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DSO138 Digital Oscilloscope
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DSO138 Digital Oscilloscope

- Multi Oscilloscope DIY Kit

    COD This product supports COD on delivery. Suggestions: Do not place orders with non-COD products, otherwise you will not be able to choose COD payment method.
    Ship between: Oct 25 - Oct 27, Estimated Shipping Time: business days Order Processing Time may require a few days. Once dispatched from warehouse, Shipping (or Delivery) Time depends on the Shipping Method.
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This DSO138 digital oscilloscope kit adopts ARM Cortex-M3 processor and with 2.4-inch TFT screen.
It's easy and reliable for circuit operation. It can display frequency, period, pulse width, duty ratio, max. / min. / avg. / peak-peak / virtual values.

• This kit uses ARM Cortex-M3 processor, and includes a 2.4-inch color TFT display screen, can be used as ARM test development board
• With automatic, regular and one-shot modes, easy to capture the moment waveform
• Can be secondary developed to millivoltmeter, data loggers
• Adjustable vertical displacement, and with instructions
• Available rising or falling edge trigger
• Observable previous trigger waveform (negative delay)
• Can freeze at any time waveform display (HOLD function)
• Comes 1Hz / 3.3V square wave test signal source
• Waveform storage: not lose the waveform after power off
• Short-circuit and open-circuit detection: can help the user find out the soldering error
• TFT controller recognition function

- Maximum real-time sampling rate: 1Msps
- Accuracy: 12bit
- Sampling buffer depth: 1024bytes
- Analog bandwidth: 0 - 200KHz
- Vertical sensitivity: 10mV / Div - 5V
- Input Impedance: 1 megohm
- Maximum input voltage: 50Vpp ( 1: 1 probe ), 400Vpp ( 10: 1 probe)
- Coupling modes: DC / AC / GND
- The horizontal time base range: 10μs / Div - 50s


Dimensions and Weight

Product weight: 0.1300 kg
Package weight: 0.1320 kg

Package Contents

Package Contents: 1 x Digital Oscilloscope
DSO138 Digital Oscilloscope Fully Welded SMD Components - Multi Oscilloscope DIY Kit
DSO138 Digital Oscilloscope Fully Welded SMD Components - Multi Oscilloscope DIY Kit
DSO138 Digital Oscilloscope Fully Welded SMD Components - Multi Oscilloscope DIY Kit
DSO138 Digital Oscilloscope Fully Welded SMD Components - Multi Oscilloscope DIY Kit

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Customer Reviews

4.61 out of 5
  • 47
  • 15
  • 2
  • 1
  • 1
See all 66 reviews Write a Review
  • Suvarna
    Yes (2) Color: Multi Size: Oscilloscope DIY Kit
    digital oscilloscope .
    I should gearbest for their delivery very fast and shipping good. The product is very very good at it's specifications and usefulness.
    But for the completeness missed the outer acrylic casing (shell) which is as shown on the product page which is not supplied with the product as mentioned a finished product.
    No doubt the product is completely soldered and assembled and is without the 12 volt dc adapter which one will require to power up .
    Even then it is worth more than it's price !!!
    I would appreciate if gearbest or Seller had supplied the outer protective acrylic casing it would have been wonderful !!! Without the cover it is always prone to external and accidental damage.
    I hope my review would help others and gearbest as well .

    Nov 19,2018

  • TommyLee
    Yes (0) Color: Multi Size: Oscilloscope DIY Kit
    Oscilloscopio Portatile a prezzo da saldi
    Sono passati svariati anni da quando mi sono interessato all'acquisto di un oscilloscopio da banco di media qualità e quando ho visto i costi ho rinunciato all'acquisto anche perché il mio era un uso saltuario dello strumento. Quando ho visto il DSO138 mi sono detto: a questo prezzo posso pure rischiare di comprare qualcosa che non funzioni come vorrei, ma lo voglio provare. E' arrivato dopo tre settimane, ma non avevo fretta di usarlo. Dopo averlo acceso e tarato ho visto che funzionava bene e il fatto che era a singolo canale non era un grosso problema. Ho anche acquistato un contenitore in plexiglass per usarlo con più comodità, ma l'intenzione è di realizzarne uno su misura con la stampante 3D. Insomma sono soddisfatto dell'acquisto. Penso di farmi un piccolo laboratorio elettronico amatoriale

    Jan 25,2019

  • Taras Sh.
    Yes (0) Color: Multi Size: Oscilloscope DIY Kit
    DSO138 Digital Oscilloscope
    When i bought it - i select "finished product" but, when i receive a package - i find in the box - DIY Kit for handmade assembly.
    I hope - it's not a big problem to finish it, I'm worried only that after assembly it - it must work correctly.
    Only for this situation i rate it 4 stars, not 5.

    Jul 04,2019

  • Sergey
    Yes (0) Color: Multi Size: Digital Oscilloscope Kit
    Хорошая "игрушка"
    Учитывая тот факт, что я знал про все недостатки данного осциллографа еще до заказа, то жаловаться не на что.

    А так набор пришел весь ничего добавлять не пришлось. Запустился с первого раза. Проблем при сборке не было. Фоток сборки не сделал так что прикладываю, что получилось в итоге.

    Feb 27,2019

  • kheno
    Yes (0) Color: Multi Size: Oscilloscope DIY Kit
    Great product for the value!!
    The oscilloscope is fast and efficient. Easy to operate with many features and small size. I suggest you come in an acrylic box for him, but it's sold separately on the site itself. A great product worth charging, besides being a pretty piece. Super recommend it to everyone, especially to anyone who is learning.

    Jan 08,2019


    Thank you for your time.

    Any issue please kindly feel free to contact our support center, we are always here to provide the solutions for you.

    Please kindly review our warranty policy here:

    Many thanks!

    Best regards,

    Mar 22,2019

FAQ for DSO138 Digital Oscilloscope

  • What is the maximum voltage that can be measured?

    Maximum input voltage: 50Vpp (1:1 probe), 400Vpp (10:1 probe).
  • What power connector does it use?

    9V, 1A power adapter.
  • Does DSO138 Digital Oscilloscope have been assembled?

    The cover isn't assembled, the host is assembled.
  • Can the display be output to a laptop ?

    No, it can't.

Customer Questions

  • All(5)
  • Product Information(5)
  • Stock Status
  • Payment
  • About Shipping
  • Others

What is the frequency response?

By Tony Jan-11/2019 17:58:16

Hello Tony, Thanks for your inquiry.The frequency response is 200KHZ.

Can the display be output to a laptop (or digital monitor)?

By Glyn Nov-25/2018 12:54:02

Hello Glyn, No ,I am sincerely sorry that it can not .

This is a power adapter, not an oscilloscope. Is this the 9V adapter that I would want to power a DSO150 Handheld Digital DIY Oscilloscope Set ?

By Philip Roberts Nov-20/2018 12:44:40

Hello Philip,This power adapter can be used with the DSO150.


By DIMARZIO GOMES Oct-19/2018 19:39:56

Hello DIMARZIO,No, sorry.Package Contents: 1 x Digital Oscilloscope    

Can you inform me what is including in the finished product? (acrylic case, probes, power supply)

By Kasapis Athanasios Oct-17/2018 21:46:23

Hello Kasapis, Package Contents: 1 x Digital Oscillosco    

5 Questions & Answers View All

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Item processing time
After receiving your order,we require some time to test the product to ensure its quality.The exact processing time varies depending on the item.The average processing time is 3 working days.but this can also be affected by the item's stock status. For small quantity orders,the processing time is 1-3days while larger quantity orders may require 2-5days.
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Shipping Type Country or Region Arrive within 1-7 Days Arrive within 8-15 Days Arrive within 16-30 Days Arrive within 31-45 Days Average Time (Days)
Unregistered Air Mail or Registered Air Mail United States 0.52% 44.87% 49.88% 3.5% 18.13
Spain, United Kingdom, Italy, Germany, France & Portugal 5.18% 43.44% 48.34% 1.17% 15
Netherlands, Greece, Poland, Hungary, Slovakia, Czech Republic 2.96% 40.34% 52.54% 3.74% 18.66
Russia 0% 4.45% 84.41% 11.1% 28
Japan, Korea 0% 21.30% 68.80% 9.66% 17.75
Brazil 0% 0% 23.91% 72.09% 38.6
Turkey 0% 37.75% 59.05% 3.1% 20.33
Thailand, Singapore & Malaysia 0% 40.39% 56.12% 2.6% 16.2
Other countries 0.7% 38.79% 47.94% 8.56% 23.57
Priority Line United States 12.28% 79.05% 7.4% 0.52% 11.75
Spain, United Kingdom, Italy, Germany, France & Portugal 8.44% 66.56% 23.45% 0.45% 13.55
Russia 0% 3.48% 75.79% 20.04% 31
Brazil 2.21% 6% 61.29% 25.46% 30
Turkey 20.42% 77% 3% 0.08% 10
Australia 7.67% 86.60% 5.68% 0% 11
Korea 97.54% 1.57% 0.89% 0% 7
Japan 95.80% 2.09% 0% 0% 6.84
Thailand, Singapore & Malaysia 58.96% 41.04% 0% 0% 8.45
Other countries 22.33% 30.8% 27.62% 17.64% 18.65
Expedited Shipping ALL countries(EMS) 3.8% 46.8% 26% 15% 14.8
ALL countries(DHL) 65.8% 25.75% 3.86% 0.37% 6.72
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ES Warehouse: Generally, 2-5 days to the Spain, 3-7 days to the Portugal.
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Note: This is a general guide and delays maybe caused force majeure, natural disasters, inclement weather, war, public holidays, and factors outside our control. Generally speaking, we offer free shipping for DSO138 Digital Oscilloscope to United States (US, USA), United Kingdom (UK, GB), Germany, Italy, France, Spain, Portugal, Poland, Brazil, Russia, Japan, Greece, Austria, Hungary, Slovakia, Czech Republic, Ireland, Lithuania, Israel, Denmark, Norway, Sweden, Canada, Australia, Netherlands, Korea, Turkey, Mexico, Ukraine, Romania, Columbia, Thailand, Singapore, Malaysia etc. Please choose the shipping methods for the final price.

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Do you want to bulk buy ? Please submit your wholesale inquiry below. Please note we usually don’t offer free shipping on wholesale orders, but the wholesale price will be a big bargain.

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