Products > Test Equipment

Possible GW Instek GDS-1000B hack

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tatel:
I'm back at home. Just calibrated the scope and got some screenshots

@ fungus: By zooming, I guess you mean to have the lowest timing per division, am I right?

I see rise time oscillating between 2,9 and 3,2 ns on all channels.

The more channels I activate, the (much) worse rise times... 5 ns and more with all channels activated? I could gladly take more screenshots if (any of) you have more suggestions

Screenshots attached

tatel:
FW 1.31 available:

Version 1.31
The channel's deskew range are expanded to +/- 1us.

Fungus:

--- Quote from: tatel on February 15, 2023, 07:29:58 pm ---The more channels I activate, the (much) worse rise times... 5 ns and more with all channels activated? I could gladly take more screenshots if (any of) you have more suggestions

--- End quote ---

more channels = lower sample rate.

tatel:

--- Quote from: Fungus on February 15, 2023, 10:16:59 pm ---more channels = lower sample rate.

--- End quote ---

Yep.

Anyway I think 3,2 ns rise time mean bandwidth could be a little > 100 MHz. It would agree with numbers reported by TK in reply #110 https://www.eevblog.com/forum/testgear/possible-gw-instek-gds-1000b-hack/msg2378559/#msg2378559

danymogh:

--- Quote from: tatel on February 15, 2023, 09:56:16 pm ---FW 1.31 available:

Version 1.31
The channel's deskew range are expanded to +/- 1us.

--- End quote ---

is it me or is their website download speed super slow?! can you upload the 1.31 firmware somewhere please?

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