Hi Giueppe,
My comments are below.
On Tue, Mar 18, 2025 at 07:00 AM, Giuseppe Marullo[iw2jww] wrote:
>the 6 pin LEMO connector at the back for WR probe, assuming someone
>didn't swap the boards inside.
I have the connector(not the probe), just I don't know how useful the
probe it could be in today's world. I have a separate DSLogic LA for
digital debugging.
I agree, WR probe may not be useful especially if you have a LA. With WR option back case have a BNC for trigger output. It is possible to re-wire it for 10MHz input for better CTT time resolution. Even it may not be that useful if you already have a frequency counter.
My scope is low serial one, there is no Dallas.
What is not clear to me is if the FRAM mod is suitable for a low serial,
and if eventually I could use the DALLAS on a low serial model.
In that case Dallas -> FRAM change is not applicable, at least it is not a drop in replacement. Your board has an accessible battery, if you are careful and supply a secondary power source you can change the battery without losing contents. You could even decide to put a battery holder for future replacement.
I have dumped the EXT 2 values and I would like to get rid of any
battery if possible but I am open to all the available options, possibly
validated by someone else.
I don't have a eeprom programmer but I will buy one if needed.
Thanks for the help!
With Dallas chip carefully desoldering it keeps the contents and you can read back the data. With your board you can't read the SRAM once it is removed. I don't have any experience with low serial A5 boards and I don't know if others have modifications for battery backed SRAM. I recommend supplying a secondary power source, then carefully removing old battery without shorting supplies and replacing with a new one. Then repeat in another 10-20 years :) I don't think EEPROM programmer will be of much use.
Ozan
