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Is this oscilloscope a great deal? 250Mhz 4 channel for $~550?
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SimSama:
Its probably obvious but I'm a noob looking to buy my first scope. I've watched Dave's vids on scopes for entry level, and see him recommending mostly 50Mhz 4 channel scopes. I noticed this one at 250Mhz / 4 channel for relatively cheap.
Can anyone pick this apart or confirm it is a good deal?
4 Channels Hantek DSO4254B Digital Oscilloscope,1GS/s Sample Rate 250MHz LCD Desktop Oscilloscope
Model: DSO4254B
Bandwidth: 250MHz
Sample Rate Range: 1GS/s
Record Length: Maximum 64K samples per single-channel; Maximum 32K samples per dual-channel (4K, 32K optional)
SEC/DIV Range: 2ns/div~100s/div; 1, 2, 5 sequence
AD Converter: 8-bit resolution, each channel sampled simultaneously
Position Range: 500μV/div~20mV/div, ±400mV; 50mV/div~200mV/div, ±2V; 500mV/div~2V/div, ±40V; 5V/div~10V/div, ±50V
Rise Time at BNC, typical: <1.4ns
DC Gain Accuracy: ±3% for Normal or Average acquisition mode, 10V/div to 10mV/div; ±4% for Normal or Average acquisition mode, 5mV/div to 500μV/div
Acquisition Modes: Normal, Peak Detect, Average and HR
Link to scope:
https://www.amazon.com/Channels-Hantek-DSO4254B-Digital-Oscilloscope/dp/B0914VF19Z
pcprogrammer:
For that money you can get better scopes from Rigol, Siglent or GW-Instek.
jonpaul:
Tektronix 2465B 350 MHz 4 ch 2467B 400 MHz ~ $300..500
Jon
Fungus:
Not a good deal.
250MHz sounds impressive but 1GS/sec isn't enough to sample 4 channels correctly (it breaks the Nyquist limit). 1Gs/sec is really only enough for 100MHz@4 channels.
64k samples is also pathetic. Most entry level 'scopes measure samples in tens of megabytes these days.
--- Quote from: SimSama on November 28, 2022, 06:11:39 am ---Its probably obvious but I'm a noob looking to buy my first scope. I've watched Dave's vids on scopes for entry level, and see him recommending mostly 50Mhz 4 channel scopes.
--- End quote ---
Those 'scopes can be unlocked to 100Mhz or more for free.
100Mhz is plenty for a beginner 'scope. Once you go much above that you start to have big problems with probing. Even at 200Mhz you can't simply poke your probe at a component and expect to see a good signal.
2N3055:
For less than 500$ you can get a 4 channel scope that has 2x1GS/s (it has 2 ADC) and will go to 200Mhz for real. And is also more advanced and better product.
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