Isn't larger diff between the two mean cpu heat is not being sinked out to amb fast enough? cpu temp can be no lower than ambient temp, so isnt smaller diff better?
Do all 900 series oscilloscopes have hardware number 8?
Do all 900 series oscilloscopes have hardware number 8?
Does the HW # actually mean anything in these DHO's, given their current code set? If you make it HW-12 on an actual 914, does that remove scope feature? If you make it HW-8 on an 802 does that provide more features?
Speaking of additional calibration options.. I hadn't noticed this before tonight. There is a "Detail" drop-down on the SelfCal window with some interesting calibration info. -if it passes-
(Attachment Link)
BTW: these are all the "additional calibration" options that I found to calibrate with success. Anything else added will fail.
(Attachment Link)
FYI: it took 7 hours to test all the permutations, because some would go 98 or 99% before stopping or crashing.
Does the HW # actually mean anything in these DHO's, given their current code set? If you make it HW-12 on an actual 914, does that remove scope feature? If you make it HW-8 on an 802 does that provide more features?
I thought Mechatrommer had already confirmed that you need to change the HW ID from 12 to 8 in order to get digital triggers to work?
Do all 900 series oscilloscopes have hardware number 8?
I can confirm 924S has (originally) HW number 8.
Speaking of additional calibration options.. I hadn't noticed this before tonight. There is a "Detail" drop-down on the SelfCal window with some interesting calibration info. -if it passes-
(Attachment Link)
BTW: these are all the "additional calibration" options that I found to calibrate with success. Anything else added will fail.
(Attachment Link)
FYI: it took 7 hours to test all the permutations, because some would go 98 or 99% before stopping or crashing.The cal items seen after x3 About press, is a bit confusing. Are the ones selected by default the same items used when you just have the std Cal menu of "start"? Or is the std set something different? Is that in the manual?
Rigol should at least identify which ones selected are in the std set of cal tests. And why does selecting the other tests fail? If they are tests not applicable to the device then they should be grayed out. If they are applicable tests and they fail, why do they fail?
I thought Mechatrommer had already confirmed that you need to change the HW ID from 12 to 8 in order to get digital triggers to work?That's it, just the one item? How does that work on an 800 model? Isn't that feature only for the digital analysis port found on the 900's ?
900's have trigger type CAN and LIN, 800's do not. So 800 HW-8 turns on CAN and LIN ? I shall take a look.
900's have trigger type CAN and LIN, 800's do not. So 800 HW-8 turns on CAN and LIN ? I shall take a look.
Seems unlikely. I assume that the hardware ID only encodes differences in the actual hardware on the PCB. More likely the vendor ID controls which software options are enabled.
But 800's have I2C and SPI, it does not require the digi port for that.
Is CAN and LIN tied directly to the digi port and the scope can't use CAN or LIN trigger on BNC port?
Also, see my edit comment in my last post behind this one.
But 800's have I2C and SPI, it does not require the digi port for that.
Is CAN and LIN tied directly to the digi port and the scope can't use CAN or LIN trigger on BNC port?
Also, see my edit comment in my last post behind this one.
Bit of a mix-up there. The HW ID 8 is required to enable triggering from the digital input channels. This is unrelated to decoding serial protocols (or triggering based on decoded protocol signals) captured through the analog channels.
The latter decoder and trigger options do not require specific hardware options on the PCB, and hence are most likely not controlled by the hardware ID. The choice which ones to make available in which models was a pure marketing decision on Rigol's part: Need to reserve some goodies for the more expensive 900 models...
So I perhaps conclude HW # is not really relevant unless one decides to add a digi port to an 800 model. I do not get any benefits running my 804 as HW-8. The extra CAN and LIN appears to come from running the 914 vendor.bin
Three photos of underside of CPU in original & unmodified DHO924S. If somebody wants more photos of something particular - better tell me now.
So, in summary, There are two HW #'s for 800's, 2ch and 4ch model. For 900's there's just HW-8, they are all 4ch w/ digi port. So, HW-8 only seems to indicate that the device has extra hardware (804 more than the 802, 900's are a opened 804 with digi port.)
So I perhaps conclude HW # is not really relevant unless one decides to add a digi port to an 800 model. I do not get any benefits running my 804 as HW-8. The extra CAN and LIN appears to come from running the 914 vendor.bin
HW-8 --> 4ch with digi port (with AFG?)
HW-12 --> 4ch with no digi port
HW-xx --> 2ch with front side EXT trigger and no digi port (I forget the HW # for the 2ch devices, and I am not sure front EXT is hardware or not).
All the 900's are HW-8 ? Does that mean they all have AFG but only S models have it activated? Isn't AFG more hardware, or is that done via FPGA or something?
Is the Sa/s rate bound to the ADC? If so can the ADC actually do better than 1.25 Sa/s ?
I notice via logcat that RIGOL.SCOPE : [drv_scope.cpp] [ConfigAquire] [2619] gets sample rate as ":WavSa :SampleRate".
Maybe hackable via software?
Three photos of underside of CPU in original & unmodified DHO924S. If somebody wants more photos of something particular - better tell me now.
Could you take a photo of the side of the input tract?(Its analog part)
Three photos of underside of CPU in original & unmodified DHO924S. If somebody wants more photos of something particular - better tell me now.
Could you take a photo of the side of the input tract?(Its analog part)
Input stages? I already did. First things first. Now Im removing LC filter from channel 4 and adding missing capacitors around dc-dc converters - some of them wasnt populated (one instead of two parallel).
So, in summary, There are two HW #'s for 800's, 2ch and 4ch model.
I do not get any benefits running my 804 as HW-8. The extra CAN and LIN appears to come from running the 914 vendor.bin
All the 900's are HW-8 ? Does that mean they all have AFG but only S models have it activated? Isn't AFG more hardware, or is that done via FPGA or something?