| Products > Test Equipment |
| Hantek HDG2002B AWG: 5Mhz or 100MHz? Let's see! |
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| Howardlong:
--- Quote from: Simon on October 25, 2015, 09:00:08 am ---Well I've ordered a 20MHz variant and yes I begin to suspect that the reaon it has 16bit DAC is that it uses the resolution to generate low voltage signals too, rather than have a viariable output. My only other option would be one of those really cheap and nasty generators that have a very poor user interface (we have one at work because it's all they would buy of course). --- End quote --- From memory of the calibration process, it has ISTR three voltage ranges. |
| Berni:
It does switch in some voltage ranges with a relay inside so not really a problem there, but the relay and the signal going in to the DAC are not all that much in sync. This means that as you cross the relay click boundary one way you may get an output that briefly drops to a very small amplitude before going to the new voltage level, but what is much worse is when you cross it the other way you get a much bigger signal than set for a short moment before it jumps back down to what you set it to. So careful if it is connected to something sensitive. I am already considering getting one of those Siglent 2000X because i learned that i simply can't trust that the unit is outputting what the front panel is claiming it is. If you can look past the bugs it is still a good signal gen for the money and might be a good choice for a hobbyist. But i do serious R&D work in my lab so when i need a piece of equipment i expect it to work as it should, rather that babysit it all the time by constantly verifying that it is outputting what i set it to. But on the other hand i cant afford to buy only top notch professional gear(I still do have a quite a bit of hp/agilent gear), i am ok with a cheep piece of test gear performing not so great but as long as it works as it should. I love the cheep 50 dollar Atten hot air station i had for some time. Sure it looks and feels cheep as heck, but it got the job done every single time i needed it. I like it so much that i will probably never buy another hot air station until this one stops working. Tools don't have to be expensive to be good, or perform the best but they at least have to work reliably if you ask me. Don't let this discourage you from buying one of these Hanteks. Just be mindful that this is not a true professional tool, its just something half way between a proper tool and the $10 ebay crap. |
| Simon:
any idea if they are short circuit protected ? |
| Berni:
--- Quote from: Simon on October 25, 2015, 03:31:44 pm ---any idea if they are short circuit protected ? --- End quote --- All signal generators with a 50Ohm output should have no problem driving a short circuit on its output for an indefinite amount of time. What might kill it tho is a short circuit to a large voltage supply rail like 24V or perhaps it needs to be as high as 48V. |
| luizhdinizf:
anyone knows a way to comunicate this instrument with a c or python or another interface with a ubuntu 14.04 computer over usb? |
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