DSO Quad specification finalized, with double bandwidth
Price and schedule will remains the same, but we over-clocked AD9288-40 to enable 72Mhz usage. Please don’t tell Analog Devices I told you this…
Final Specifications
| Analog channel * 2 | [CH_A] [CH_B] |
| Digital channel * 2 | [CH_C] [CH_D] |
| Vertical Scale | 20mV-10V/div (1-2-5 step) on x1 probe / 200mV -100V/div (1-2-5 step) on x10 probe |
| Vertical resolution | 8 bit |
| Input coupling | AC/DC |
| Max input voltage | 80Vpp (x1 probe) / 400Vpp (x10 probe) |
| Storage | 4K per channel / 8K on single channel |
| Software trigger type | edge, pulse, level (to be added) |
| Hardware trigger type | edge |
| Trigger source | CH1/CH2/EXT |
| Trigger mode | Auto, Normal, Single, SCAN, None |
| Test Signal generater | 10Hz to 8Mhz 2.8Vpp Square Wave, duty circle 10~90% adjustable / 10Hz to 20Khz 2.8Vpp Sin, Square, Saw, Triangle wave |
| Storage | internal 2MB USB disk, BMP, DAT file |
| Auto measure | Vmax, Vmin, Vpp, Vavr, Vrms, Freq, Period, Pulse, Duty |
| Cursor measurement | Level, Voltage |
| Display mode | CH1, CH2, EXT, CH1+CH2, CH1-CH2, CH1*CH2 |
| Sampling mode | real time |
| Sampling rate | 30S/s – 72MS/s |
| Power | Lipo battery |
| Dimension | 98 * 60 * 14.5 (mm) |
| Weight | 80g (without battery) |
| Accesories within Pack | 2 mcx osilloscope probe, 2 mcx digital probe |
About Author
It looks pretty cool. Any idea on battery life and how long it takes to charge?
They are in assembly now, should be ready within next week. We will ship as soon as possible. Thanks for your patience!
I’ll second the request. Any news on delivery times?
Any news on delivery times?
David
@ jnd
– 1x probe by default.
– We are trying to get bigger ones.
Let’s prepare the rest when vacation is over.Thanks!
@JerryInAtlanta
The firmware would be open source, feel free to add new features.
The USB connection is configured as mass storage, need to look into it later.
We are keep looking for bigger onboard flash, 2MB small but OK for most usages.
@Odroider
The FPGA is not decided yet, we will release the scheme and PCB file when everything is finalized.
One other question, Is the on board 2MB usb flash truly onboard or is it socketed? Can we expand it to a larger chip if we want to?
The overclocking is great news, as is the second digital probe.
I too am also curious if the digital probes will be bi-directional. I suspect not, but it would be cool if it had some logic analyzer protocols supported. Asking too much? Maybe. But it would be cool.
The scope has minimal flash onboard for data capture; will the usb connection be usable for data capture? I got the impression from one of the threads that this may be true. Just need confirmation.
This is a really promising project.
Can I ask which FPGA do you use?
I want to add some special trigger features.
Thanks,
If the overclocking works, no problem. I guess there will be only slightly less effective bits for vertical resolution, which given the size of display should be OK. Rigol did (and maybe still does) the same. So it looks like the scope will be good to measure up to 10 MHz signal. Can you provide any test screenshots at that speed (sine,square)?
I have couple of questions:
– Do you include both 1x and 10x probes, or are they switchable? What is the battery life? I wouldn’t mind having larger capacity with longer runtime.
– Are the digital channels and signal generator both input and output or just one way? The latter would be great for serial interface monitoring/debugging/controlling stuff…
– And last will there be option for larger serial flash (USB disk), at least 4 MB, the price difference is small, they are really cheap (esp. the SST/Microchip) and would improve the scope greatly. Of course MicroSD would be even better but it’s not there.
Overall it looks great, this product has a lot of potential. Once you release the source and user app tutorial it will be selling in thousands 🙂
Thanks for this hackable scope, looking forward to my beta order.
Will the changes be in the pre-order batch? I noticed that you’ve increased the number of digital probes from 1 to 2, will this come with the pre-order batch?
I want one! I really wish I could afford one right now.