1. Introducció
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. Informació de seguretat
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 o corrents.
3. Contingut del paquet
The FNIRSI 2D15P package includes the following items:
- FNIRSI 2D15P Scope DMM Unit
- P6100 Probe * 2
- Cables de prova del multímetre
- Cable de pinça de cocodril
- Cable de dades USB

Figure 3.1: FNIRSI 2D15P with included probes, test leads, and cables.
4. Producte acabatview
4.1 Estructura externa
The device features a 4.3-inch IPS touchscreen and various controls for intuitive operation. Key components include:
- Pantalla IPS de 4.3 polzades: Touch-enabled for interactive control.
- Botó d'engegada / apagada: 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.

Figura 4.1: Frontal view of the FNIRSI 2D15P, highlighting the display and control interface.
4.2 Darrera View
The rear of the device includes essential ports and features for power and stability.
- Interfície d'alimentació: Supports Type-C fast charging, rated 12V, 1A.
- Low-noise Cooling Fan: Ensures stable operation without interference.
- Suport plegable: Provides stable support for safe use.
- Standard 1/4-inch Screw Mount: For mounting options.

Figura 4.2: posterior view of the FNIRSI 2D15P, showing the cooling fan and adjustable anti-slip stand.
5. Configuració
5.1 Calibració de la sonda
Before taking measurements, it is recommended to calibrate the oscilloscope probes for accurate readings.
- Set the probe switch to 10X.
- On the oscilloscope, ensure the probe attenuation setting is also 10X (Vertical menu).
- Connect the probe to the calibration port (usually a square wave output).
- Press the 'Auto' button on the oscilloscope.
- Adjust the probe's compensation (usually a small screw on the probe body) until a clean square wave is displayed on the screen.
Video 5.1: Demonstrates probe calibration and various oscilloscope settings (0:11-0:45 for calibration).
5.2 Configuració del canal
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 Configuració del disparador
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 Ajust automàtic
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 Mesurament del cursor
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 Configuració de la pantalla
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. Modes de funcionament
6.1 Funcionament de l'oscil·loscopi
The oscilloscope function allows for detailed waveform analysis in various applications.

Figura 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.
Mode d'activació únic
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.
Video 6.2: Demonstrates how to test AC mains, SMPS, and crystal oscillators using the oscilloscope function.
6.2 Funcionament del multímetre
The integrated multimeter provides 19,999 TRMS counts for various electrical measurements.

Figure 6.3: Multimeter functions including capacitance, resistance, continuity, diode, DC voltage, vol. ACtage, DC current, and AC current measurements.
Mode automàtic
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 Mesura
Connect the multimeter test leads to the DC voltage source. The device will display the DC voltage lectura.
Video 6.4: Demonstrates how to measure battery voltage using the oscilloscope and multimeter functions.
Vol. ACtage Mesura
Connect the multimeter test leads to the AC voltage source. The device will display the AC voltage lectura.
Mesura de Resistència
Connect the multimeter test leads across the component to measure its resistance.
Prova de continuïtat
Use the continuity test to check for open or closed circuits. The device will emit a buzzer sound for continuity.
Prova de díode
Measure the forward voltage drop of a diode using the diode test function.
Mesura de la capacitat
Measure the capacitance of a component by connecting the test leads across it.
Mesura de corrent DC
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.
Mesura de corrent altern
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. Manteniment
- Mantingueu el dispositiu net i sec. Utilitzeu un suau, damp drap per netejar; eviteu productes de neteja abrasius.
- Guardeu el dispositiu en un lloc fresc i sec, allunyat de la llum solar directa i de temperatures extremes.
- 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. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| No es mostra cap forma d'ona | Incorrect trigger settings, probe not connected, signal too small/large. | Check trigger mode (Auto recommended), ensure probe is connected and calibrated, adjust vertical sensitivity and time base. |
| Forma d'ona distorsionada | Improper probe compensation, bandwidth limit enabled, signal noise. | Perform probe calibration, disable 20MHz bandwidth limit if not needed, check signal source for noise. |
| Multimeter readings inaccurate | Incorrect range selected (if not in Auto), poor lead connection, battery low. | Ensure correct mode/range, check lead connections, charge battery. |
| Device freezes or malfunctions | Software glitch, thermal issue. | Perform a factory reset (Menu > Set > Factory Reset). Ensure proper ventilation. |
9. Especificacions

Figure 9.1: Detailed product specifications for Oscilloscope, Multimeter, and Signal Generator functions.
9.1 Especificacions de l'oscil·loscopi
- Canal: Doble canal
- Sampli Rate: 500 MS/s
- Amplada de banda analògica: 100 MHz
- Profunditat de memòria: 10K, 100K, 1M
- Impedància d'entrada: 1 MΩ
- Timebase Range: 5ns - 50s
- Sensibilitat vertical: 10mV - 10V/div
- Vol. d'entrada màximatage: 800V (x10 Probe)
- Mode de commutació: Automàtic, Normal, Individual
- Tipus d'activador: Rising, Falling, Both Edges
- Mode de visualització: Dot, Vector, Color Temp
- Acoblament: AC/DC
- Persistència: Min/2s/5s/10s/20s/50s/∞
- Math Operations: 6 Basic Ops
- Waveform Capture: Sí
- Waveform Export: Sí
- Mesura del cursor: Sí
9.2 Multimeter Specifications
- DC Voltage: 1.9999V/19.999V/199.99V/750.0V
- Vol. ACtage: 1.9999V/19.999V/199.99V/750.0V
- Corrent DC: 19.999mA/1.9999A/19.999A
- Corrent CA: 19.999mA/1.9999A/19.999A
- Resistència: 19.999MΩ/199.99MΩ/19.999kΩ/199.99kΩ
- Capacitat: 999.9uF/19.999uF/199.99nF/19.999nF/9.999mF
- Díode: Sí
- Continuïtat: Sí
9.3 Signal Generator Specifications
- Canal: 1 canals
- Freqüència: 0 - 10MHz
- Amplatitud: 0.1 - 3.0Vpp
- Cicle de treball: 0 - 100%
10. Garantia i Suport
Per obtenir informació sobre la garantia i assistència tècnica, consulteu el lloc web oficial del fabricant. weblloc web o poseu-vos en contacte amb el vostre distribuïdor. Conserveu el rebut de compra per a reclamacions de garantia.
11. Aspectes destacats del producte
- Funcionalitat 3 en 1: Combines a 100MHz digital oscilloscope, 19,999-count TRMS multimeter, and 10MHz DDS signal generator.
- Alt rendiment: Features 500MS/s sampling rate and 100MHz bandwidth for precise signal capture.
- Interfície intuïtiva: 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.
- Durador i portàtil: Built-in 5000mAh lithium battery, Type-C charging, quiet fan cooling, and adjustable stand for field use.





