FNIRSI 2C53P Oscilloscope

Notice to Users

This manual provides detailed instructions on how to use the product and important precautions. Please read this manual carefully and follow the instructions to ensure optimal performance of the product.

• Do not use the instrument in flammable or explosive environments.
• Disposed batteries and obsolete instruments should not be treated as household waste; please follow the relevant national or local laws for proper disposal.
• If there are any quality issues with the instrument or if you have any questions regarding its use, please contact Sunnysoft s.r.o. promptly, and they will address your concerns in a timely manner.

1. Product Introduction

The FNIRSI-2C53P is a three-in-one dual-channel digital oscilloscope launched by FNIRSI, offering comprehensive functionality and high practicality, designed for repair and research industries. The device integrates an oscilloscope, multimeter, and signal generator.

The oscilloscope features an FPGA+MCU+ADC hardware architecture with a sampling rate of 250MS/s and a 50MHz analog bandwidth. It includes a built-in high-voltage protection module and supports peak voltage measurements up to ±400V. It also allows waveform capture, saving, and viewing for secondary analysis.

The multimeter function provides a 4.5-digit, 19999-count true RMS measurement, supporting AC/DC voltage and current measurements, as well as capacitance, resistance, diode, continuity, and temperature measurements.

The built-in DDS function signal generator can output 12 types of function signals, with a maximum output of 10MHz and adjustable frequency, amplitude, and duty cycle in 1Hz steps.

It features a 4.3-inch 480*272 resolution touchscreen display and a built-in 4000mAh rechargeable lithium battery with a standby time of up to 4 hours. Despite its compact size, it offers powerful and practical functions and is highly portable.

2. Panel Description

The FNIRSI 2C53P features several key interfaces and controls:

• Oscilloscope Channel 1 Interface
• Oscilloscope Channel 2 Interface
• Function Signal Generator Output Port
• Switch
• Charging Interface
• Reset Button
• Multimeter Interface
• Key Area (Menu, Run, Auto, Function buttons)

The display shows waveform data, including frequency, voltage (Vmax, Vmin, Vp-p), time (Heri), duty cycle, and amplitude.

3. Overall Machine Parameters

4. Introduction to Key Functions and Interface Operations

4.1 Oscilloscope Interface

The oscilloscope interface displays waveform data and provides controls for measurement and analysis.

• Channel 1 Settings: Allows adjustment of channel on/off, vertical voltage, probe ratio, coupling type, and 20M bandwidth limit.
• Channel 2 Settings: Similar settings as Channel 1.
• System Time Base: Refers to the horizontal grid representing time duration, determined by the sampling rate.
• Trigger Settings: Allows configuration of trigger mode, trigger edge, and trigger channel.
• Function Signal Generator Indication: Highlight indicates the generator is on; grey indicates it is off.
• Run/Pause: Switches between running and pausing the signal.
• Power Indicator: Shows the system power status.
• Waveform Display: Shows captured waveforms for Channel 1 and Channel 2.
• Trigger X Position Indicator Arrow: Indicates the trigger point.
• Trigger Voltage Indicator Icon: Shows the trigger threshold.
• Cursor Operations: Allows for cursor adjustments.
• Menu Buttons: Home, Run/Stop, Auto Measure, Function.

Oscilloscope Menu Options:

• Measure: Select measurement parameters to display.
• Save: Saves the current oscilloscope screen as a BMP file to the USB memory stick.
• Cursor: Selects X1-X2, Y1-Y2 display for cursor analysis.
• Calculation: Options for displaying calculations like 1+2, 1-2, 1*2, 1/2, FFT, -1, -2, |1|, |2|.
• Afterglow: Selects display persistence (e.g., 1S, unlimited).
• X-Y: Enters the X-Y display mode.
• Correction: Initiates calibration by removing probes and then re-inserting them.
• Image: Enters the Image Viewer to display saved screenshots.
• 50%: Automatically adjusts bias voltage, trigger voltage, etc.
• Micro: Fine/coarse adjustment for waveform speed.

4.2 Signal Generator Interface Description

The signal generator interface allows selection and configuration of various waveforms.

• Signal Type Selection: Choose from 12 types of waveforms including sinusoidal, square, sawtooth, half-wave, full-wave, positive/negative step, DC, exponential rise/fall, multi-audio, and sync pulse.
• Waveform Selection Paging: Use Previous/Next buttons to cycle through waveform types.
• Run/Pause: Controls signal generation.
• Frequency: Set frequency values (up to 10,000,000 Hz).
• Amplitude: Set amplitude values (0.1V-3.0V).
• Duty Cycle: Set duty cycle for square waves (0-100%).
• Value Input Area: Input specific values for Frequency, Amplitude, or Duty Cycle, confirmed by clicking 'Confirm'.

4.3 Digital Multimeter Interface Description

The digital multimeter interface displays measurements and allows mode switching.

• Mode Switch: Select different measurement modes.
• DC/AC Switch: Toggle between DC and AC for voltage, current (mA), and current (A) measurements.
• Measurement Parameters: Displays the current measurement mode and parameters.
• Data Saving: Save up to five measurement parameters.
• Max/Min Value Display: Shows maximum and minimum values and their variation over time.
• Run/Pause: Stop or resume multimeter measurements.
• Connection Guide: Provides prompts for correct connection points based on the selected mode.

Gear Introduction (Multimeter Connections):

• High Current Measurement: Connect red probe to 10A jack, black probe to COM. Note: Currents >10A may blow the fuse.
• Low Current Measurement: Connect red probe to mA jack, black probe to COM. Note: Currents >1A may blow the fuse.
• Auto, Voltage, Resistance, Capacitance, Temperature, Diode/Continuity Measurement: Connect red probe to the first hole, black probe to COM. Select the appropriate function.
• Auto Range: Automatically detects voltage and resistance, and AC/DC voltage.
• Diode/Continuity Range: For continuity, a buzzer sounds if resistance <50Ω. For diodes, displays forward bias. Displays "OL" if polarity is reversed or the diode is damaged.

5. Firmware Upgrade

To upgrade the firmware, connect the device to a computer, place the firmware file in the "Upgrade file" folder on the USB drive, disconnect the USB, shut down, and restart the device. It will automatically enter the upgrade page. The device will shut down automatically after the upgrade.

6. Precautions

• When using both channels simultaneously, connect the ground clips of the two probes together. Do not connect ground clips to different potentials, especially on high-power devices or 220V, to prevent damage to the oscilloscope's mainboard due to short-circuiting internal ground lines.
• The BNC end of the oscilloscope can tolerate a maximum input of 400V. Do not input voltage exceeding 400V when using the 1X probe switch.
• Use a separate charging head for charging. Do not use the power supply of other devices or the USB port, as this may cause a short circuit of the mainboard ground lines.
• Before use, check insulation near the shell and interfaces for damage.
• Hold the protective device behind the test probe with your fingers.
• When measuring a circuit, do not touch any input terminal ports.
• Disconnect test probes and circuit connections before changing the range.
• Users should be cautious of electric shock when measuring DC voltage >36V or AC voltage >25V.
• A low battery warning will prompt timely charging to maintain measurement performance.

7. Production Information

For any questions, FNIRSI users can contact Shenzhen FNIRSI Technology Co., LTD. for satisfactory solutions and an extra 6 months warranty.

Shenzhen FNIRSI Technology Co., LTD.

Address: West of Building C, Weida Industrial Park, Dalang Street, Longhua District, Shenzhen, Guangdong

Email: fnirsiofficial@gmail.com (Business) / fnirsiofficialcs@gmail.com (Equipment service)

Tel: 0755-28020752 / +8613536884686

For user manuals, APP, and software, visit www.fnirsi.cn.