| Products > Test Equipment |
| Just got a Tek 2465A, couple questions (how I screwed the calibration data)!! |
| << < (7/17) > >> |
| MarkL:
--- Quote from: alpher on March 27, 2018, 08:04:18 pm ---I've checked the resistance, dead short to GND. --- End quote --- Oh well, I thought I had a good guess. Those top two screw pads are floating on my 2465 board, but it's obviously a different design. |
| z01z:
If it helps, these are the constants from a 2465A, written down from the screen (so there may be some errors). |
| alpher:
--- Quote from: z01z on March 28, 2018, 06:25:05 am ---If it helps, these are the constants from a 2465A, written down from the screen (so there may be some errors). --- End quote --- Wow, thanks man !! :) :) Much appreciated, will try them over the weekeend, now I have to figure out how to calculate "spiral" checksum. |
| MarkL:
--- Quote from: alpher on March 28, 2018, 12:42:05 pm ---Much appreciated, will try them over the weekeend, now I have to figure out how to calculate "spiral" checksum. --- End quote --- Here's a starter for you. I already figured out the "spiral-add" for the 2465. With any luck it's not too different from the 2465A: https://www.eevblog.com/forum/testgear/tektronix-2445-2465-cal-settings-earom-er1400/msg927144/#msg927144 It's just the assembly code that does the spiral-add translated into C. No points for efficiency. |
| alpher:
Thank you Mark, now I remember I read your thread awhile ago, if I remember right you were having a similiar issue only with a plain 2465, how did it end up for you? Must reread your thread. |
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