Products > Test Equipment
Need Tektronix TDS220 firmware file
george.b:
--- Quote from: clauditaolivia on December 28, 2019, 07:48:17 pm ---Hello.
This is my first time on the blog. I need to upgrade my tds2cm module to tds2mm, but the speed of my new chip ram is 70 ns and the seller send me an amc27c040 120ns. Can i use them? Does the speed between the ram chip and the memory maters? (I´m not an electronics expert just an amateur) I noticed you( OH2LIY) used an am29f040b -90ns(well i think so because of your photos). I hope you can help me. Cheers from Mexico
--- End quote ---
Yes, the speed matters. Not between RAM and ROM, but relative to the CPU.
I tried a 150ns part and had no luck. 120ns might work. 1/120ns = 8.33MHz, and the CPU clock is 7.something (I can't recall exactly). 150ns translates to 6.67MHz, which would explain why it didn't work for me.
clauditaolivia:
Thank you.
I will buy a new one AM27C040. By the way, do you have the firmware for tds 220 v1.17 or supperior ? I used it the one uploaded on previous page but it`s for the 210 and mine is 220 also the factory calibration failed (with the original eprom the factory calibration is passed. Cheers from Mexico
george.b:
--- Quote from: clauditaolivia on December 30, 2019, 05:01:46 am ---Thank you.
I will buy a new one AM27C040. By the way, do you have the firmware for tds 220 v1.17 or supperior ? I used it the one uploaded on previous page but it`s for the 210 and mine is 220 also the factory calibration failed (with the original eprom the factory calibration is passed. Cheers from Mexico
--- End quote ---
The ROM file is the same for both TDS210 and TDS220. An ID variable, stored in flash, is what determines the model. See https://www.eevblog.com/forum/testgear/tds-1000-2000-3000-bw-hack/
Nprod:
I have now tried an LCD module from a different seller and don't have the contrast issue anymore. This new screen has the same PCB layout and frame design as the one that originally came with the scope, so it looks like the specific revision of LM32P073 matters. For clarity, the one with the contrast problem looked like this:
While the good one looks like this:
I can't guarantee that this is true for all TDS scopes, so the best thing when replacing would be to look for ones that match the original.
TERRA Operative:
For those who need it, here is v1.04 firmware for the TDS2MM module
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