Hello people
I have a TDS640 , TDS520 and TDS540 repaired. TDS520 have FFT Option (2F) and RS2327LTP Option (13), TDS540 FFT Option.
My researching and info from a forum have a succesfully result. This Hacking run only at old TDS540 and their family without floppy Disk and RTC (real time clock).
Thanks to a people of Tek& Keithley Forum.
https://forum.tek.com/viewtopic.php?f=568&t=136932&p=287810#p287810Preparing of Hacking is desoldering of NVSRAM or using tektool .
Adresse-counting is NVSRAM itself.
Pleas see Pictures, green numbers ((adr: 0x01FDCF) is CRC, it is only addition of all Value in this string. But not more than 69.
yellow numbers ist Option 13, (adr: 0x01FDED)
red numbers ist FFT Option (adr: 0x01FDEF)
00 = disabled
01 = actived.
Both actived, CRC = 69
one of both active, CRC = 68
If you have more than both option actived, then must "42" (adr: 0x01FDE3) changed to other (lower) value. Important: CRC Value cannot be more than 69.
1M Option, i don't know where is it (01 at 42 is probably, but i don't guess)
Have a fun with hacking of old TDS540/640.
And excuse me for my not fine english.
Regards
Matt