Products > Test Equipment
Sniffing the Rigol's internal I2C bus
<< < (441/899) > >>
dtran11:
Does anyone know what the unknown option for the DS1000Z is for yet? I just installed it but would like to know what it is for. Also how do I revert back to DS1074Z?

Thanks
AndersAnd:

--- Quote from: dtran11 on December 28, 2013, 08:34:11 pm ---Also how do I revert back to DS1074Z?
--- End quote ---
I already mention that in a previous answer to your question: https://www.eevblog.com/forum/testgear/sniffing-the-rigol's-internal-i2c-bus/msg355312/#msg355312

--- Quote from: AndersAnd on December 28, 2013, 07:03:11 pm ---
--- Quote from: dtran11 on December 28, 2013, 04:23:30 pm ---Also is there anyway to revert the options if I need to send in for repair?
--- End quote ---
Use the SCPI command ":SYSTem:OPTion:UNINSTall" to remove installed option keys again. Search this topic for :SYSTem:OPTion:UNINSTall
--- End quote ---
m-joy:

--- Quote from: alank2 on December 28, 2013, 08:12:23 pm ---neamyalo thank you for your work - would you be willing to upgrade to the latest firmware and repeat the full dump?

Your dump says it is 00.02.00.00.04 and the latest fw I know of is 00.02.01.00.03.

Thanks!

--- End quote ---


Does that change anything?where is cybernet btw...
Avotronics:



Thanks!
[/quote]

where is cybernet btw...
[/quote]

What are we, his nannies? Lol ;-)

tirulerbach:
Hello,

I remembered I'm owning a JTAG-Dongle...  :-/O It is an Olimex ARM-USB-OCD. In the meantime I opened my DS2202A, attached the JTAG, downloaded the bfin-uclinux stuff and started urjtag:


--- Code: ---jtag> cable arm-usb-ocd
Connected to libftdi driver.
jtag> frequency 500000
Setting TCK frequency to 500000 Hz
jtag> detect
warning: TDO seems to be stuck at 0
jtag>

--- End code ---

Lower frequencies didn't work either...

So after fiddling a little bit I assume that the Utst  Voltage (3.3V) on Pin 1 on the JTAG header is to weak. According to the schematic posted above it is connected via a pull-up of 10k to 3.3 Volts. The voltage drops to about 1.8V when I connect the JTAG-dongle. That is about 150uA.

So, do you think I just can use an external 3.3V supply for the JTAG-dongle?

Maybe this is the same issue which neamyalo very slow jtag speed? What do you think?
Navigation
Message Index
Next page
Previous page
There was an error while thanking
Thanking...

Go to full version
Powered by SMFPacks Advanced Attachments Uploader Mod