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1) Kindly note 9V power supply included.
2) Pls use power supply adapter to give enough voltage to the device, or it cannot power on it or screen flickering, the adapter need "+" inside, " -" outside ( Center is Positive pole, Outside is negative pole )
3）Carton package
Pls contact us if need support from us. We will reply within 24hours, replace a new product or give you fully refund if you wish. thank you!
This is fully assembled DSO Shell oscilloscope, upgraded product of DSO138. With new design and it offers more accurate and reliable measurements. 5mV/div sensitivity and low background noise make the device particularly useful for measuring weak signals. Come with a very detailed instructions and a probe to get you started easily. Require 9V DC power supply with 5.5mm (2.1mm center) jack and included here.
Features and specifications:
Maximum real-time sampling rate: 1 MSa/s
Analog bandwidth: 0 - 200 KHz
Sensitivity range: 5 – 20 mV/div
Maximum input voltage: 50 Vpk (1X probe)
Input impedance: 1M ohms/20pF
Accuracy: 12 bits
Record length: 1024 points
Coupling modes: DC / AC / GND
Time Base Range: 500s/Div – 10us / Div
Trigger modes: Auto, normal, and single
Trigger position: Center of buffer
Supply voltage: DC 9 V (8 – 10 V)
Current consumption: ~120 mA @ 9 V
Main board size: 94 x 65 mm (3.7 x 2.56 in)
Analog board size: 65 x 47 mm (2.56 x 1.85 in)
Screen size: 52 x 40 mm (2 x 1.57 in)
Package size: 14.5 x 10 x 3.7 cm (5.7 x 3.94 x 1.45 in)
Package weight: 179 grams (6.33 oz)
Package include:
1 x Fully Assembled Digital Oscilloscope
1 x User Manual (English)
1 x BNC Clip Probe
craignelson7007
Reviewed in the United States on March 22, 2024
I bought this because I wanted to verify the signal coming off my camshaft position sensor on my jeep and didn't want to spend > $100 on a tool I would seldom use. Spoiler alert, I haven't used it for much else but it absolutely worked for my purposes and I'm quite happy with it.The instructions were probably not written by a native english speaker and were hard to follow/quasi-contradictory in some places, and didn't really explain what the calibration steps were doing. I have a degree in physics so I've used this sort of equipment before, and fell back on the basics to calibrate it against a known 5V source. From there I was able to use it for what I wanted, but I would expect that a lot of people would just get frustrated & give up.
Goldenhawk
Reviewed in the United States on December 2, 2024
Had 0 hope for what this product could do, but to my surprise, it worked as expected for my pet projects. Don’t expect it to do what expensive equipment can provide but if you want a handy device and your error margin is okay, this is a great product. In fact this may be a great gift to any Stem inclined teenagers!Good investment.
Sheba
Reviewed in the United States on January 10, 2024
It works well I think it’s great for adults and kids trying to learn electrical engineering.
Nick
Reviewed in the United States on April 24, 2024
Pretty good for the price, you get what you pay for. Gets the job done but very inconvenient that it needs to be plugged in to an outlet to work.
Braden Sluiter
Reviewed in the United States on October 21, 2023
Came without a power supply. Cannot be used with 120V. No instructions. Just a scope in a bag and a single lead. No way to turn it in. For $40? I think not.
Norm church
Reviewed in the United States on May 15, 2022
It functioned s described, it arrived early, easy to learn.I would have preferred option to purchase power adapter when I bought it.I had to wire 9v adapter to use it right away.
arkieguy
Reviewed in the United States on June 10, 2020
Ok, so I didn't do my due diligence on this and it didn't do what I needed - my fault. I am trying to do some debugging on ESP32 / NeoPixel (WS2812B) leds and 200Khz just won't cut it (it's 800 khz). So, I ended up buying a 5Mhz rechargeable for only a few dollars more. Make double sure your frequency isn't higher than 200khz (most things are) before buying this scope.
Stew
Reviewed in the United States on December 17, 2019
I knew that I did not want to spend time assembling this scope when I received it. I wanted to hook it up and use it immediately, so I ordered this one that came fully assembled. Not only that, but it came with a 9 volt power supply that is needed to operate it. Also supplied is a 10:1 probe as well as the 1:1 probe with clip leads. It works great for what I need at this time.I have noticed two minor problems: When I change the triggering settings when I am looking at a waveform, the scope sometimes locks up. This seems to be a software problem. Turning the scope off and then on restores normal operation. The other problem is with the included 10:1 probe. There is an adjustment capacitor at the BNC connector that is adjusted to view the scope's internal waveform generator into a perfect square wave when it is set for 10X. I am not able to make the leading edge of the square wave high enough. Normally, the adjustment will go from too low to too high and is set to show a perfect square wave. Not being able to bring the leading edge high enough will manifest itself as high frequency roll-off when I am taking measurements. I am not sure whether it is the probe, or if the scope's input impedance is causing the problem. I will have to borrow another scope probe to find out. When the probe is set for 1X, the waveform is a perfect square wave as it should be.As far as portability goes, this oscilloscope cannot be beat because it will fit into a shirt pocket. Being a retired electronics engineer/technician, it is just what I needed for general troubleshooting up to 200KHz.Update: I have discovered that the firmware in the scope is very old and needs to be updated. I am going to contact the seller to see if I can get the new firmware file.
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