FNIRSI 2D15P User Manual - FNIRSI Oscilloscopes Store in UK

⚠️ SAFETY INFORMATION

Safety Terms and Symbols

WARNING: Indicates conditions or actions that could result in personal injury or loss of life.

CAUTION: Indicates conditions or actions that may damage the product or other property.

DANGER: Indicates that performing this operation may cause injury.

Safety Precautions

Before Use
- Read all safety information and operating instructions
- Ensure proper grounding when measuring high voltages
- Use only specified probes and accessories
During Operation
- Do not exceed maximum input voltage ratings
- Keep hands away from probe tips when measuring high voltages
- Ensure proper ventilation during operation
- Do not operate in wet or explosive environments
Electrical Safety
- Maximum input voltage: Check specifications for each measurement mode
- Always use appropriate probe attenuation (1×, 10×, 100×)
- Never touch exposed circuit parts when power is applied
- Be aware of residual charges in capacitors
Battery Safety
- Use only the provided charger (5V/2A recommended)
- Do not expose to extreme temperatures
- Built-in 5000mAh rechargeable lithium battery
- Can be used while charging via Type-C port
Environmental Conditions
- Operating temperature: 0°C to 40°C
- Storage temperature: -20°C to 60°C
- Humidity: < 85% RH (non-condensing)
- Altitude: < 2000m

PRODUCT OVERVIEW

What’s in the Box

Standard Accessories:

FNIRSI 2D15P main unit
2× Oscilloscope probes (100MHz, 1×/10×)
2× Multimeter test leads
Type-C charging cable
User manual
Carrying pouch
Calibration certificate

Order your 2D15P today – 2-day UK delivery, 60-day easy returns

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Control Panel Reference

1. Display Area
Touchscreen operation supported

2. Signal Ports
• Channel signal input (CH1/CH2)
• Signal generator output (DDS)

3. Vertical/Horizontal Knobs
• Vertical: Adjusts waveform height and voltage range
• Horizontal: Adjusts waveform width and time base

4. Function Knob
• Cursor enabled: Rotate to move cursor left/right (press to switch up/down)
• Cursor disabled: Adjusts channel voltage offset

5. Function Buttons
• Cursor – Activate cursor for precise voltage/time measurements
• Display – Adjust brightness, color, persistence, grid type, display mode
• Measure – Select from 13 measurement types (frequency, amplitude, duty cycle, etc.)
• Save – Capture screenshot of current display
• Math – Enable waveform math functions (6 operation types)
• 50% – Quick-set trigger level and offsets to center position
• Trigger – Configure trigger channel, mode, and edge settings
• Run – Start/stop signal acquisition (green = running, red = stopped)
• DDS – Signal generator settings (sine, square, triangle waveforms)

6. CH1/CH2 Switch
Quick channel selection for fast waveform viewing

7. Menu Button
Open main menu for function selection and adjustments

8. Trigger Control Knob
Adjust trigger level and delay for stable waveform display

9. Multimeter Interface
• 10A terminal (high current)
• mA terminal (low current)
• COM terminal (common ground)

10. Single Trigger
Capture one specific trigger event

11. Auto Trigger
Automatic trigger adjustment for stable display

Key Features

3-in-1 Functionality:

100MHz Dual-Channel Oscilloscope with phosphor display
True RMS Digital Multimeter (6000 counts)
Portable Design – 30% lighter and more compact

Oscilloscope Specifications:

Bandwidth: 100 MHz (dual channel)
Sampling Rate: 1 GSa/s (real-time)
Memory Depth: Configurable
Channels: 2 independent analog channels
Vertical Sensitivity: 5 mV/div to 10 V/div
Time Base: 2 ns/div to 50 s/div
Trigger Types: Edge, pulse, video, slope
Display: Phosphor persistence mode for capturing rare events

Multimeter Specifications:

DC Voltage: 600 mV to 1000V (±0.5% accuracy)
AC Voltage: 600 mV to 1000V (±1.0% accuracy)
DC Current: 60 mA to 10A (±1.0% accuracy)
AC Current: 60 mA to 10A (±1.5% accuracy)
Resistance: 600Ω to 60MΩ (±1.0% accuracy)
Capacitance: 10 nF to 100 mF (±3.0% accuracy)
Frequency: 10 Hz to 10 MHz
Duty Cycle: 0.1% to 99.9%
Diode Test: Yes
Continuity Test: Yes with buzzer
NCV (Non-Contact Voltage): Detection function
True RMS: Yes

General Specifications:

Display: 3.5″ IPS LCD with high resolution
Battery: 5000mAh rechargeable lithium-ion
Battery Life: Up to 6 hours continuous use
Charging: Type-C, 5V/2A (can use while charging)
Storage: Internal memory for waveforms and screenshots
Connectivity: USB for data transfer
Size: Compact handheld form factor (30% smaller than previous models)
Weight: Approximately 400g

FUNCTION OVERVIEW

Device Layout

Front Panel Controls:

Oscilloscope Section:

Channel 1 (CH1) input – BNC connector (yellow)
Channel 2 (CH2) input – BNC connector (cyan)
Signal generator output (if equipped)
Display screen (3.5″ IPS)
Control knobs and buttons

Multimeter Section:

COM (common) terminal – Black
VΩHz terminal – Red (voltage, resistance, frequency)
mA terminal – Red (current measurement up to 600mA)
10A terminal – Red (high current measurement)
Function rotary selector switch
Range/mode buttons

Side/Top Controls:

Power button
Menu/function buttons
Vertical position controls
Horizontal timebase control
Trigger controls
USB/Type-C port

Operating Modes

Mode 1: Oscilloscope Operation

Basic Oscilloscope Functions:

Channel Setup
- Turn CH1/CH2 on or off
- Set vertical sensitivity (V/div)
- Select coupling mode (DC, AC, GND)
- Choose probe attenuation (1×, 10×, 100×)
- Adjust vertical position
Timebase Control
- Adjust horizontal time scale (s/div)
- Position trigger point horizontally
- Enter roll/scroll mode for slow signals
Trigger Settings
- Select trigger source (CH1, CH2, EXT)
- Set trigger type (Edge, Pulse, Video, Slope)
- Adjust trigger level
- Choose trigger mode (Auto, Normal, Single)
- Set trigger edge (Rising, Falling, Both)
Measurement Functions
- Automatic measurements (up to 24 parameters)
- Cursor measurements (time, voltage)
- Math functions (Add, Subtract, Multiply, FFT)
- Statistical analysis
Display Modes
- Normal display
- Phosphor persistence – Shows signal history with intensity grading
- XY mode (Lissajous patterns)
- Roll mode for slow signals
Advanced Features
- Waveform storage and recall
- Screenshot capture
- Pass/Fail testing
- Automatic setup (Auto button)

Phosphor Display Mode: The phosphor persistence feature displays waveform history with different intensity levels, similar to analog oscilloscopes. This is extremely useful for:

Capturing intermittent glitches
Analyzing signal jitter
Viewing modulated signals
Observing rare events

Mode 2: Multimeter Operation

Measurement Functions:

Voltage Measurement (DC/AC)
- Rotate selector to V (DC) or V~ (AC)
- Connect red lead to VΩHz terminal
- Connect black lead to COM terminal
- Touch probes to measurement point
- Read display (True RMS for AC)
Current Measurement (DC/AC)
- For 0-600mA: Connect red lead to mA terminal
- For 0-10A: Connect red lead to 10A terminal
- Rotate selector to A (DC) or A~ (AC)
- Connect meter in series with circuit
- Read display
Resistance Measurement
- Rotate selector to Ω
- Connect leads to VΩHz and COM
- Touch probes to resistor
- Read resistance value
Capacitance Measurement
- Rotate selector to capacitance symbol
- Discharge capacitor before measuring
- Connect leads to VΩHz and COM
- Touch probes to capacitor
- Wait for stable reading
Diode Test
- Rotate selector to diode symbol
- Connect leads as for resistance
- Forward bias: displays voltage drop (typically 0.4-0.7V)
- Reverse bias: displays “OL” (open)
Continuity Test
- Rotate selector to continuity symbol ()))
- Touch probes to circuit points
- Buzzer sounds if resistance < 50Ω
- Display shows resistance value
Frequency Measurement
- Rotate selector to Hz
- Connect signal to VΩHz terminal
- Display shows frequency and duty cycle
Non-Contact Voltage Detection (NCV)
- Special mode for detecting AC voltage without contact
- Hold device near AC power line
- LED and/or buzzer indicates voltage presence
- Useful for finding live wires in walls

Mode 3: Combined Operation

The 2D15P allows simultaneous oscilloscope and multimeter operation:

View waveform on oscilloscope channels
Simultaneously measure DC voltage, current, or resistance with DMM
Ideal for power supply troubleshooting
Correlate waveform behavior with DC parameters

COMMON MEASUREMENT TASKS

Oscilloscope Measurements

1. Basic Signal Viewing

Quick Start:

Connect probe to CH1 input
Connect probe ground clip to circuit ground
Touch probe tip to signal point
Press AUTO button for automatic setup
Adjust vertical and horizontal scales as needed

Manual Adjustment:

If signal too large/small: Adjust V/div knob
If signal too fast/slow: Adjust s/div knob
If waveform not stable: Adjust trigger level

2. Measuring Digital Logic Signals

Setup:

Trigger mode: Normal (not Auto)
Coupling: DC
Probe: 10× position
Timebase: Start with 1 μs/div

Procedure:

Connect probe to logic signal
Set trigger level between high and low states
Choose rising or falling edge trigger
Capture signal and analyze timing

3. Power Supply Ripple Measurement

Setup:

Coupling: AC (blocks DC, shows only ripple)
Probe: 10×
Vertical sensitivity: Start with 10 mV/div
Bandwidth limit: ON (reduces noise)

Procedure:

Connect probe to power supply output
Wait 2-3 seconds for DC offset to stabilize
Press AUTO or manually adjust to see ripple
Measure pk-pk voltage for ripple amplitude

4. Frequency and Period Measurement

Automatic:

Press Measure menu
Select Frequency and Period parameters
Display shows measurements automatically

Manual with Cursors:

Enable time cursors
Position cursors at one complete cycle
Read ΔT (time difference)
Frequency = 1 / ΔT

5. Rise Time and Fall Time

Procedure:

Display clear edge transition
Enable time cursors
Position cursors at 10% and 90% amplitude points
Read rise time or fall time from ΔT

6. Pulse Width and Duty Cycle

Automatic:

Select Pulse Width+ and Duty Cycle+ measurements
For negative pulses, use Pulse Width- and Duty Cycle-

Manual:

Use time cursors to measure high time (t_high) and period (T)
Duty Cycle = (t_high / T) × 100%

Multimeter Measurements

1. Measuring Battery Voltage

Procedure:

Rotate selector to V (DC voltage)
Red lead to VΩHz, black to COM
Touch red to battery +, black to battery –
Read voltage on display

2. Testing LEDs and Diodes

Procedure:

Rotate selector to diode test mode
Disconnect component from circuit
Touch red probe to anode, black to cathode
Good diode: 0.4-0.7V (silicon), LED may light
Reverse polarity: Should show “OL”

3. Checking Fuse Continuity

Procedure:

Rotate selector to continuity mode ()))
Touch probes to both ends of fuse
Good fuse: Beep sound, ~0Ω displayed
Blown fuse: No beep, “OL” displayed

4. Measuring AC Line Voltage

⚠️ WARNING: High voltage – be extremely careful!

Procedure:

Rotate selector to V~ (AC voltage)
Ensure leads in correct terminals
Do not touch metal probe tips
Insert probes into outlet (line and neutral)
Read voltage (should be ~110V or ~220V depending on region)

5. Current Draw Testing

For currents < 600mA:

Rotate selector to A or A~
Red lead to mA terminal, black to COM
Break circuit and insert meter in series
Read current

For currents 600mA to 10A:

Move red lead to 10A terminal
Rotate selector appropriately
Insert in series with load
Do not exceed 10A
Do not measure for more than 10 seconds at high current

6. Capacitor Testing

Procedure:

Discharge capacitor completely first!
Rotate selector to capacitance mode
Remove capacitor from circuit
Connect leads to capacitor terminals
Wait for reading to stabilize (may take several seconds for large caps)
Compare to rated value (±20% tolerance is normal)

❗ TROUBLESHOOTING

Oscilloscope Issues

Problem	Possible Cause	Solution
No display / blank screen	Power off or battery dead	Charge device, press power button
No waveform, only flat line	Paused or incorrect settings	Press RUN button, press AUTO
Waveform unstable / rolling	Trigger not set properly	Adjust trigger level, change trigger mode
Signal too small	Vertical sensitivity too low	Decrease V/div setting
Signal clipped (top/bottom cut off)	Vertical sensitivity too high	Increase V/div setting
Signal too fast/slow	Timebase incorrect	Adjust s/div setting
Measurements show 0	Signal not triggered or insufficient waveform	Ensure proper trigger, show full cycles on screen
Cannot capture glitch	Trigger mode wrong	Use Single trigger mode, adjust trigger
Display flickering	Interference or loose connection	Check probe connections, move away from interference

Multimeter Issues

Problem	Possible Cause	Solution
Display shows “OL”	Over-range or open circuit	Check connections, select higher range
Display shows “0” or very low	Short circuit or wrong mode	Check for shorts, verify function selector
No beep in continuity mode	Resistance > 50Ω or open	Check connections, component may be faulty
Erratic readings	Poor contact or interference	Clean probe tips, ensure good contact
Current measurement blows fuse	Measured in voltage mode or current too high	Replace fuse, use correct terminals
Battery not charging	Wrong charger or faulty port	Use 5V/2A Type-C charger, check port
Inaccurate readings	Needs calibration	Perform zero adjustment, contact service

General Issues

Problem	Possible Cause	Solution
Device won’t turn on	Battery fully discharged	Charge for 30 minutes, then try
Device turns off suddenly	Low battery or overheat	Charge device, allow to cool
Cannot save files	Memory full	Delete old files via menu
USB not recognized	Wrong cable or driver	Use provided cable, install drivers
Screen not responding	Software glitch	Restart device (hold power 10 seconds)

MAINTENANCE

Regular Maintenance

Daily:

Wipe screen and case with soft, dry cloth
Check probe tips for damage or wear
Ensure all terminals are clean

Weekly:

Discharge and recharge battery fully (battery health)
Check probe compensation (square wave test)

Monthly:

Clean all connectors with contact cleaner
Verify calibration with known sources
Update firmware if available

Probe Maintenance

Probe Compensation:

Connect probe to CAL output terminal
Observe square wave on screen
If top is rounded or peaked, adjust probe trimmer capacitor
Adjust until square wave has flat top and sharp corners

Probe Care:

Do not bend probe cables sharply
Store with probe tips protected
Replace damaged probe tips immediately
Keep probes dry and clean

Battery Care

Charge regularly – Don’t let battery fully discharge frequently
Storage – If storing > 1 month, charge to 50-60%
Temperature – Avoid charging in extreme temperatures
Lifespan – Battery typically lasts 300-500 charge cycles
Replacement – Contact service center for battery replacement

Calibration

For best accuracy, calibration should be performed:

Every 12 months
After repair
If measurements seem inaccurate
Contact authorized service center for professional calibration

Cleaning

Do:

Use soft, lint-free cloth
Use mild detergent solution for stubborn stains
Dry thoroughly before use

Don’t:

Use solvents, alcohol, or abrasive cleaners
Spray liquids directly on device
Submerge in water
Use high-pressure air

CONTACT INFORMATION

Manufacturer: FNIRSI

Customer Support:

Visit official website for latest drivers and firmware
Email support for technical questions
Online forum for user community

Service Centers:

Check website for authorized service centers in your region
Keep purchase receipt for warranty service

🛡️ WARRANTY INFORMATION

Standard Warranty

Duration: 12 months from date of purchase

Coverage: Manufacturing defects in materials and workmanship

What’s Covered:

Defective components
Manufacturing defects
Normal operation failures

What’s NOT Covered:

Damage from misuse or abuse
Unauthorized modifications
Damage from incorrect input voltages
Normal wear and tear (e.g., probe tips)
Cosmetic damage
Battery degradation (normal aging)
Liquid damage
Dropped or impact damage

Warranty Claim Process

Contact customer support
Provide proof of purchase
Describe problem in detail
Follow return instructions if repair needed
Authorized service center will evaluate
Repair or replace under warranty terms

Extended Support

Firmware updates: Free for life
Technical support: Available online
Replacement parts: Available for purchase
User community: Active forum and resources

APPENDIX A: ACCESSORIES LIST

Standard Package Contents

✓ FNIRSI 2D15P main unit (1 pc) ✓ 100MHz oscilloscope probe with 1×/10× switch (2 pcs) ✓ Multimeter test leads – Red/Black pair (1 set) ✓ Type-C charging cable (1 pc) ✓ User manual (this document) ✓ Carrying pouch (1 pc) ✓ Quick start guide ✓ Calibration certificate

Optional Accessories (Sold Separately)

High-voltage probe (100×, 1000×)
Current probe / clamp meter
Differential probe
Logic analyzer probes
Temperature probe (K-type thermocouple)
Protective hard case
Spare probes and test leads
Automotive probe kit

SPECIFICATIONS SUMMARY

Category	Specification
Oscilloscope
Bandwidth	100 MHz (dual channel)
Sampling Rate	1 GSa/s
Channels	2 analog channels
Vertical Resolution	8-bit ADC
Vertical Sensitivity	5 mV/div to 10 V/div
Vertical Accuracy	±3%
Input Impedance	1 MΩ // 15 pF
Max Input Voltage	400 Vpk (DC + AC peak)
Time Base Range	2 ns/div to 50 s/div
Trigger Types	Edge, Pulse, Video, Slope
Display Mode	Phosphor persistence
Multimeter
Display Count	6000 counts
DC Voltage	600mV to 1000V (±0.5%)
AC Voltage (True RMS)	600mV to 1000V (±1.0%)
DC Current	60mA to 10A (±1.0%)
AC Current (True RMS)	60mA to 10A (±1.5%)
Resistance	600Ω to 60MΩ (±1.0%)
Capacitance	10nF to 100mF (±3.0%)
Frequency	10Hz to 10MHz
Duty Cycle	0.1% to 99.9%
General
Display	3.5″ IPS color LCD
Battery	5000mAh Li-ion
Battery Life	Up to 6 hours
Charging	Type-C, 5V/2A
Dimensions	Compact handheld (30% smaller)
Weight	~400g
Operating Temp	0°C to 40°C
Storage Temp	-20°C to 60°C

IMPORTANT NOTES

First Use: Fully charge the device before first use
Probe Attenuation: Always match probe switch position (1×/10×) with oscilloscope setting
High Voltage: Never exceed 400V on oscilloscope inputs or 1000V on multimeter
Current Measurement: Use 10A terminal for currents > 600mA, limit measurement time
Capacitor Testing: Always discharge capacitors before measuring
Firmware Updates: Check website periodically for firmware updates
Data Backup: Save important waveforms before they are overwritten
Environmental: Do not use in wet, explosive, or extremely dusty environments

Document Version: English Edition v1.2
Based on: FNIRSI 2D15P Official Manual

This manual has been carefully adapted for English-speaking users with improved clarity and organization while maintaining all original technical information and safety warnings.