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ARM Cortex M3 2.8 TFT LCD 1 Single-channel DSO301 Pocket Oscilloscope

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ARM Cortex M3 2.8 TFT LCD 1 Single-channel DSO301 Pocket Oscilloscope

ARM Cortex M3 2.8 TFT LCD 1 Single-channel DSO301 Pocket Oscilloscope

Price: $80.57
SKU: 96925
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Description

ARM Cortex M3 2.8 TFT LCD 1 Single-channel DSO301 Pocket Oscilloscope

Features:


1. Processor:32 bit ARM Cortex M3 kernel CPU
2. LCD screen:2.8 inch TFTLCD
3. Resolution:320*240
4. Number of channels:1 channels
5. Input impedance:>1M Europe
6. The reference waveform output:10HZ ~ 1MHZ
7. The measurement bandwidth:0 ~ 4MHZ
8. The maximum sampling rate:50MS/s
9. The storage depth:4K byte
10. Maximum input voltage:40V ( x1 probe ), 400V ( X10 probe )
11. Trigger type:rising edge, falling edge trigger trigger
12. Scan mode:automatic scan, plain scan, single scan and random scanning
13. Measurement parameters:voltage deviation, time difference, frequency of signal, signal cycle, signal duty ratio, AC peak-to-peak value, effective value, average value of AC and DC average value
14. Waveform storage capacity:4M
15. Waveform storage quantity:temporary limit 256
16. Power supply:built-in rechargeable lithium battery 3.7V, can also use the power supply for the USB 5V

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Reviews
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  Special Purpose Instrument
Posted by allen land on 05/31/2014, 05:20
Involvement:Expert (understands the inner workings) - Ownership:more than 1 month
Price: **
Ease of Use: **
Build Quality: ****
Usefulness: ***
Overall Rating: ***
Pros:Good resolution for it's size
Bright display
some trigger display capability but trigger point is not marked
Cons:Sweeps slower than 100 ms/sec defective (firmware v3.2)
most sensitive voltage range .1v/div is noisy
linear interpolation makes fast signals look ragged
Has DC offset that must be adjusted each time it is turned on
no AC input
Needs preamp/signal conditioner
No pan or zoom
Other Thoughts:Max sampling rate 20.6 MSa/Sec not 50
Usefulness and overall ratings are meaningless. Judge for your self.
Bottomline:Worth considering if you need a very small instrument
  Descdription is incorrect
Posted by Wayne Robey on 04/22/2014, 10:54
Involvement:Expert (understands the inner workings) - Ownership:1 week to 1 month
Price: ***
Ease of Use: **
Build Quality: ****
Usefulness: ***
Overall Rating: ***
Pros:Small yet moderate resolution
The signal connector is MCX.
Cons:Actual sampling rate is 20.8 MSa/S not 50
Amplifier bandwidth does not match sampling rate so there is a lot of aliasing. There is also some overshoot.
Input resistance is 542K on the 1V/div scale, making it incompatible with the usual X10 probe (which assumes 1 meg ohm)
The actual signal area on the screen is 299 X 199, each division has 25 pixels. Once a waveform is there, it cannot be altered to show more time samples or more voltage range so the record length is 299 not the stated 4096.
Other Thoughts:This scope is also sold under the name DSO504, though the boot screen says DSO301.
Most sensitive scale of .1V/div is noisy.
Bottomline:I would consider this more of a component for an instrument than a stand alone instrument.

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