Products > Test Equipment
Siglent SDS1104X-E and SDS1204X-E Mixed Signal Oscilloscopes
pope:
--- Quote from: Calambres on September 18, 2023, 11:32:12 am ---otherwise (USB) I get noise (that's another story >:( )
--- End quote ---
What sort of noise? Care to elaborate?
Calambres:
--- Quote from: pope on September 18, 2023, 03:01:36 pm ---
--- Quote from: Calambres on September 18, 2023, 11:32:12 am ---otherwise (USB) I get noise (that's another story >:( )
--- End quote ---
What sort of noise? Care to elaborate?
--- End quote ---
Some time ago I said here that I have experienced a better Bode Plot speed using USB than via LAN but was a pain to use because I had both USB ports accupied: the front with a USB stick and the back with a WLAN adapter. The other USB port in the back (USB-B) was unsuitable for this. Tautech recommended me to use an USB hub to get extra ports and so I did. I bought one of those cheap USB hubs and plugged in the back USB-A port, and then plugged the WLAN port and the cable from the AWG into that hub.
Everythig worked fine but I began to experience some problems with noise: probing low amplitude signals, particularly when using 10X in the probes, resulted into high noise readings and what can be described as "occasional heebee-jeebies" with the scope traces. Suspecting from the recent hub addition I removed it and everything returned to normal. I'm pretty sure it may be because the USB hub I bought is one of those chinesium cheapos from AliExpress and sure it was cheap! the cable was not shielded neither the "shells" for the USB connections. I corrected those two issues and the problem disappeared almost completely with a little tiny bit of noise still present and very weak and less frequent "heebee-jeebies", but they're still there. As I do not want to have all my measurements permanently disturbed with noise and weird movements, no matter how weak they are, I decided to take the hub off definitely. Besides, I have no intention to try other hubs and discover the hard way they all make the same problems.
Because of that I'm now reverting to Bode Plot via LAN with the aforementined problems.
mwb1100:
These NTP options might help:
- "Sync" should force a re-synchronization with the NTP server. You'd have to do this manually, but pushing a button is better then screwing around with the NTP server address
- "Periodic Sync" on and "Interval" set to 1h should get you an automatic re-sync within an hour. So if you can live with the time not being right for an hour...
It's too bad the shortest re-sync interval is 1h
mwb1100:
--- Quote from: Calambres on September 18, 2023, 03:50:53 pm ---Besides, I have no intention to try other hubs and discover the hard way they all make the same problems.
--- End quote ---
I certainly can't say that a hub from a respected vendor would solve your problems, but I do think there's a really good chance that a hub from a respected vendor would behave better than a 90 cent no name Aliexpress USB hub.
tautech:
--- Quote from: Calambres on September 18, 2023, 03:50:53 pm ---
--- Quote from: pope on September 18, 2023, 03:01:36 pm ---
--- Quote from: Calambres on September 18, 2023, 11:32:12 am ---otherwise (USB) I get noise (that's another story >:( )
--- End quote ---
What sort of noise? Care to elaborate?
--- End quote ---
Some time ago I said here that I have experienced a better Bode Plot speed using USB than via LAN but was a pain to use because I had both USB ports accupied: the front with a USB stick and the back with a WLAN adapter. The other USB port in the back (USB-B) was unsuitable for this. Tautech recommended me to use an USB hub to get extra ports and so I did. I bought one of those cheap USB hubs and plugged in the back USB-A port, and then plugged the WLAN port and the cable from the AWG into that hub.
Everythig worked fine but I began to experience some problems with noise: probing low amplitude signals, particularly when using 10X in the probes, resulted into high noise readings and what can be described as "occasional heebee-jeebies" with the scope traces. Suspecting from the recent hub addition I removed it and everything returned to normal. I'm pretty sure it may be because the USB hub I bought is one of those chinesium cheapos from AliExpress and sure it was cheap! the cable was not shielded neither the "shells" for the USB connections. I corrected those two issues and the problem disappeared almost completely with a little tiny bit of noise still present and very weak and less frequent "heebee-jeebies", but they're still there. As I do not want to have all my measurements permanently disturbed with noise and weird movements, no matter how weak they are, I decided to take the hub off definitely. Besides, I have no intention to try other hubs and discover the hard way they all make the same problems.
Because of that I'm now reverting to Bode Plot via LAN with the aforementined problems.
--- End quote ---
Exactly what you would expect using 10x probes when input settings are set to high sensitivity levels.
Suggest you get some BNC to croc leads and use only 1x input attenuation when noise is a problem.
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