I replaced the crt on my 640 w/ an LCD. I smiled for a brief second when
i saw colored text on boot, but it quickly turned back to monochrome within
a few seconds.
I'm guessing this is exactly what we're talking about, the
firmware/settings get bootloaded and it turns off functionalities.
thats all i can offer, but figured i'd mention
--Bill WW1H
On Tue, Mar 11, 2025 at 4:54?AM Dave B via groups.io <davebullockmbe=
[email protected]> wrote:
Hi Teksperts,
Is it possible to identify which options are locked within a Tektronix
TDS640A from the serial number?
I understand that many options are present but 'locked' from access on
lower spec models and are unlockable with a hardware/software 'hack'? I am
particularly interested in the FFT math function...
I am aware that there is often an extra 'sticker' on the rear of the
instrument declaring enabled options like (1F floppy drive) etc but is
there a database that explains what hidden options are available?
Secondly:-
Does anyone know if the VGA output displays in colour even if the
oscilloscope is shipped with a monochrome screen (and if VGA colour), can
the screen be substituted for a colour LCD like the "CRT and shutter" swap
previously described in this forum?
Thanks
Dave
