Products > Test Equipment
Siglent SDS1104X-E DC offset thermal drift
nixz:
--- Quote from: tautech on December 15, 2022, 10:58:21 pm ---OS version should be 8.3. There are several additions to the feature set that require this new OS to be installed.
It is one of the easiest upgrades as you just place the new OS files is the root of a USB stick then boot the DSO.
Just remember to delete them afterwards otherwise they will run each time the DSO boots if left plugged into the USB port.
--- End quote ---
Where is OS 8.3 on the page https://int.siglent.com/download/firmwares/?ProId=12 ?
I have 8.2 - latest I have found. I've tried FW V6.1.37R9 and older V6.1.37R8 - no change.
Interesting is that adding termination on input (50 or 75 ohm) in DC coupling mode moves trace down by ~500uV. In AC coupling mode termination do not influence trace it stays out of screen... This is not true for ch 4 - it works in AC/DC with and without termination |O
tautech:
--- Quote from: nixz on December 15, 2022, 11:21:54 pm ---Where is OS 8.3 on the page https://int.siglent.com/download/firmwares/?ProId=12 ?
I have 8.2 - latest I have found. I've tried FW V6.1.37R9 and older V6.1.37R8 - no change.
--- End quote ---
https://int.siglent.com/upload_file/zip/firmware/Oscilloscope/SDS1xx4X-E_OSV2_EN.zip
While it is labelled OSV2 it is the 2nd OS release since the original release version so shows in the instrument as V8.3.
Edit to add
The OS install is required to obtain full functionality of the new Logging and Clock features.
pope:
--- Quote from: tautech on December 16, 2022, 12:02:34 am ---
--- Quote from: nixz on December 15, 2022, 11:21:54 pm ---Where is OS 8.3 on the page https://int.siglent.com/download/firmwares/?ProId=12 ?
I have 8.2 - latest I have found. I've tried FW V6.1.37R9 and older V6.1.37R8 - no change.
--- End quote ---
https://int.siglent.com/upload_file/zip/firmware/Oscilloscope/SDS1xx4X-E_OSV2_EN.zip
While it is labelled OSV2 it is the 2nd OS release since the original release version so shows in the instrument as V8.3.
Edit to add
The OS install is required to obtain full functionality of the new Logging and Clock features.
--- End quote ---
I'm a bit confused. I updated my scope last March and it shows "8.2".
Is the .zip you uploaded a newer OS version and if so, should it show "8.3" on the scope after the update?
tautech:
--- Quote from: pope on December 16, 2022, 10:54:48 am ---
--- Quote from: tautech on December 16, 2022, 12:02:34 am ---
--- Quote from: nixz on December 15, 2022, 11:21:54 pm ---Where is OS 8.3 on the page https://int.siglent.com/download/firmwares/?ProId=12 ?
I have 8.2 - latest I have found. I've tried FW V6.1.37R9 and older V6.1.37R8 - no change.
--- End quote ---
https://int.siglent.com/upload_file/zip/firmware/Oscilloscope/SDS1xx4X-E_OSV2_EN.zip
While it is labelled OSV2 it is the 2nd OS release since the original release version so shows in the instrument as V8.3.
Edit to add
The OS install is required to obtain full functionality of the new Logging and Clock features.
--- End quote ---
I'm a bit confused. I updated my scope last March and it shows "8.2".
Is the .zip you uploaded a newer OS version and if so, should it show "8.3" on the scope after the update?
--- End quote ---
Normally but not always.
If the new features introduced in SDS1xx4X-E_OSV2_EN.zip and FW V6.1.37R9 work as expected then there is no problem however most instruments will display OS 8.3.
My pre-public release SN#12 SDS1104X-E shows 8.2 OS but I know the new OS is installed.
IDK the reason why this is and only you know if the OS was installed.
sonpul:
My 1202X-E also shows an offset that stops after 30min. One channel is shifted more strongly, the second is weaker. I'm thinking about what to do with it.
If you calibrate 30 minutes after switching on, then you need to use it after 30 minutes.
If more often the device is needed immediately, then you can calibrate immediately after switching on. But then, after a while, the drift will shift the line, which is what happens with the author of the topic.
I think this is due to uneven airflow around the board.
The second reason, maybe it's chemical residues after production?
Perhaps this is the Thermal EMF of the relay contacts?
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