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ADS-4102 Handheld Digital Oscilloscope

Handheld digital oscilloscope. Dual channel. Bandwidth: 100MHz; Max. Sample rate: 1GSa/s (500MSa/s each channel); Max. Memory Depth: 2Mpts; Waveform math: +, -, ×, /, FFT; Trigger types: Edge, Video, Pulse, Slope, Alternate; 32 types Automatic measurement; Rise Time: ≤3.5ns; Time Base Range: 2.5ns/div50s/div; Scan Range: 100ms/div50s/div; Vertical Sensitivity: 2mV/div100V/div (1-2-5 step); Vertical Resolution: 8bits; Frequency Counter: 6bits; Oscilloscope Trend Plot: 800kpts; Multimeter Trend Plot: 1.2Mpts; Recorder: 7Mpts. Built-in Frequency Counter. Built-in Multimeter: measurement voltage (AC, DC), current (AC, DC), resistance, capacitance, diode test, continuity test. 5.7 color TFT LCD display; USB device, USB host, Power Supply: 100...240VAC, battery; Dimensions: 10.2x6.4x2.1in/259.5x163.2x53.3mm; Weight: 3.3lb/1.5kg.

User's Manual (3.69 Mb)

AKTAKOM ADS-4102 is a high performance handheld oscilloscope with great range of dynamic input scope. It has small volume which convenient to carry, compact interface and etc. It satisfies the most needs of outside measurement and improves working efficiency greatly.


  • Dual-input, combine oscilloscope, Multimeter and recorder (including TrendPlot and waveform Recorder) in one unit
  • Input voltage: input voltage through BNC is up to CATII 300V and CATⅢ 150V
    Standard probe: 10X CATII 400V
    Optional probe: 10X CATII 1000V and 10X CATIII 600V
    Oscilloscope and multimeter safety grade is up to CATII 600V and CATIII 300V
  • 5.7 inch TFT color LCD display
  • 100MHz Bandwidth, 1GSa/s real-time sampling rate single channel, up to 50GSa/s equivalent sampling rate, 2Mpts memory depth
  • With 6000 dots display resolution Multimeter and provides measurements of DCV, ACV, DCI, ACI, Resistance, Diode, Capacitance and Continuity
  • Support Scope TrendPlot, Meter TrendPlot and Scope Recorder
  • Trigger modes: Automatic, Normal and Single
    Trigger types: Edge, Pulse, Video, Slope and Alternative
  • 32 automatic measurements, 3 cursor measure modes
  • 4 digital filter mode: Low pass, High pass, Band pass, Band limit
  • Math functions: +, - , ×, ÷, FFT operations
  • Multiple Language User Interface
  • Standard configuration interface: USB Device, USB Host
  • Support USB storage and update; support PC remote control and PictBridge print
  • Rechargeable Li battery pack, compact, portable, fit for outdoor operation

Oscilloscope Specifications:

Inputs System
Input Coupling AC, DC, GND
Input Impedance 1MΩ2% || 18pf3pf
Probe Attenuator 1X, 10X
Voltage Probe Attenuator Factors 1X, 5X, 10X, 50X, 100X, 500X, 1000X
Current Probe Attenuator Factors 1X, 5X, 10X, 50X, 100X, 500X, 1000X
BNC Maximal Input Voltages
(refer to BNC crust)
Overvoltage Classes
CAT II 300Vrms
CAT III 150Vrms
Probe Overvoltage Classes Maximal Voltages
Standard Probe 10X CAT II 400Vrms
Optional Probe 10X CAT III 600Vrms
Multimeter Floating Voltages Overvoltage Classes Maximal Voltages
CAT II 600Vrms
CAT III 300Vrms
Channel Common Mode Rejection >100:1 50MHz
Isolation Degree between Channels >35dB
Acquisition System
Sample Types Real time, Equivalent time
Memory Depth Single Channel 32k, double channels 16K
Channel Mode Sampling Rat Common Storage Deep Storage
Single Channel 1Gsa/s 40kpts Dont support
Single Channel 500MSa/s or below 20kpts 2Mpts
Double Channels 500MSa/s or below 20kpts 1Mpts
Sample Mode Sample, Peak Measure, Average
Averages 4, 16, 32, 64, 128, 256
Vertical System
Vertical Sensitivity 2mV/div100V/div (1-2-5 order)
Channel Voltage Offset Rang 2mV200mV: 1.6V
206mV10V: 40V
10.2V100V: 400V
Vertical Resolution 8 bit
Channels 2
Single-shot Bandwidth 100MHz
Lower Frequency Limit (AC -3dB) ≤10Hz (BNC input)
DC Gain Accuracy 5mV/div-100V/div:≤3% 2mV/div:≤4%
DC Measurement Accuracy: All Gain settings ≤200mV/div [3%X (|reading|+|offset|)+1% of |offset| +0.2div+2mV]
DC Measurement Accuracy: All Gain Settings >200mV/div [3%X (reading|+|offset|)+1% of |offset| +0.2div+100mV]
Rise Time (BNC value) <3.5ns
Math Operation +, -, *, /, FFT
FFT Window Modes: Hanning, Hamming, Blackman, Rectangular
Sampling points: 1024
Bandwidth Limiter 20MHz (-3dB)
Horizontal System
Real Time Sampling Rate Single channel below 50ns/div: 1GSa/s; double channel: 500MSa/s
Equivalent Sampling Rate < 50GSa/s
Measure Display Modes MAIN, WINDOW, WINDOW ZOOM, SCAN, X-Y
Time Base Accuracy 50ppm measured over 1ms interval
Horizontal Scan Range

Scan: 100ms/div50s/div (1-2.5-5 order)

Trigger System
Trigger Types Edge, Pulse Width, Video, Slope, Alternative
Trigger Source CH1, CH2
Trigger Modes Auto, normal, Single
Trigger Coupling AC, DC, LF reject, HF reject
Trigger Level Range CH1, CH2: 6 divisions from the center of the screen
Trigger Displacement Pre-trigger: (Memory depth/(2*sampling)), Delay Trigger: 260 div
Holdoff Range 100ns1.5s
Edge Trigger Edge type: Rising, Falling, Rising and Falling
Pulse Width Trigger Trigger Modes: (>,<,=) Positive Pulse Width, (>,<,=) Negative Pulse Width
Pulse Width Range: 20ns10s
Video Trigger Support Signal Formats: PAL/SECAM, NTSC
Trigger Conditions: odd field, even field, all lines, pointed line
Slope Trigger (>,<,=) Positive slope, (>,<,=) Negative slope
Time: 20ns10s
Alternative Trigger CH1 trigger types: Edge, Pulse, Video, Slope
CH2 trigger type: Edge, Pulse, Video, Slope
X-Y Mode
X-pole Input / Y-pole Input Channel 1 (CH1) / Channel 2 (CH2)
Phase Move 3 degrees
Sampling Frequency Support 25kSa/s250Msa/s sampling rate (1-2.5-5 order)
Measure System
Auto Measure (32 types) Vpp, Vmax, Vmin, Vamp, Vtop, Vbase, Vavg, Mean,Crms, Vrms, ROVShoot, FOVShoot, RPREShoot, FPREShoot, Rise, Fall, Freq, Prd, +Wid, -Wid, +Dut, -Dut, BWid, Phas, FRR, FRF, FFR, FFF, LRR, LRF, LFR, LFF
Cursor Measure Manual mode, Track mode and Auto mode
Control Panel Function
Auto Set Auto adjusts the vertical, horizontal system and trigger position
Save/Recall Support 2 groups of referenced Waveforms, 20 groups of setups, 10 groups of captured waveforms internal storage/recall functions and USB flash driver storage function.
Hard Ware Frequency Counter
Reading resolution 6 Bytes
Range DC coupling, 10Hz to maximal bandwidth
Signal Types Its to all trigger signals (Except pulse width and video trigger)

Digital Multimeter Specifications:

Max. Display 6000
Measure Function DC voltage, AC voltage, resistance, diode, continuity, capacitance, DC current, AC current
Max. Input Voltage AC (virtual value): 750V (AC Frequency: 20Hz1kHz) DC: 1000V
Max. Input Current AC (virtual value): 10A (AC Frequency: 20Hz1kHz) DC: 10A
Input Impedance 10M
DC Voltage
60mV 10μV (1%+15digit)
600mV 100μV (1%+5digit)
6V 1mV
60V 10mV
600V 100mV
1000V 1V
AC Voltage
60mV 10μV (1%+15digit)
600mV 100μV (1%+5digit)
6V 1mV
60V 10mV
600V 100mV
750V 1V
600Ω 0.1Ω (1%+5digit)
60kΩ 10Ω
600kΩ 100Ω
60MΩ 10kΩ
Diode and Continuity Measure
Name Range
Diode 02V
Continuity <50Ω alarm
40nF 10pF (3%+10digit) measurements >5nF
400nF 100pF (4%+5digit)
4μF 1nF
40μF 10nF
400μF 100nF
DC Current
60mA 10μA (1%+5digit)
600mA 100μA
6A 1mA (1.5%+5digit)
10A 10mA
AC Current
60mA 10μA (1%+5digit)
600mA 100μA
6A 1mA (1.5%+5digit)
10A 10mA

Recorder Specifications:

Scope Trend Plot
Display Mode full view and normal
Record Length 800kpts,>24 hours
Record Channel Num. 2
Cursor and Zoom support
Record Manual support
Multimeter Trend Plot
Display Mode full view and normal
Record Length 1.6Mdots, >24 hours
Record Channel Number 1
Cursor and Zoom Support
Record Manual Support

Generic Specification:

Display System
Display Mode Color TFT 5.7 inches (145mm) diagonal Liquid Crystal Display
Resolution TFT 5.7 inches: 320 (horizontal) pixels * 234 (vertical) pixels
Display Color 64K color
Display Contrast (typical) 150:1
Backlight Intensity (typical) 300 nit
Waveform Display Range TFT 5.7in 8x12div & 8x18div
Wave Display Mode Dots, Vectors
Persist Off, 1 sec, 2 sec, 5 sec, Infinite
Menu Display 2 sec, 5 sec, 10 sec, 20 sec, Infinite
Screen-Saver Off, 1 min, 2 min, 5 min, 10 min, 15 min, 30 min, 1 hour, 2 hour, 5 hour
Skin Classical, Modern, Traditional, Succinct
Waveform Interpolation Sin(x)/x, Linear
Color model Normal, Invert
Language Simplified Chinese, Traditional Chinese, English, Arabic, French, German, Russian, Spanish, Portuguese, Japanese, Korean, Italian
Adapter Supply Power Input Voltage 100-240V 50/60Hz
Output Voltage 9V 4A
Battery Supply Power 5000mAh, 7.4VDC, persisting 5 hours
Charging time About 4 hours
Temperature Work: 040C
Storage: -20C70C
Cooling Natural Cool
Humidity 85%RH, 40C
Height 3000m
Dimension Length 259.5mm / 10.2in
Width 163.2mm / 6.4in
Height 53.3mm / 2.1in
Weight 1.5kg / 3.3lb

Standard Accessories:

  • Two Passive Probes
  • Test leads
  • USB data cable
  • Power cord
  • Manual
  • CD

    Optional Accessories:

  • Car-Charger

Frequently Asked Questions

  • After the oscilloscope is powered on the display remains dark, what should I do?
  • There is wave form displayed, but it is not stable
  • When changing the horizontal sweep on the digital oscilloscope at different horizontal points observed inexplicable change in the form of the same signal, why is this happening?

  • After the oscilloscope is powered on the display remains dark, what should I do?

    Please implement the following fault treatment procedure.

    • Check whether the power cable is connected properly.
    • Ensure the power switch is turned on.
    • Restart the instrument after completing the checks above.
    • If the oscilloscope still can not work normally, please call for service.


    There is wave form displayed, but it is not stable
    • Check whether the Source item in the TRIG MODE menu is in conformity with the signal channel used in the practical application.
    • Check on the trigger Type item: The common signal chooses the Edge trigger mode for Type and the video signal the Video. Only if a proper trigger mode is applied, the wave form can be displayed steadily.
    • Try to change the trigger coupling into the high frequency suppress and the low frequency suppress to smooth the high frequency or low frequency noise triggered by the interference.


    When changing the horizontal sweep on the digital oscilloscope at different horizontal points observed inexplicable change in the form of the same signal, why is this happening?

    In fact, this is not a problem.

    Just keep in mind that you're using a digital oscilloscope, which digitizes the signal with different sampling rates depending on the selected horizontal sweep, and then connects the digitized points with strait line while restoring the real shape of the signal.

    Your first screen shows that you are measuring voltage 50 Hz with the 10 ms / div sweep and a sampling frequency of 20 kHz Ks/s

    One signal period (20 ms), digitized in this mode, 20E-03 (sec) * 20E03 (1/sec) = 400 points. This is enough to properly restore and interpolate a sine wave of 50 Hz (i.e. in a period of 20 ms).

    Normal display, with a sweep 10 ms / div:

    Distortion of the same signal at 10 s / div sweep

    Your second screen is set to sweep 10 sec / div, and sample rate on a sweep turned to 20 samples per second (20 Sa / s). I.e. one signal period 20 ms had: 20E-03 (sec) * 20 (1/sec) = 0.4 points. That means that to restore (to interpolate the points) a sine wave with less than one point in time is impossible, so you get this mess (known as "aliasing" or a false frequency) formed by the beats of the measured frequency and sampling frequency.

    In order to correctly install a data collection in a digital oscilloscope one should follow a simple rule - the sampling rate must be at least 5-10 times higher than the frequency signal, in that case you will not have the issues that we just discussed.

    This applies to all digital oscilloscopes and in no way connected to any particular make or model of oscilloscope or its probes.


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