Products > Test Equipment

Possible GW Instek GDS-1000B hack

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slodat:

--- Quote from: nctnico on March 25, 2019, 10:12:26 am ---
--- Quote from: slodat on March 25, 2019, 04:22:33 am ---It won’t unlock any of the features.

I’m having a problem with the filter app. It installed fine. When I go to use it sometimes the settings on the vertical menu are grayed out. Then, out of now where after using the scope they will be there, then another time I look they are greyed out..

--- End quote ---
The filtering works for 1Mpts and shorter memory lengths.

--- End quote ---

I had it set at 1Mpts and three channels active. Controls were greyed out.  Hmm

Mortymore:
I think I see what you're saying...

The "problem" is with the digitalfilter APP. In the screen capture attached I had a 4.1Mhz square signal with a record length of 10M pts and the filter setup is enabled.
Once enabled, it will continue enable above the 4.1 MHz if I don't hit the "autoset" button, but above that frequency (got it by trial and error), if I press the "autoset" the filter menu will be disabled. The actual filter settings seemed that have no effect. On the screen showed is set 60MHz, but I had it in the KHz range with the same result.

The parameters here may be different for you. I didn't bother to change amplitude or shape of the wave, but i tried different frequencies and record length, but in this the fast test I done seemed to me that the limitation was in frequency. If set 4.2MHz the menu was off. There may be a limit related with frequency vs record length but I have not done thorough tests. Just tried to get an idea of what might be going on.

Vytautas:
Hi, guys,
Thank you all for contributing. I just updated my GDS-2072E to 300MHz plus Spectrum Analizer, using the lis2 file (don't remember, on which page it was). Brilliant! Now it almost became MDO-2302 (official version does not exist, only 2202), except for the AWG hardware, naturally.
I have a question. The scope shows input impedance of 1M in a way that suggests as if there was an option to choose also the 50Ohms. But the button under that option does not do anything. Has anybody investigated whether that is also a matter of software lincense, like kicking in of some relay or is it a hardware limitation. I had not dissasembled my unit (yet), so have not had a chance to sneek in.

nctnico:
AFAIK the hardware doesn't support 50 Ohm. GW Instek seems to be using a very generic firmware base for their oscilloscopes so some disabled buttons may show up in some places.

ebastler:

--- Quote from: tv84 on March 25, 2019, 12:24:45 pm ---
--- Quote from: frogblender on March 25, 2019, 03:27:04 am ---ANYONE with a GDS-1054B:   after applying the hack, what is the actual BW?

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Msg #58

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No, not really.  ???

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