Products > Test Equipment
Sniffing the Rigol's internal I2C bus
<< < (431/899) > >>
Carrington:
Some changes in the input stage (resistor and trt) from NON-A to A (in Black HW 2.0 NON-A):



I guess that they have also changed some capacitors. Any volunteers to measure their value?
Note: Resistor without marking code -> unknown value.

Carrington:

--- Quote from: AndersAnd on December 24, 2013, 01:44:56 am ---Analog Devices ADR5044A (4.096 V Precision Micropower Shunt Mode Voltage Reference) has a R2W marking on it. (See bottom of page 14):

...

Not sure if any other devices has the same R2W marking on them too or not.

--- End quote ---


Impossible. Must be a NPN trt. I'm pretty sure that is a BF93A (R2*).

* = p -> made in Hong kong.
* = w -> made in china.


Other possibilities (NPN and SOT23 only):
http://www.ecadata.de/searchnew/index2.html
Carrington:

--- Quote from: cybernet on December 23, 2013, 11:15:19 pm ---Mode 0 and Mode 1?

...

Likely the BMODE pins of the BFIN - toggle between flash/spi boot - where spi is what they use to flash the bootldr - one of my first posts in that thread was regarding bmode pins.
if somebody wants to mess with them with boundary scan u can check the bfin pins logic levels nicely.

--- End quote ---
Maybe I read it. I no longer remember.
Sorry.
Wim13:
Also posted in the main Rigol topic, but for the others, i updated my bandwidth chart with the 300 Mhz option.
There is not much enhancement for the non A models. Even worse, it not very stabel the 300 Mhz
option . That is i think why Rigol never sold 300 Mhz versions of the non A.

Some others also measured, and there are differences around 1 dB, which is normal
for devices at the end of there capabilities. These measurements are all made on the same 2072.

So i will stay for DSEZ, the E for CAN and the Z for DS2202 with al options.

Edit: the bandwidth is measured only on hardware version 1.0.1.0.0
alank2:

--- Quote from: Wim13 on December 25, 2013, 04:11:59 pm ---Even worse, it not very stabel the 300 Mhz option.
--- End quote ---

Can you expand on this a bit?  What was not stable?

I looked at my other 2072 which has been untouched until now.  It has 3 keys VSAB, VSAC, and VSAE to load the trial options, so my theory that the SN/model are loaded with keys is false.  The 4 keys for the unit that was dumped here probably includes a can trial too which explains the extra key.
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