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| x1 Oscilloscope Probe Shootout |
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| EEVblog:
The Rigol PVP3150 vs the Siglent PP510 oscilloscope probes in x1 mode. Choose your fighter. |
| TomKatt:
1X probes don't get the love they should get... For many tasks that don't require 10's of Mhz - such as audio, many power supplies, serial ports and even many small ucontroller testing a 1X probe can offer better resolution than a 10X probe. My Probe Master 4901-2 1X/10X has a 1X BW of 10Mhz (love these!). The fixed 1X 4903-2 has a BW of 30Mhz (the shorter 1m cable 4903-1 goes to 38MHz). Even the DIY coax 1X clip probes I made go 20Mhz+ Seems like fixed 1X probes perform better than switchable versions. But extremely interesting video - I was not aware the Rigol PVP3150 performs that well in 1X mode. That's impressive. |
| EEVblog:
--- Quote from: TomKatt on September 20, 2023, 12:26:52 pm ---My Probe Master 4901-2 1X/10X has a 1X BW of 10Mhz (love these!). The fixed 1X 4903-2 has a BW of 30Mhz (the shorter 1m cable 4903-1 goes to 38MHz). Even the DIY coax 1X clip probes I made go 20Mhz+ Seems like fixed 1X probes perform better than switchable versions. --- End quote --- Nice! https://probemaster.com/4900-oscilloscope-probe-basic-kit-150-300-mhz/ |
| gamalot:
Rigol PVP2150/2350 also have 35MHz bandwidth in 1x mode. |
| TomKatt:
--- Quote from: gamalot on September 20, 2023, 12:44:15 pm ---Rigol PVP2150/2350 also have 35MHz bandwidth in 1x mode. --- End quote --- Wow! If those are real specs those probes rival much more expensive competitors. I wonder what the engineering trick is for getting such high BW at 1X... I'm guessing the cable capacitance plays a large part. I've noticed that the coax used on my Probe Master's is a bit thicker and more robust (but even more supple silicone) compared to most oem probes provided - which is great for production floor or rough environments. Edit - in any event, glad to see 1X demonstrated as being much more capable than generally considered. Edit 2 - I see the Rigol datasheet has a footnote indicating the 35Mhz BW 'Connected to an appropriate Rigol Oscilloscope'. I'm guessing the scope front end capacitance is also a factor affecting BW. |
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