FNIRSI 2D15P 3-in-1 Digital Oscilloscope Multimeter DDS Signal Generator Instruction Manual

1. Introduction

The FNIRSI 2D15P is a versatile 3-in-1 device combining a 100MHz digital oscilloscope, a 19,999-count TRMS multimeter, and a 10MHz DDS signal generator. Designed for precision and ease of use, it features a 4.3-inch IPS touchscreen and robust architecture for various electrical testing and analysis applications.

2. Safety Information

Always observe standard safety precautions when operating electrical testing equipment. Ensure proper probe connections and be aware of live voltage. Refer to local electrical safety guidelines. Do not operate the device if it appears damaged or malfunctioning. Always disconnect power to the circuit under test before making connections, especially when dealing with high voltages or currents.

3. Package Contents

The FNIRSI 2D15P package includes the following items:

• FNIRSI 2D15P Scope DMM Unit
• P6100 Probe * 2
• Multimeter Test Leads
• Alligator Clip Cable
• USB Data Cable

Figure 3.1: FNIRSI 2D15P with included probes, test leads, and cables.

4. Product Overview

4.1 External Structure

The device features a 4.3-inch IPS touchscreen and various controls for intuitive operation. Key components include:

• 4.3-inch IPS Display: Touch-enabled for interactive control.
• Power On/Off Button: For device power management.
• Oscilloscope Channels (CH1, CH2): Yellow for Channel 1, Blue for Channel 2.
• Signal Generator Channel (GEN): Gray for DDS output.
• Vertical Sensitivity Adjustment Knob: Controls vertical scaling.
• Horizontal Timebase Adjustment Knob: Controls horizontal scaling.
• Voltage Offset/Cursor Adjustment Knob: Adjusts waveform position and cursor.
• Single Trigger Button: For capturing single events.
• Auto Trigger Button: For automatic waveform display.
• Function Button Area: Includes Cursor, Display, Meas, Save, Math, 50%, CH1, CH2, Trigger, DDS, Run, Menu.
• Trigger Level/Delay Time Control Knob: Adjusts trigger parameters.
• Restart Button Hole: For device reset.

Figure 4.1: Front view of the FNIRSI 2D15P, highlighting the display and control interface.

4.2 Rear View

The rear of the device includes essential ports and features for power and stability.

• Power Interface: Supports Type-C fast charging, rated 12V, 1A.
• Low-noise Cooling Fan: Ensures stable operation without interference.
• Foldable Stand: Provides stable support for safe use.
• Standard 1/4-inch Screw Mount: For mounting options.

Figure 4.2: Rear view of the FNIRSI 2D15P, showing the cooling fan and adjustable anti-slip stand.

5. Setup

5.1 Probe Calibration

Before taking measurements, it is recommended to calibrate the oscilloscope probes for accurate readings.

1. Set the probe switch to 10X.
2. On the oscilloscope, ensure the probe attenuation setting is also 10X (Vertical menu).
3. Connect the probe to the calibration port (usually a square wave output).
4. Press the 'Auto' button on the oscilloscope.
5. Adjust the probe's compensation (usually a small screw on the probe body) until a clean square wave is displayed on the screen.

5.2 Channel Settings

Configure the input channels (CH1, CH2) for your specific measurement needs.

• Tap CH1 or CH2 to enable/disable the channel display.
• Adjust probe attenuation (1X, 10X, 100X) to match your physical probe.
• Select coupling method (AC, DC) based on the signal type.
• Enable/disable the 20MHz bandwidth limit for noise reduction.

5.3 Trigger Settings

The trigger system stabilizes repetitive waveforms and captures single-shot events.

• Select the trigger channel (CH1 or CH2).
• Choose trigger edge (Rising, Falling, Both).
• Set trigger mode (Auto, Normal, Single).
• Adjust the trigger level and delay time using the dedicated knob.

5.4 Automatic Adjustment

After connecting a signal source, press the 'Auto' button for automatic measurement and display of the waveform.

5.5 Waveform Scaling and Shift

Manually adjust the time base and vertical sensitivity knobs to scale the waveform. The voltage offset knob moves the waveform vertically.

5.6 Cursor Measurement

Press 'Cursor' to enable cursor settings. Select and move dashed lines to measure specific points on the waveform. Measurement values appear in the top-left corner.

5.7 Display Settings

The 'Display' button allows adjustment of grid brightness, waveform brightness, grid type, waveform type (vector/point), and color temperature settings.

5.8 Parameter Display

Press 'Meas' to open measurement parameter settings. The device supports 13 parameter displays, which can be individually turned on or off.

5.9 Waveform Saving

Short press 'Save' to save a waveform screenshot. Saved images can be viewed from the menu.

5.10 One-Key Centering

A short press of the '50%' button centers the channel position, trigger level, and time base automatically.

5.11 USB Sharing

Enable USB sharing to connect the device to a computer via a data cable for exporting screenshots and firmware updates.

6. Operating Modes

6.1 Oscilloscope Operation

The oscilloscope function allows for detailed waveform analysis in various applications.

Figure 6.1: Examples of oscilloscope applications, including LIN Bus troubleshooting, audio signal analysis, and power ripple detection.

Normal Trigger Mode

In normal trigger mode, the oscilloscope waits for a trigger event before displaying a waveform. If no trigger event occurs, the screen remains blank or displays the last triggered waveform.

Single Trigger Mode

Single trigger mode is used to capture non-repetitive or transient signals. The oscilloscope waits for a trigger event, captures one waveform, and then stops. This allows for detailed analysis of a single event.

6.2 Multimeter Operation

The integrated multimeter provides 19,999 TRMS counts for various electrical measurements.

Figure 6.3: Multimeter functions including capacitance, resistance, continuity, diode, DC voltage, AC voltage, DC current, and AC current measurements.

Auto Mode

In Auto mode, the multimeter automatically detects the type of measurement and displays the reading, along with max/min values and a data fluctuation curve.

DC Voltage Measurement

Connect the multimeter test leads to the DC voltage source. The device will display the DC voltage reading.

AC Voltage Measurement

Connect the multimeter test leads to the AC voltage source. The device will display the AC voltage reading.

Resistance Measurement

Connect the multimeter test leads across the component to measure its resistance.

Continuity Test

Use the continuity test to check for open or closed circuits. The device will emit a buzzer sound for continuity.

Diode Test

Measure the forward voltage drop of a diode using the diode test function.

Capacitance Measurement

Measure the capacitance of a component by connecting the test leads across it.

DC Current Measurement

For low current (mA range), plug the red probe into the mA port. For high current (A range), switch the red probe to the 10A range. Connect the multimeter in series with the circuit to measure DC current.

AC Current Measurement

For low current (mA range), plug the red probe into the mA port. For high current (A range), switch the red probe to the 10A range. Connect the multimeter in series with the circuit to measure AC current.

6.3 Signal Generator Operation

The DDS signal generator can output various waveforms up to 10MHz.

Figure 6.5: Available waveforms from the DDS signal generator: Sine, Square, Ramp, DC, Noisy, Half-Wave, Full-Wave, Positive Step, and Negative Step.

• Press 'DDS' or tap 'DS' on the screen to enter the signal generator interface.
• Select the desired waveform type (Sine, Square, Ramp, DC, Noisy, Half-Wave, Full-Wave, Positive Step, Negative Step).
• Adjust frequency (0-10MHz), amplitude (0.1-3Vpp), and duty cycle (0-100%) as needed.
• Connect the output of the signal generator (GEN port) to the circuit or device under test.

7. Maintenance

• Keep the device clean and dry. Use a soft, damp cloth for cleaning; avoid abrasive cleaners.
• Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
• Regularly check probes and test leads for damage. Replace if necessary.
• The built-in 5000mAh lithium battery supports extended field use. Charge via Type-C for uninterrupted measurements.
• Quiet fan cooling ensures stable operation. Ensure vents are not obstructed.

8. Troubleshooting

9. Specifications

Figure 9.1: Detailed product specifications for Oscilloscope, Multimeter, and Signal Generator functions.

9.1 Oscilloscope Specifications

• Channel: Dual Channel
• Sample Rate: 500MS/s
• Analog Bandwidth: 100MHz
• Memory Depth: 10K, 100K, 1M
• Input Impedance: 1MΩ
• Timebase Range: 5ns - 50s
• Vertical Sensitivity: 10mV - 10V/div
• Max Input Voltage: 800V (x10 Probe)
• Trigger Mode: Auto, Normal, Single
• Trigger Type: Rising, Falling, Both Edges
• Display Mode: Dot, Vector, Color Temp
• Coupling: AC/DC
• Persistence: Min/2s/5s/10s/20s/50s/∞
• Math Operations: 6 Basic Ops
• Waveform Capture: Yes
• Waveform Export: Yes
• Cursor Measurement: Yes

9.2 Multimeter Specifications

• DC Voltage: 1.9999V/19.999V/199.99V/750.0V
• AC Voltage: 1.9999V/19.999V/199.99V/750.0V
• DC Current: 19.999mA/1.9999A/19.999A
• AC Current: 19.999mA/1.9999A/19.999A
• Resistance: 19.999MΩ/199.99MΩ/19.999kΩ/199.99kΩ
• Capacitance: 999.9uF/19.999uF/199.99nF/19.999nF/9.999mF
• Diode: Yes
• Continuity: Yes

9.3 Signal Generator Specifications

• Channel: 1CH
• Frequency: 0 - 10MHz
• Amplitude: 0.1 - 3.0Vpp
• Duty Cycle: 0 - 100%

10. Warranty and Support

For warranty information and technical support, please refer to the manufacturer's official website or contact your retailer. Keep your purchase receipt for warranty claims.

11. Product Highlights

• 3-in-1 Functionality: Combines a 100MHz digital oscilloscope, 19,999-count TRMS multimeter, and 10MHz DDS signal generator.
• High Performance: Features 500MS/s sampling rate and 100MHz bandwidth for precise signal capture.
• Intuitive Interface: Equipped with a 4.3-inch IPS touchscreen for fast and easy operation.
• Advanced Analysis: Offers 13 parameters, 6 math functions, Afterglow, and Cursor measurement for detailed waveform analysis.
• Durable and Portable: Built-in 5000mAh lithium battery, Type-C charging, quiet fan cooling, and adjustable stand for field use.