Welcome to the forum!
Any thoughts about the quality of the scope? At first glance it looks like a competitor of the Rigol DS1052E. I will take a more in depth look at this scope and compare it to the Rigol.
Interesting fuse on the PSU board. I wonder what its current rating is..
Interesting fuse on the PSU board. I wonder what its current rating is..
Is there another fuse, e.g. at the mains inlet?
(...)the board is a universal board for CAL and CML model - so with additional SRAM chip and (probably) different firmware you can "update it" to CML model.
(...)the programming matters (FPGA, CPLD, DSP), there are billions of way to win or screw up the DSO design.
btw, there is one important difference between Rigol and ATTEN CAL/CML - ATTEN doen NOT use EEPROM connected
to DSP, so potential hack by replacing the whole firmware could be much easier .. of course if you get somewhere
ATTEN firmware (CML or higher bw CAL models)
Thanks for taking the tear downs, it'll take a while to study the pics. I noticed the name Siglent on the PCB, a brand Atten tried to push but it seemed to go nowhere; Atten doesn't bother erase the chip markings, making it easier to identify.
What means the symbol on picture 14.jpg between the CE and the crossed recycle bin?
One of the things I wanted to know, were the references of ADCs, but no luck, they removed it
Probably they are using slow rated ADCs...
Probably in CML board the IC footprint right of FPGA is populated.
probably, not that AD9288-100 costs much more than the -40, but you if a manufacturer (like Rigol or ATTEN)
save money but cutting (or actually not installing) proper shielding between PSU and main PCB then you
can assume that the ADCs are cheap once too.
Is there another fuse, e.g. at the mains inlet?Yes, you must have some powers
About USB, the lsusb give me this:
ID f4ec:ee38 Atten Electronics / Siglent Technologies Digital Storage Oscilloscope
As expected no suport for Linux.
Here are some images of the PC software (EasyScope 3.0) running in Linux under Wine, and some captures from scope.
hehe who need Linux
There are some Blackfin dev board having same USB chip, look for isp1362bd. There are also some Linux drivers,
i think with some trick it will work for you.
Can you do a full lsusb -v and show the output? I would be interested in in seeing if they use a known USB class / sub class. This enhances the chance to get a kernel driver for it. And even if there isn't a kernel driver, if they use a standardized class you can get the documentation from usb.org, which opens the way for an own driver (typical in user space, which isn't too difficult to do).
$ lsusb -v -d f4ec:ee38
Bus 005 Device 002: ID f4ec:ee38 Atten Electronics / Siglent Technologies Digital Storage Oscilloscope
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0xf4ec Atten Electronics / Siglent Technologies
idProduct 0xee38 Digital Storage Oscilloscope
bcdDevice 1.00
iManufacturer 1 Siglent TechCo., Ltd.
iProduct 2 USB Digital Oscilloscope
iSerial 0
bNumConfigurations 1
If you get the USB running in Linux under Wine you are almost golden. Then you can easily connect Wireshark to the USB interface and trace the communication, which allows to re-engineer the protocol they use.
If you only get USB running under Windows, then USB sniffing is a little bit problematic. The free sniffers like Snoopy Pro are rather bad and tend to fail, and the commercials aren't much better (but more expensive).
Woah did they provide you with that international mains plug adapter? Doesn't have earth and is one of those non polarized plugs. So you can plug it in with the adapter and the chassis can be live? Hope you're just using a proper IEC cable