (using the dedicated output, 9 in Figure 4) to ensure accurate oscilloscope measurements.
• USB-C for Data Logging: For long-term monitoring or detailed analysis, connect the device to a computer via the USB Type-C port to export and log waveform data.

11. Troubleshooting

• Device does not power on: Ensure the battery is charged. Connect the USB-C cable to a power source and allow it to charge for some time. Check the power switch (5 in Figure 4).
• No waveform displayed in Oscilloscope mode: Check probe connections to CH1/CH2. Ensure the signal source is active. Try using the 'AUTO RANGE' function. Verify trigger settings are appropriate for the signal.
• Incorrect readings in Multimeter mode: Ensure test leads are connected to the correct input terminals (A, mA, VΩHz, COM) for the desired measurement. Check the selected measurement function.
• Signal Generator not outputting: Verify the output cable is connected to GEN Out (7 in Figure 4). Ensure the signal generator is enabled and configured with desired waveform, frequency, and amplitude.
• Screen is frozen: Try pressing the 'SAVE HOLD' button (11 in Figure 4) to see if it's in data hold mode. If not, power cycle the device.

12. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact the TOOLTOP Official Store directly. Keep your proof of purchase for warranty claims.