| Products > Test Equipment |
| SDS1104X-E DC offset in AC coupling |
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| pope:
--- Quote from: BillyO on April 04, 2023, 04:09:24 pm --- --- Quote from: pope on April 04, 2023, 03:00:54 pm ---What is the VGA configuration? --- End quote --- Variable Gain Amplifier. They are used in the front ends of scopes (and possibly other places).. https://www.ti.com/lit/gpn/lmh6518 --- End quote --- Thank you. So, what sort of improvement should we expect by this update/ optimisation? I'm just a bit nervous to update the o'scope in case it messes up with the offset as already mentioned... |
| BillyO:
Not sure why they would do it. Maybe gain sets were off a little. |
| Bionicbone:
And is this VGA only related to the hardware 09 issue as per previous update? |
| Deso:
--- Quote from: BillyO on April 04, 2023, 04:09:24 pm ---Variable Gain Amplifier. They are used in the front ends of scopes (and possibly other places).. https://www.ti.com/lit/gpn/lmh6518 --- End quote --- Ha, you're fast. I read tons of posts of @TV84 so I could dig deeper and found that the VGA chip must be the LMH6518 (which by the way has the ability to limit the input bandwidth programmatically). |
| BillyO:
--- Quote from: Deso on April 05, 2023, 07:42:27 am ---Ha, you're fast. --- End quote --- Well, maybe, but in this case I can't take credit. I saw the teardown that Dave did on it. The VGA was pointed out in that vid. |
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