Products > Test Equipment
Anritsu MS2721B internal CF card missing
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brainstorm:

--- Quote from: fenugrec on November 15, 2021, 03:12:34 am ---
--- Quote from: brainstorm on November 15, 2021, 02:19:49 am ---After seeing that the network IC was that hot I decided to order it and wait for it to come on the mail

--- End quote ---

I think it's a good next step. Although looking at the DS, it says it can draw "up to 140mA" ? on 3.3V right ? that's a fair amount of power, probably only in certain cases, but if the CPU is leaving that IC in a weird state (or spamming some function inside it that draws more power) it could be another wild goose.
How about removing it altogether in the meantime ? See if that affects the boot sequence at all ?



--- Quote ---if you have working OpenOCD configs for that SH4 processor
--- End quote ---
Sorry, haven't much to add. HUDI/JTAG wasn't easily accessible on the board I worked on but AUD was, and that provided what I needed.

JTAG should give you at least boundary scan according to the DS... Is it realistic to write some massive bitbanging code to read the external memory that way ?
Otherwise I'm not sure what else it provides if there's no support code in the fw...


--- Quote --- The debug options that are available once the user code is running are astonishingly helpful
--- End quote ---

Oh do you still have access to the vxworks console ?
IIRC you can even load + run arbitrary code that way, right ?

--- End quote ---


So I removed the IC but unfortunately little has changed... I do need to go through the JTAG rabbit hole it seems because the screen is not giving any hints whatsoever :_S

Please do tell me more about that AUD support you worked with, sounds you have experience with SuperH4 targets (and possibly debug probes/equipment I could borrow? :P)

I do wish I still had access to the vxworks console, unfortunately that's not the case anymore since it fails very early in the boot sequence, no telnet access is feasible... for now... stay tuned on the new thread ;)
radef:

--- Quote from: analogRF on May 03, 2020, 02:21:46 am ---However, the only problem that I have right now is that the tracking generator option is nowhere to be seen  :-// |O |O |O |O
my instrument passes all self tests and works perfectly but the tracking gen is not anywhere...

--- End quote ---

Did you have any luck getting the tracking generator option to reappear?
analogRF:

--- Quote from: radef on April 14, 2022, 10:09:20 pm ---
--- Quote from: analogRF on May 03, 2020, 02:21:46 am ---However, the only problem that I have right now is that the tracking generator option is nowhere to be seen  :-// |O |O |O |O
my instrument passes all self tests and works perfectly but the tracking gen is not anywhere...

--- End quote ---

Did you have any luck getting the tracking generator option to reappear?

--- End quote ---

it's been a long time since then...yes, I got a destroyed main board from a ms2721b with TG, and transferred its EEPROM chip to mine and then changed the S/N in service menu
radef:

--- Quote from: analogRF on April 15, 2022, 11:40:10 am ---it's been a long time since then...yes, I got a destroyed main board from a ms2721b with TG, and transferred its EEPROM chip to mine and then changed the S/N in service menu

--- End quote ---

Excellent - thank you. I'm in a similar situation and this helps with my plan of attack.  :-+
nexus:
Hi All,

Reviving this thread bc I also am working on an MS2721B and encountered what I believe to be a firmware related issue.

I had my MS2721B opened up to repair an intermittent LO1 unlock. This issue is common with the VCOs in the SA due to cold solder joints. I was able to touch up the solder in and around the VCO and fixed the LO1 unlock issue. I had the instrument running for a while and checked the SA and TG operation. Everything was working fine.

I checked the FW version and it was 1.32. I saw on the Anritsu website that the latest FW is 1.51. I downloaded the USB thumb drive installer, prepped a new flash drive, and put the firmware package on the thumb drive. I put it in the instrument and followed the instructions as per the firmware update manual.

The instrument began with copying the files, then it was on the "Operating system loading" page for a while. I thought perhaps the instrument is just slow and takes a while, so I left it alone overnight.

In the morning, it was just on the initial "Anritsu" boot screen with no loading bar present. It must have been sitting there for hours. I pressed the power button and it turned off normally. I tried turning it back on again, and it just kept flashing the white "Anritsu" screen and turning off. It does this perpetually; the "Anritsu" screen turns on for 1 second, then goes black for a second, then on again.

I opened the unit up again and removed the firmware CF, just to try powering on. It does the same exact thing with or without the CF installed.

I ordered a CF reader since I don't have one, as well as a few NOS 512mb CF cards.

What should the unit do without the CF installed? I downloaded Anritsu Master Software Tools and I tried the "1-3-5" key combo on power up as well, the unit does not respond to this. Are there any other boot sequences or key combos I can try while I wait for a CF reader? Anyone else had this issue before?

Also, if anyone has a CF OS image they could share for reference, that would be great as well. I'm not 100% clear on what the contents of the CF should be, if I were to try and format it in my PC before reinstalling in the unit.
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