GOCHIFIX 3-in-1 Oscilloscope, Multimeter, and Waveform Generator User Manual

1. Introduction

The GOCHIFIX F32021204606 is a versatile 3-in-1 handheld device integrating a portable oscilloscope, a digital multimeter, and a waveform generator. Designed for a wide range of applications including car repair, appliance repair, electronic repair, and educational research, this instrument offers high-speed sampling, accurate measurements, and convenient data storage in a compact and portable design.

2. Product Features

• 3-in-1 Functionality: Combines a 12MHz analog bandwidth oscilloscope, a 6000-count digital multimeter, and a signal source.
• One-Key Switching: Quickly switch between modes (Oscilloscope, Multimeter, Signal Generator) by pressing the 'AUTO' button for 2 seconds.
• High-Speed Oscilloscope: Features a 50Msps sampling rate for accurate signal analysis within a 12MHz bandwidth. Waveform amplitude up to 200V/div, max measurement 1600Vpp.
• Waveform Generator: Capable of outputting Sine, Triangle, and Square waveforms for debugging and signal analysis.
• 6000-Count Multimeter: Provides higher resolution for more accurate measurement results compared to 4000-count devices.
• Power-Saving Design: Equipped with a replaceable 18650 lithium battery and Type-C charging interface. Features automatic sleep after 15 minutes of inactivity for extended battery life (over 8 hours continuous use).
• Enhanced Knob Dial: Direct switching to oscilloscope mode for AC and DC voltage measurements by rotating the knob.
• Data Storage: Stores up to 100 sets of data and 10 waveforms, with real-time and stored data displayed on the same screen.
• Portable Design: Compact dimensions (6.3 x 3.3 x 1.3 inches) and lightweight (0.44 lbs) for easy portability.

3. Package Contents

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

• 1 x GOCHIFIX 3-in-1 Oscilloscope Multimeter Waveform Generator
• 1 x Pair of Test Leads
• 1 x Type-C Charging Cable
• 1 x User Manual
• 1 x Portable Bag
• 1 x Packing Box

4. Specifications

5. Device Overview and Controls

Familiarize yourself with the device's layout and controls before operation.

Key Functions:

• AUTO Button: Short press for automatic waveform capture in oscilloscope mode. Press and hold for 2 seconds to switch between Oscilloscope, Multimeter, and Signal Generator modes.
• F1-F4 Buttons: Multi-function keys whose specific function depends on the active mode (e.g., adjusting time base, voltage amplitude, trigger settings, waveform type, frequency, duty cycle, output voltage).
• Light Bulb Icon Button: Controls backlight and signal source settings.
• SAVE Button: Short press to save current data or waveform. Press and hold for 2 seconds to enter data retrieval mode.
• Rotary Knob: Selects measurement functions (OFF, V~, mV, Ω, Cx, Hz/%, mA, µA, 10A, OSC VDCX).
• Input Terminals: MAX 10A FUSE, MAX 600mA FUSE, COM, CAT II 1000V.

6. Setup

6.1. Battery Installation and Charging

1. The device comes with a replaceable 18650 Lithium Ion battery. Ensure it is correctly installed according to the polarity markings.
2. To charge the device, connect the provided Type-C cable to the charging port on the side of the device and to a suitable USB power adapter (not included).
3. The charging port is protected by a rubber cover. Ensure it is properly sealed when not charging to prevent dust and moisture ingress.

6.2. Connecting Test Leads

1. For most measurements, connect the black test lead to the 'COM' (common) input jack.
2. Connect the red test lead to the appropriate input jack based on the desired measurement:
   • For voltage (V~, mV), resistance (Ω), capacitance (Cx), frequency (Hz/%), diode, and continuity tests, connect to the 'CAT II 1000V' jack.
   • For current measurements up to 600mA (mA, µA), connect to the 'MAX 600mA FUSE' jack.
   • For current measurements up to 10A (10A), connect to the 'MAX 10A FUSE' jack.
3. Always ensure test leads are securely connected before taking measurements.

7. Operating Instructions

7.1. Power On/Off and Mode Switching

1. To power on the device, rotate the knob from 'OFF' to any measurement function.
2. To switch between Oscilloscope, Multimeter, and Signal Generator modes, press and hold the 'AUTO' button for 2 seconds. The display will indicate the active mode.
3. To power off, rotate the knob to the 'OFF' position. The device also has an automatic sleep function after 15 minutes of no operation.

7.2. Oscilloscope Mode Operation

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

1. Entering Oscilloscope Mode: Rotate the knob to 'OSC VDCX' or press and hold 'AUTO' for 2 seconds until 'Oscilloscope Status' is displayed.
2. Automatic Capture: Short press the 'AUTO' button to automatically adjust the time base and voltage amplitude for a stable waveform display.
3. Manual Adjustments:
   • Use F1 (TIME) to adjust the time base (horizontal scale).
   • Use F2 (VOLT) to adjust the voltage amplitude (vertical scale).
   • Use F3 (TRIG) to access trigger settings for stable waveform capture.
4. Waveform Amplitude: The device supports waveform amplitudes up to 200V/div, with a maximum measurement of 1600Vpp.

7.3. Multimeter Mode Operation

The multimeter function allows for precise measurement of various electrical parameters.

1. Entering Multimeter Mode: Rotate the knob to the desired measurement function (V~, mV, Ω, Cx, Hz/%, mA, µA, 10A) or press and hold 'AUTO' for 2 seconds until 'Multimeter Status' is displayed.
2. Function Selection: Rotate the knob to select the specific measurement function (e.g., DC/AC Voltage, Resistance, Capacitance, Current).
3. Range Selection: Press F1 and F2 simultaneously to switch between manual and automatic ranging.
4. Important: Always ensure correct input and output polarities when connecting test leads to the circuit under test to obtain accurate measurement results and prevent damage to the device or circuit.

7.4. Waveform Generator Mode Operation

The waveform generator can output various signals for testing and debugging.

1. Entering Waveform Generator Mode: Press and hold 'AUTO' for 2 seconds until 'Signal Source Status' is displayed.
2. Waveform Selection: Use F1 (WAVE) to select the desired waveform type: Sine, Triangle, or Square.
3. Frequency Adjustment: Use F2 (FREQ) to adjust the output frequency.
4. Duty Cycle Adjustment: Use F3 (DUTY) to adjust the duty cycle (for square and triangle waves).
5. Output Voltage Adjustment: Use F4 (VOLT) to adjust the output voltage amplitude.
6. Output On/Off: Use the light bulb icon button to toggle the signal source output ON or OFF.

7.5. Data Storage and Retrieval

The device allows you to save and review measurement data and waveforms.

1. Saving Data: Press the 'SAVE' button to store the current measurement data or waveform. The device can store up to 100 sets of data and 10 waveforms.
2. Retrieving Data: Press and hold the 'SAVE' button for 2 seconds to enter data retrieval mode. Use the F1-F4 buttons to navigate through the stored data and waveforms.

8. Maintenance

8.1. Cleaning

To maintain the device's performance and appearance:

• Wipe the device with a soft, damp cloth. Do not use abrasive cleaners or solvents.
• Ensure no liquids enter the device, especially through the input jacks or charging port.

8.2. Battery Care

• The device uses a replaceable 18650 Lithium Ion battery. If the battery needs replacement, ensure you use a battery of the same type and specifications.
• Charge the battery regularly, even if the device is not in use, to prolong its lifespan.
• Avoid exposing the device or battery to extreme temperatures.

8.3. Fuse Replacement

WARNING: Risk of electric shock. Ensure the device is powered off and disconnected from any power source or circuit before attempting to replace fuses.

1. If a fuse blows, the corresponding current measurement function will cease to work.
2. To replace a fuse, carefully open the battery compartment or the designated fuse access panel (refer to the device's physical markings if available).
3. Replace the blown fuse with a new one of the correct type and rating:
   • For the mA/µA range: 600mA/250V fuse.
   • For the 10A range: 10A/250V fuse.
4. Close the compartment or panel securely after replacement.

8.4. Storage

• When not in use for extended periods, store the device in its portable bag in a cool, dry place, away from direct sunlight and extreme temperatures.
• Ensure the device is powered off before storage.

9. Troubleshooting

If you encounter issues with your GOCHIFIX 3-in-1 device, consider the following basic troubleshooting steps:

• Device not powering on: Check if the battery is charged. Ensure the battery is correctly installed.
• Inaccurate readings: Verify that the test leads are correctly connected to the appropriate input jacks and the rotary knob is set to the correct function. Ensure the circuit under test is properly connected.
• No current measurement: Check if the corresponding fuse (600mA or 10A) has blown and replace it if necessary (refer to Section 8.3).
• Unstable oscilloscope waveform: Try using the 'AUTO' button for automatic adjustment. Adjust the time base (F1) and voltage amplitude (F2) manually. Check trigger settings (F3).
• Signal Generator not outputting: Ensure the signal source output is turned ON (light bulb icon button). Check waveform, frequency, duty cycle, and voltage settings.

If problems persist, please contact customer support for further assistance.

10. User Tips

• Always double-check your connections and settings before taking any measurements, especially when dealing with live circuits.
• Utilize the automatic sleep function to conserve battery life during periods of inactivity.
• Take advantage of the data storage feature to record and review important measurements or waveforms for later analysis.
• Keep the device and its accessories clean and stored in the provided portable bag to protect them from damage.

11. Warranty and Support

This GOCHIFIX product is designed for reliability and performance. For any questions, technical assistance, or support inquiries, please refer to the contact information provided by your retailer or the official GOCHIFIX support channels. Please retain your proof of purchase for warranty claims.