Products > Test Equipment
Sniffing the Rigol's internal I2C bus
m-joy:
--- Quote from: Wim13 on December 25, 2013, 04:11:59 pm ---
So i will stay for DSEZ, the E for CAN and the Z for DS2202 with al options.
--- End quote ---
Huhu. So DSEZ does enable 200Mhz and all options including CAN but no 300Mhz.?
Greets
staze:
And remind us, is this the 2072 hw 1 or hw 2?
And did you self-cal with each of these bandwidths?
Wim13:
The entry chip LMH6518, has to the datasheet several options, 200 ,350 or 650 Mhz.
as far i can see for 200 Mhz DS2202, it has already open the 350 mode. I dont
think Rigol has used the 650 Mhz option. But only stretched the gain for 350 Mhz to
get the 300 Mhz bandwidth, which gives on the old models not the correct functionality.
See chart below from the datasheet,
PA0PBZ:
*bump* Anyone having an idea how to convert a non-A model into an A? I also tried 'samegrading" (using the same latest software update), but again no difference. What I am after is the switchable 50 ohm input, I don't think there is much difference between the A and non-A models apart from that.
--- Quote from: PA0PBZ on December 24, 2013, 12:36:31 pm ---Well, I changed the jumper settings on my non-A version 2 hardware to reflect the -A settings (moved one resistor from the upper row to the lower row), but I can't find anything that has changed. The 50 Ohm is still greyed out and the model is still non-A. It has the latest software, and I tried booting with left-F6. Maybe it needs a factory reset, but I'm not sure how to do that.
--- End quote ---
elecBlu:
--- Quote from: alank2 on December 25, 2013, 04:19:44 pm ---Can you expand on this a bit? What was not stable?
--- End quote ---
his frequency response of the 300MHz option is not nearly as flat as it could be, look at his chart. But, as far as i remember, he has HW 1.0.
If that chart looks the same for HW 2.0, you better leave it at 200MHz.
Interesting to see that the A Models are not identical with HW2.0. So we have at least 3 different input stages out there.
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