- USB2.0 interface, no external power source, similar interface with bench oscilloscopes, easy to use
- More suitable for notebook computer, product line maintenance, be used easily on business
- Small size (mm): 200 (L) x100 (W) x35 (H), easy to carry
- High refresh rate, high sampling rate, 48 MS/s real-time sampling
- Software support: Windows 7, Windows NT, Windows 2000, Windows XP, VISTA
Hantek HT6022BE20Mhz 6022be PC Based USB Digital Storage Oscilloscope, 20 MHz Bandwidth
|Price:||$70.99 & FREE Shipping|
Specifications for this item
|UPC||608641998610 , 799872692023 , 750408651389 , 887662202511 , 787461660201 , 700220341036 , 519085155715|
|EAN||6123554614371 , 0700220341036 , 0887662202511 , 0787461660201 , 0799872692023 , 0608641998610 , 6136797647020 , 6955170834341 , 0519085155715 , 0750408651389|
|Number of Items||1|
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Extremely Durable Anodized Aluminum Case Features one USB 2.0 port and the Standard USBXITM interface, No Extra Power Cord Needed, Works with a Laptop or Desktop, Compact size, easy to carry, Supported Windows OS: Windows 2000/NT/XP/VISTA/Windows 7, FFT Saves Waveform on screen in TXT, JPG/BMP, MS Excel/Word formats, Saved waveform files can be sent as email attachments, Channel: 2 Channels Bandwidth: 20MHzShot bandwidth: DC to 20MHzInput Impendence: 1Mohm 25pFMax. Sample rate: 48MS/vertical resolution: 8BitGain range: 20mV-5V, 8StepsDC accuracy: ±3%Time base range: 1ns-9000s, 39 Steps Vertical adjustable: Yes Input protection: Diode clamping-Y: Yes Trigger Mode: Auto, Normal and Single Trigger Slope: +/-Trigger level adjustable: Yes Trigger Type: Rising edge, falling edge Trigger Source: CH1, CH2Pre/Post trigger: 0-100%Sampling selection: Yes Waveform Display: port/line, waveform average, persistence, intensity Network: Open/Close Vertical mode: CH1, CH2, Dual, ADD Cursor measurement: Yes Math: FFT, addition, subtraction, multiplication, division. Cursor: Frequency, Voltage Package Contents:1 x PC BASED USB DIGITAL STORAGE OSCILLOSCOPE1 x S/W and Driver CD2 x Clip Probes1 x User Manual On the CD1 x USB cord Please Note: CD and probe are in the invisible layer of the packaging box. Please check the box if you can't find the CD and the probe.
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The free version of HScope shows one channel and a stable, triggered waveform down to 30 Hz. The paid-for version ($5 plus change) shows 2 channels, a stable, triggered waveform down to 15 Hz and frequency measurement (also FFT on channel 1 only). The HScope interface is clean and intuitive. I found triggering to be stable on all waveforms (sine, square and sawtooth) down to 15 Hz on both channels, upslope or downslope.
Although the scope itself has several limitations, the low price and portability are significant advantages. For automobile diagnostics, the lower frequencies are more important than the upper. A 900 rpm idle corresponds to a frequency of 15 Hz, which is right at the lower, usable end of this scope because the HScope software's trigger doesn't work below 15 Hz (30 Hz in the free version). Two switchable 1X/10X probes are included, but the scope's maximum input voltage is 35V (AC or DC) so you have to be a little careful, but not too much. If you exceed this input voltage it's not clear whether you'd blow up the scope, your phone, or both. Probe ground is also USB ground, which could be a problem on a PC powered off the mains, but should be fine when powered off a smart phone that is solely providing the power. The included USB connector also includes a USB power port (red) so the phone and oscilloscope setup could be powered off an external charger, although these are 2 pin and should, therefore, also be isolated from mains ground. However, if the USB power adapter is connected to a cigarette lighter adapter, probe ground is the same as the car's (engine) ground so the probe ground must also be connected to engine ground. The input is only DC coupled (meaning you can't look at a small AC signal riding on top of a large DC signal), but this isn't a problem for automobile diagnostics. There's no facility in the HScope software to offset the 2 channels vertically, i.e., by voltage, although in practice they appear to be offset slightly (where they should both be zero, channel 1 reads 0.02 V and channel 2 reads 0.127V). One channel is depicted in yellow and the other in green. The software offers the ability to see the actual measured data points (as dots in the trace).
I was surprised that the 'scope is so large (relatively speaking). It's significantly larger than my smart phone, but still a lot more compact than my bench 'scope. A minor gripe is that the channel 1 BNC connector is so close to the edge of scope that it's a little difficult to attach and detach the probe. Ditto the calibration connectors.
Just for the heck of it I tried to install the supplied software on my Windows 10 laptop, but it didn't work. I then went to Hantek's web site and downloaded their latest software. Much to my surprise this software installed without any bother and it even works quite well, trigger and everything. There do seem to be a few quirks, however. I can't see where the trigger is synchronized to, even though it works. Also, once the trigger mode has been switched to "single" the trace is forever frozen until you close and restart the software, i.e., switching the trigger mode back to "auto" doesn't restart the scan. The Windows software isn't terrible, though. It's not as bad as other reviews would have you believe, but I still like being able to use the scope on my Android smart phone instead of on my laptop.
Overall, this unit does what it's supposed to do. My old CRT scope (which is in poor shape) no longer shows linear changes accurately. Digital is digital but analog needs to be more accurate. That is why I bought the Hantek 6022. Low price and functionality. And I'm not done experiencing it to its fullest potential. I've only operated it for one evening and already I can tell you there's at least one feature I wish it had.
Nevertheless, I expect this unit to be fairly well suited for most applications.
The triggering is poor. It's hard to get a waveform positioned exactly right on the screen.
There is no AC coupling. DC only.
The scope is NOT isolated from USB ground, which on a computer is typically connected to the ground on the wall plug. You cannot connect the ground clip of a probe to (say) line voltage to take a reading. You'll need to either use an isolation transformer, or a laptop running on batteries (not plugged in) to do this sort of thing without blowing something up.
There is no mention in the specs, but it seems that actual input voltage to the scope is limited to 5 volts. This is not surprising, since the USB voltage is 5 volts. So if you use the included 10:1 probe to measure something that is (say) 75 volts, it will read as 50 volts. If you want to measure between 50 to 500 volts, you need a 100:1 probe, not included.
There trace buffer is deep, but the only way to scroll is to drag one screen at a time. This is a software issue, possibly they will add a scroll bar in some future version. There is no equivalent of a "delayed sweep" like on HP scopes, that can magnify a particular portion of a trace. You can stop a trace and magnify the data, but may have to drag through hundreds to screens to get to the part you want.
The software only works on Windows XP and later. It does not load on Windows 2000. If you have Windows 7 or later, you need to go to the Hantek site to get drivers that are not on the included CD. There is OpenHantek software that runs on linux, but it does not support the 6022BE at this time (2013).
Do not expect any support from the manufacturer. Their site is very sparse with English help.
And some positive surprises:
The two included probes are switchable between 1:1 and 10:1, and decent.
I thought the 20 MHz was marketing hype, and was prepared for a 2 MHz scope, but was actually able to observe ringing at about 20 MHz.
It's surprisingly easy to export the screen as either a bitmap file, or comma separated value data file.
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