Electronics > Repair
Fluke 289 not quite sorted.
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frenky:
Thank you. That is really nice of you. ;)  :-+
frenky:
When I power on Fluke 287 I get this out of TX:


--- Code: ---+jffs2_read_inode() failed

fs: Open failed, error 2
Can't load '/system/apps/clem.img': error 0

err_printf: aborting command
load /system/apps/clem.img failed... trying /system/apps/BackupClem.img

fs: Open failed, error 2
Can't load '/system/apps/BackupClem.img': error 0

err_printf: aborting command
load /system/apps/BackupClem.img failed

No network interfaces found

RedBoot(tm) bootstrap and debug environment [ROMRAM]
Non-certified release, version v2_0_74 - built 15:56:18, Sep 27 2007

Platform: Fluke Clem (ARM9)
Copyright (C) 2000, 2001, 2002, 2003, 2004 Red Hat, Inc.
Copyright (C) 2003, 2004, 2005, 2006, 2007 eCosCentric Limited

RAM: 0x00000000-0x007fb500, [0x0004dcb0-0x005d8500] available
FLASH: 0x10000000-0x107fffff, 63 x 0x20000 blocks, 4 x 0x8000 blocks
RedBoot>
--- End code ---

Do I have to reflash firmware? Is that done over IR or with jtag?
purpose:
I'd imagine having to use the jtag, as our meters are kaput.
There is some info in this pdf that might help.
media.fluke.com/documents/287-289_mveng0200.pdf

peter

frenky:
Thank you. This document does help me understand how this dmm works a bit better.

I did some investigation around this debug console (baud rate 115200) that I have found:
(This serial console is not related with IR port, there is nothing being transmitted via IR during boot)



On TX I get error message about missing system image. So I tried to hook on with with computer but no luck.
When signal pulls RX to the ground both RX and TX go to LOW state and stay LOW until I reset dmm.

I tried adding 100k pullup resistors to both lines but that did not help.
Every time I try to send a command from PC to DMM both lines go LOW.
I have no idea why.

I have extracted Fluke's exe file and found clem_1_16.img.gz which is the missing file on my DMM. I would like to put it back on via serial port...


--- Quote ---RedBoot allows download and execution of embedded applications via serial or Ethernet, including embedded Linux and eCos applications. It provides debug support in conjunction with GDB to allow development and debugging of embedded applications. It also provides an interactive command line interface to allow management of the Flash images, image download, RedBoot configuration, etc., accessible via serial or ethernet. For unattended or automated startup, boot scripts can be stored in Flash allowing for example loading of images from Flash, hard disk, or a TFTP server.
--- End quote ---
https://wiki.openwrt.org/doc/techref/bootloader/redboot
purpose:
Frenky,
I barely know the difference between resistors and raspberries, so that's all gobbledegook to me, but I'll leave it to you young ones to get to the bottom of the software stuff.

BTW... did you get enough voltage info from sacral, or do you still need another testfest?
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