FNIRSI-1013D Oscilloscope User Manual - FNIRSI Oscilloscopes Store in UK

Product Overview

The FNIRSI-1013D is a full-featured, highly practical, and cost-effective dual-channel touchscreen oscilloscope designed for maintenance professionals and R&D engineers. This portable instrument combines professional performance with intuitive touchscreen operation for maximum convenience.

Key Specifications

Sampling Rate: 1 GSa/s (1 Gigasample per second)
Analog Bandwidth: 100 MHz × 2 channels
Display: 7-inch capacitive touchscreen with 800 × 480 resolution
Operation Method: Touch + gesture control
Trigger Modes: Single, Normal, and Automatic
Signal Compatibility: Both periodic analog and aperiodic digital signals
Storage Capacity: 1 GB internal storage
- Up to 1000 screenshot images
- Up to 1000 waveform data sets
Battery: Built-in 6000mAh rechargeable lithium battery
Battery Life: Up to 4 hours on full charge
Charging: Can be used while charging (like a laptop)

Major Features

Oscilloscope Functions:

Complete trigger functionality for both periodic analog and aperiodic digital signals
High-voltage protection module (tolerates up to 400V continuous voltage)
Large time-base scrolling mode for monitoring slow signal changes
One-button AUTO function for instant waveform optimization
Intuitive capacitive touchscreen with gesture operation
Cursor measurement for direct amplitude and frequency readings
Lissajous pattern display for comparing amplitude, frequency, and phase
FFT (Fast Fourier Transform) viewing for harmonic component analysis

Touchscreen Interface:

Intuitive touch and swipe gestures
No complex menu navigation required
Direct waveform manipulation with fingers
Pinch to zoom, swipe to scroll
Single-tap controls for all functions

Data Management:

Quick screenshot and waveform storage (one-touch operation)
Powerful waveform picture manager with thumbnail browsing
Functions include viewing, page navigation, deletion, zoom, and pan
USB interface for computer connectivity and file sharing

Portable Design:

Built-in rechargeable 6000mAh battery
4-hour continuous operation on full charge
Use while charging capability
Lightweight and compact for field work

Order your 1013D today – 2-day UK delivery, 60-day easy returns

Check the review for 1013D

Probe Bandwidth Limitations

1× probe bandwidth: 5 MHz
10× probe bandwidth: 100 MHz

When measuring frequencies above 5 MHz:

Move the switch on the probe handle to 10×
Set the oscilloscope to 10× mode

Why this is necessary: Oscilloscope probe cables have a capacitance of 100-300 pF, which significantly attenuates high-frequency signals. At 1× setting, the effective bandwidth is only 5 MHz. The 10× attenuation provides impedance matching with the probe cable capacitance, enabling the full 100 MHz bandwidth. Use only probes rated for 100 MHz or higher.

Screen Interface and Touch Controls

Display Elements

Menu Button Icon – Opens function menu with system settings, saved screenshots, waveforms, and USB mode
Run/Pause Indicator – Shows current operating state
Channel 1 Position Area – All parameters in this area relate to Channel 1; tap to open CH1 control bar
Channel 1 Probe Magnification – 1×, 10×, or 100× settings
Channel 2 Position Area – All parameters in this area relate to Channel 2; tap to open CH2 control bar
Channel 2 Probe Magnification – 1×, 10×, or 100× settings
System Time Base – Time duration per horizontal grid division (determined by sampling rate)
Movement Speed – Shows [Move coarse adjustment] for fast movement or [Move fine adjustment] for slow movement
Trigger Indication – All trigger-related parameters; tap to open trigger control bar
Trigger Channel – CH1 or CH2 selection
Battery Indicator – Green blocks show remaining power
Control Bar Function Switch – Switches between 2 types of button bars
Run/Pause Button – Tap to switch between running and paused states
Auto Adjustment Button – Automatically identifies signal and optimizes display parameters
Time Cursor Switch – Turns cursor measurement on/off
Voltage Cursor Switch – Turns voltage cursor measurement on/off
Measurement Parameter Selection – Opens parameter selection bar
Screenshot Button – Captures entire screen and saves automatically
Waveform Save Button – Saves all channel waveform data
Channel 2 Baseline Arrow – Indicates 0V position
Channel 2 Waveform Data – Cyan waveform
Channel 1 Baseline Arrow – Indicates 0V position
Channel 1 Waveform Data – Yellow waveform
Channel 1 Input Coupling – DC or AC coupling indicator
Channel 1 Vertical Sensitivity – Voltage per vertical grid division
Channel 2 Input Coupling – DC or AC coupling indicator
Channel 2 Vertical Sensitivity – Voltage per vertical grid division

Trigger X Position Arrow – Indicates trigger point location
Trigger Mode Indicator – Auto, Single, or Normal trigger mode
Trigger Edge Indicator – ↑ rising edge, ↓ falling edge
CH1 Vertical Sensitivity Increase (+) – Zoom in vertically (stretch)
CH1 Vertical Sensitivity Decrease (-) – Zoom out vertically (compress)
Trigger Voltage Icon – Trigger threshold indicator
CH2 Vertical Sensitivity Increase (+) – Zoom in vertically (stretch)
CH2 Vertical Sensitivity Decrease (-) – Zoom out vertically (compress)
50% Trigger Button – Sets trigger voltage to middle of waveform amplitude

Note: Cannot be used for PWM waveforms with dead time; set trigger arrows to waveform edges for these signals

Touch Gesture Controls

Touch Zones

System Function Menu Area – Tap to open system function and settings menu
Channel 1 Control Bar Area – Tap to open CH1 parameter control bar
Channel 2 Control Bar Area – Tap to open CH2 parameter control bar
Movement Speed Button Area – Tap to switch between fast and slow movement
Trigger Control Bar Area – Tap to open trigger parameter control bar
Trigger Voltage Button Area – Press and slide up/down to adjust trigger voltage
Time Base Decrease Area (Right of grid centerline) – Zoom in horizontally (stretch waveform)
Time Base Increase Area (Left of grid centerline) – Zoom out horizontally (compress waveform)
Channel 2 Baseline Button Area – Press and slide up/down to adjust CH2 baseline; or tap waveform directly to move
Channel 1 Baseline Button Area – Press and slide up/down to adjust CH1 baseline; or tap waveform directly to move

Gesture Operations

Waveform Movement:

Tap and drag waveform – Move waveform in any direction
Tap baseline arrows – Vertical movement of individual channels
Swipe left/right – Horizontal waveform scrolling

Zoom Operations:

Tap right half of display – Zoom in horizontally (reduce time base)
Tap left half of display – Zoom out horizontally (increase time base)
Use [V+] and [V-] buttons – Vertical zoom (after pressing [CTRL])

Trigger Adjustment:

Tap and drag green arrow – Adjust trigger voltage level
Quick positioning – Tap location where you want trigger line

Operation Instructions

Channel Management

Turn Channel 1 or Channel 2 On/Off:

Tap the yellow CH1 or CH2 control bar area in upper-left corner
Channel parameter control bar appears
In the [Open CH1] or [Open CH2] row:
- Tap [ON] to enable the channel
- Tap [OFF] to close the channel

Turn FFT On/Off:

Tap the yellow CH1 or CH2 control bar area
Channel parameter control bar appears
In the [Open FFT] row:
- Tap [ON] to enable FFT for this channel
- Tap [OFF] to close FFT

Set Input Coupling Mode:

Tap the yellow CH1 or CH2 control bar area
Channel parameter control bar appears
In the [Coupling] row:
- Tap [DC] for DC coupling
- Tap [AC] for AC coupling

Set Probe Input Magnification:

Tap the yellow CH1 or CH2 control bar area
Channel parameter control bar appears
In the [Probe Mode] row:
- Tap [1×] for 1× input magnification
- Tap [10×] for 10× input magnification
- Tap [100×] for 100× input magnification

Waveform Adjustment

Enlarge Waveform:

Horizontal: Tap the right half of waveform display area
Vertical: Tap [CTRL] button, then tap [V+] to zoom in

Reduce Waveform:

Horizontal: Tap the left half of waveform display area
Vertical: Tap [CTRL] button, then tap [V-] to zoom out

Move Waveform:

Tap the waveform curve or waveform area, then drag to move in any direction

Adjust Trigger Voltage:

Tap the green arrow area on the right side of display
Drag up or down to adjust trigger voltage level

FNIRSI 1013D Oscilloscope User Manual 2 1

Trigger Settings

Set Trigger Edge:

Tap the green T control bar area in upper-left corner
Trigger parameter control bar appears
In the [Trig Mode] row:
- Tap [Rising] for rising edge trigger
- Tap [Falling] for falling edge trigger

Set Automatic Trigger:

Tap the green T control bar area
In the [Trig Mode] row:
- Tap [Auto] for automatic trigger

Set Single Trigger:

Tap the green T control bar area
In the [Trig Mode] row:
- Tap [Single] for single-shot trigger

Set Normal Trigger:

Tap the green T control bar area
In the [Trig Mode] row:
- Tap [Normal] for normal trigger

Display Control

Pause/Resume Display:

Tap [RUN/STOP] button in rightmost button bar
If button not visible, press [CTRL] to switch button bars

Automatic Waveform Adjustment:

Tap [AUTOSET] button in rightmost button bar
System automatically optimizes display parameters based on signal
If button not visible, press [CTRL] to switch button bars

Slow Scan Scrolling Mode:

Tap the left half of waveform display area repeatedly
Time base increases with each tap
When time base reaches 100 ms, system enters slow scan scroll mode
Range: 100 ms to 50 seconds

Cursor Measurements

Time Cursor Measurement:

Tap [TIME CURSOR] button in rightmost button bar
Manually measure time differences and equivalent frequency
If button not visible, press [CTRL] to switch button bars

Voltage Cursor Measurement:

Tap [V CURSOR] button in rightmost button bar
Manually measure voltage levels
If button not visible, press [CTRL] to switch button bars

Set Display Parameters:

Tap [MEASURS] button in rightmost button bar
Parameter control bar opens
Tap desired parameters in selection bar to display them
If button not visible, press [CTRL] to switch button bars

Data Capture and Storage

Save Current Screen Display:

Tap [SAVE PIC] button in rightmost button bar
Screenshot captured and automatically saved to internal storage
If button not visible, press [CTRL] to switch button bars

Save Current Waveform Data:

Tap [SAVE WAVE] button in rightmost button bar
All open channel waveform data saved to internal storage
If button not visible, press [CTRL] to switch button bars

View Saved Screenshots:

Tap [MENU] button in upper-left corner
4 function control bars appear
Tap second option [Picture View]
Thumbnail preview interface opens showing all screenshots
Tap thumbnail to view full-screen
Tap bottom of screen to show control bar with:
- Return – Exit viewer
- Delete – Remove image
- Previous – Previous image
- Next – Next image
Can also tap [Select All] or [Select] in preview to delete multiple

View Saved Waveform Data:

Tap [MENU] button in upper-left corner
Tap third option [Waveform View]
Thumbnail preview interface opens with saved waveforms
Tap thumbnail to analyze waveform in full-screen
Can move and zoom waveforms
Can use cursor measurement
Can click parameter control panel to select different parameters
[Page Up] – Previous waveform
[Page Down] – Next waveform

Delete Saved Waveform:

In full-screen waveform view, tap [Delete Wave] button in rightmost button bar
If button not visible, press [CTRL] to switch button bars

Take Screenshot in Waveform Browser:

In full-screen waveform view, tap [SAVE PIC] button
Screenshot captured and saved automatically
If button not visible, press [CTRL] to switch button bars

Connect to Computer:

Tap [MENU] button in upper-left corner
Tap fourth option [USB Connection]
USB transmission interface opens
Connect standard Android USB data cable to computer
Computer will show removable disk
Find saved screenshots in the disk
Important: Do not rename files directly on disk, or oscilloscope picture manager cannot display them

System Settings

Adjust Screen Brightness:

Tap [MENU] button in upper-left corner
4 function control bars appear
Tap first option [System Settings]
5 setting control bars appear
Tap [Screen Brightness]
Adjust brightness (0 = darkest, 100 = brightest)

Adjust Background Grid Brightness:

Tap [MENU] button in upper-left corner
Tap [System Settings]
Tap [Grid Brightness]
Adjust grid brightness (0 = grid off, 100 = brightest)

Set Always Trigger Automatically at 50%:

Tap [MENU] button in upper-left corner
Tap [System Settings]
Tap [Always Trigger 50%]
When turned on (green), system automatically sets trigger voltage to 50% of peak voltage in auto trigger mode

Baseline Calibration: Perform when baseline arrow and horizontal baseline don’t align:

Unplug all probes
Unplug USB charging power
Tap [MENU] button
Tap [System Settings]
Tap [Baseline Calibration]
Tap [OK] to perform calibration

Troubleshooting Guide

Q1: Device won’t turn on after receiving it?

Solution:

Battery may be depleted after factory testing
Connect USB charger for 30 minutes before turning on
Do not use computer USB – insufficient power (use original 5V/2A charger)
If still not working after charging, contact customer service

Q2: No waveform displayed, only a stationary line on screen?

Solution:

Check if paused – tap [RUN/STOP] to resume
Press [AUTOSET] button once
If still no waveform:
- Verify signal source is outputting
- Check probe for short circuit or open circuit with multimeter
- Test probe and signal source independently

Q3: Voltage measurement shows 0?

Solution:

Adjust vertical sensitivity and time base
Or press [AUTOSET] button
Display should show at least one clear, complete waveform cycle
Top and bottom of waveform must be visible (not clipped)
Voltage reading will be accurate once properly displayed

Q4: Frequency measurement shows 0?

Solution:

Ensure trigger mode is set to Auto
Press [AUTOSET] button once
Display should show at least one clear, complete waveform cycle
Waveform must be triggered (green arrow fixed, not shaking)
Frequency reading accurate once waveform properly triggered

Q5: Duty cycle shows 0?

Solution:

Ensure trigger mode is set to Auto
Adjust trigger line to intersect waveform
When waveform properly triggered (fixed position), duty cycle reading will be correct
At least one complete waveform cycle must be visible

Q6: AC coupling looks the same as DC coupling?

Explanation:

For symmetrical AC signals (like signal generator output), AC and DC coupling appear identical
For asymmetrical AC or DC pulsating signals, waveform shifts vertically when switching coupling modes

Q7: Waveform jumps up and down continuously, multiple overlapping lines?

Solution:

Set trigger mode to Auto
Press [AUTOSET] button
If not resolved:
- Probe ground clip may not be connected
- Probe end may have open circuit
- Check probe with multimeter

Q8: Waveform shakes horizontally and won’t stabilize?

Solution:

Adjust trigger voltage (green arrow on right)
Press and hold green trigger arrow, move up/down
Position trigger indicator between top and bottom of waveform
Or enable “Auto 50%” in settings menu

Q9: Cannot capture sudden pulses or digital logic signals?

Solution:

Change trigger mode to “Normal” or “Single”
Adjust trigger voltage, time base, and vertical sensitivity
Wait for signal, then tap [RUN/STOP] to pause

Q10: Measuring battery shows no waveform?

Explanation:

Battery voltage is stable DC signal with no curve
In DC coupling mode, adjust vertical sensitivity to see offset straight line
In AC coupling mode, DC signals blocked – no waveform appears

Q11: Battery won’t fully charge?

Solution:

May be using laptop USB or charger below 2A
Laptop USB output too low to fully charge
Replace with original 5V/2A charger

Q12: 220V 50Hz measurement causes display to lag?

Explanation:

To display 50 Hz signals, oscilloscope must use very low sampling rate
This causes slow display update, appearing as “lag”
Normal behavior for ALL oscilloscopes measuring 50Hz – not a defect

Q13: Measuring 220V shows peak-to-peak over 600V, not 220V or 310V?

Explanation:

220V is the RMS (effective) value, not peak-to-peak
Household 220V AC is symmetrical:
- Positive peak: +310V
- Negative peak: -310V
- Peak-to-peak (Vpp) = 620V
Tap [Parameter Display] to open control bar and enable “Effective Value” to see 220V
Actual household voltage fluctuates 180-260V RMS (507-733V peak-to-peak)

Q14: Measured 220V not perfect sine wave – shows distortion?

Explanation:

Municipal power grids contain harmonic pollution
Higher-order harmonics superimpose on sine wave, causing distortion
This is normal and reflects actual power quality – not oscilloscope problem

Q15: Baseline (0V) and left arrow misaligned with no signal?

Solution:

Unplug all probes
Unplug USB charging power
Tap [MENU] → [System Settings] → [Baseline Calibration]
Tap [OK] to calibrate

Q16: Signals above 5MHz show significant attenuation?

Solution:

When measuring 5 MHz or higher:
1. Move probe switch to 10×
2. Set oscilloscope to 10× input mode
Why: Probe cable has 100-300 pF capacitance
At 1× setting, effective bandwidth only 5 MHz
10× setting provides impedance matching, enables full 100 MHz bandwidth
Only use probes rated 100 MHz or higher

Q17: Green charging indicator stays on when device is powered on?

Explanation:

Green indicator means charger supplying power
When device powered on, charger continues supplying power to system
Check battery icon in upper-right corner
When battery icon fully green, battery is fully charged

Common Test Scenarios

1. Battery or DC Voltage Measurement

Probe Setting:

Battery voltage typically below 40V: Use 1×
DC voltage above 40V: Use 10× (both probe and oscilloscope)

Procedure:

Set oscilloscope to Auto trigger mode (default at power-on)
Set probe multiplier to 1× (or appropriate setting)
Set coupling mode to DC
Insert probe and move switch to corresponding position
Ensure battery/DC source is powered
Connect probe clip to negative terminal, probe tip to positive
Press [AUTOSET] once
Read “Average” parameter for DC voltage value

Note: DC signals appear as horizontal line with offset, not curve. Peak-to-peak and frequency read 0.

2. Crystal Oscillator Measurement

Probe Setting: 10× (both probe and oscilloscope)
Reason: Crystals stop oscillating when encountering capacitance. 1× probe has 100-300 pF, 10× has only 10-30 pF.

Procedure:

Set oscilloscope to Auto trigger mode
Set probe multiplier to 10×
Set coupling mode to AC
Move probe switch to 10×
Ensure crystal board powered and running
Connect probe clip to ground (power negative)
Remove probe cap to expose needle tip
Touch needle to crystal oscillator pin
Press [AUTOSET] to display waveform
Press [CTRL], then use [V+] and [V-] to adjust if needed

3. PWM Signal (MOS/IGBT Drive) Measurement

Probe Setting: 1× (both probe and oscilloscope)
Reason: PWM signals typically 3-20V, within 40V maximum of 1× range

Procedure:

Set oscilloscope to Auto trigger mode
Set probe multiplier to 1×
Set coupling mode to DC
Move probe switch to 1×
Ensure PWM board outputting signal
Connect probe clip to MOS/IGBT Source (S) pin
Connect probe tip to Gate (G) pin
Press [AUTOSET] to display PWM waveform
Press [CTRL], use [V+] and [V-] to adjust if needed

4. Signal Generator Output Measurement

Probe Setting: 1× (both probe and oscilloscope)
Reason: Signal generator output typically within 30V

Procedure:

Set oscilloscope to Auto trigger mode
Set probe multiplier to 1×
Set coupling mode to DC
Move probe switch to 1×
Ensure signal generator on and outputting
Connect probe clip to generator black (ground) lead
Connect probe tip to generator red (signal) lead
Press [AUTOSET] to display waveform

5. Household AC Power (220V/110V) Measurement

Probe Setting: 100× (requires separate 100× probe – not included)
Reason:

Household power: 180-260V RMS = 507-733V peak-to-peak
1× maximum: 40V
10× maximum: 400V
100× maximum: 4000V

Procedure:

Purchase 100× probe separately
Set oscilloscope to Auto trigger mode
Set probe multiplier to 100×
Set coupling mode to AC
Move probe switch to 100×
Ensure AC power outlet active
Connect probe clip and tip to both AC wires (polarity doesn’t matter)
Press [AUTOSET] to display waveform

⚠️ WARNING: Standard 10× probe CANNOT safely measure household AC!

6. Power Supply Ripple Measurement

Probe Setting:

Output below 40V: 1×
Output 40-400V: 10×

Procedure:

Set oscilloscope to Auto trigger mode
Set probe multiplier to appropriate gear
Set coupling mode to AC (critical for ripple)
Move probe switch to corresponding position
Ensure power supply on and outputting
Connect probe clip to negative output
Connect probe tip to positive output
Wait ~3 seconds until yellow line aligns with left arrow
Press [AUTOSET] to display ripple

Note: AC coupling essential – blocks DC, shows only ripple.

7. Inverter Output Measurement

Probe Setting: 100× (requires separate purchase)
Reason: Inverter output similar to household AC, peak-to-peak above 500V

Procedure:

Set oscilloscope to Auto trigger mode
Set probe multiplier to 100×
Set coupling mode to DC
Move probe switch to 100×
Ensure inverter powered and outputting
Connect probe clip and tip to inverter output (polarity doesn’t matter)
Press [AUTOSET] to display waveform

8. Audio/Power Amplifier Signal Measurement

Probe Setting: 1× (both probe and oscilloscope)
Reason: Amplifier output typically below 40V

Procedure:

Set oscilloscope to Auto trigger mode
Set probe multiplier to 1×
Set coupling mode to AC
Move probe switch to 1×
Ensure amplifier on and outputting audio
Connect probe clip and tip to amplifier output (polarity doesn’t matter)
Press [AUTOSET] to display waveform

9. Vehicle Communication/Bus Signal Measurement

Probe Setting: 1× (both probe and oscilloscope)
Reason: Automotive communication signals typically below 20V

Procedure:

Set oscilloscope to Normal trigger mode (NOT Auto)
Reason: Communication signals are non-periodic digital
Set probe multiplier to 1×
Set coupling mode to AC
Move probe switch to 1×
Connect probe clip and tip to two communication signal lines (polarity doesn’t matter)
Ensure communication actively occurring
Adjust vertical sensitivity to 50 mV
Adjust time base to 20 μs
Press [50% TRIG] once
Oscilloscope captures and displays signal when communication occurs
If no capture, try adjusting time base (1 ms to 100 ns) and trigger voltage

10. Infrared Remote Control Receiver Measurement

Probe Setting: 1× (both probe and oscilloscope)
Reason: IR signals typically 3-5V

Procedure:

Set oscilloscope to Normal trigger mode
Reason: IR signals are non-periodic digital coded
Set probe multiplier to 1×
Set coupling mode to DC
Move probe switch to 1×
Connect probe clip to IR receiver ground (negative)
Connect probe tip to IR receiver data pin
Adjust vertical sensitivity to 500 mV
Adjust time base to 20 μs
Adjust trigger red arrow to approximately 1 grid distance from left yellow arrow
Press button on IR remote control
Waveform appears on oscilloscope

11. Sensor Amplifier Circuit Measurement

(Temperature, Humidity, Pressure, Hall Effect, etc.)

Probe Setting: 1× (both probe and oscilloscope)

Important: Sensor raw signals very weak (millivolts) – cannot measure directly. Must locate amplifier output on sensor board.

Procedure:

Set oscilloscope to Auto trigger mode
Set probe multiplier to 1×
Set coupling mode to DC
Move probe switch to 1×
Connect probe clip to sensor board ground (power negative)
Locate amplifier output pin, connect probe tip
Adjust vertical sensitivity to 50 mV
Adjust time base to 500 ms (enters slow scan mode)
Move baseline to bottom of screen
If signal appears at top, reduce vertical sensitivity (try 100 mV, 200 mV, 500 mV)
Optimal: signal traces in middle of screen (not clipped)
Observe slow changes as sensor responds

Specifications Summary

Feature	Specification
Channels	2 (independent)
Bandwidth	100 MHz per channel
Sampling Rate	1 GSa/s
Input Voltage Range	0-40V (1× mode)
Maximum Input	400V continuous (with protection)
Display	7″ capacitive touchscreen, 800 × 480
Operation	Touch + gesture control
Time Base Range	2 ns/div to 50 s/div
Trigger Modes	Auto, Normal, Single
Trigger Types	Edge (Rising/Falling)
Coupling	AC, DC
Storage	1 GB (1000 screenshots + 1000 waveforms)
Battery	6000mAh rechargeable lithium
Battery Life	4 hours continuous operation
Charging	Use while charging capability
Interface	USB (file sharing)
Power	Rechargeable battery + USB charging

Maintenance and Care

Charge with original 5V/2A charger – Do not use laptop USB or low-current chargers
Never exceed 400V input voltage
Store in cool, dry environment
Clean touchscreen with soft, lint-free cloth – No solvents or abrasives
Protect probes from physical damage
Perform baseline calibration periodically
Fully discharge/recharge battery monthly to maintain capacity
Safely eject USB drive before disconnecting from computer