Products > Test Equipment
Anritsu MS2721B internal CF card missing
analogRF:
most likely this is a hardware issue. I have had a number of of these with FW problem and I have never seen this blinking splash screen. Besides it must respond to the bootstrap mode booting (1-3-5 key) otherwise even the bootloader is not running which has nothing to do with the CF card. If you boot with a blank CF card you can still go to bootstrap mode (I have done it and so did Shahriar I think). So I think it must be a hardware issue. Maybe that HW issue was there before you upgraded and even though the unit was "working" with the old FW, but when it came to upgrading FPGA's or the fash memory, it failed and got stuck.
As for the content of the CF card, it is just the unpacked FW, that's it. Nothing else. If you just unpack the FW file on a blank CF card (FAT format) it works
However the version must match with what is residing on the flash memory on the board and also the fpga's, therefore you still need to use MST software to load the FW into the unit or it wont boot on its own (unless you had the right FW unapacked on the CF card).
my advice is that the best and safest way to upgrade these old units is to use MST software (LAN connection) Even if it fails, and it sometimes does, it is easily recovered by MST on the next try. USB method of upgrading is faster but is not really reliabel on these old instruments. Newer models like s331/332e ms2712E etc....are fine.
nexus:
I see. I can't believe the thing would suicide if it was working before just because of a bad firmware update. I'm sure the files I downloaded and the flash drive were not corrupted.
One thing I could try maybe is to load FW 1.32 onto the CF from my PC and see if it will boot even with old fw. I did not copy the CF before the update, but hopefully 1.32 is online somewhere.
If it is not reaching the bootloader, is it truly borked? I'm not sure which HW components are updated between fw 1.32 and 1.51. Does it actually update CPLD, FPGA, or other software driven devices besides main fw between these versions?
nexus:
Also, what should the behavior be if there is no CF installed on power on? Which screens, etc does the unit show?
nexus:
Assuming that the onboard flash is corrupt ( 2 x (RC28F256P30B85)), would trying to get these ICs from a parts unit be a good strategy? Perhaps the non-corrupt chips could be read and new copies could be programmed?
I can find new ones on eBay: https://www.ebay.com/itm/334463856043?hash=item4ddf996dab:g:gXcAAOSwvrRfvcFu
Plus stencils: https://www.ebay.com/itm/193122926047?var=493309027882
Has anyone been able to read or successfully transfer images from these ICs? I see that there were two versions of firmware stickers on mine. Not sure if it went back to Anritsu at some point and was updated.
Also, my ethernet IC was also 50C + like another person had experienced. I removed it but the unit's behavior has not changed. Nothing else sticks out on thermals.
Remember that this unit was fully operational before the attempted firmware update that killed it. I would hope that if it is as simple as corrupt flash, then salvaging the image from another analyzer and replacing the bad memory could fix it.
nexus:
Ethernet controller getting hot. Now removed but no changes.
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