Scope probes as supplied by Rigol for the low end scopes, a discussion.

• #75 Reply
  Posted by Pjotr on 25 Jan, 2015 14:20
• Yes, we are proving that very cheap probes are crap anyway 
  
  My point was that with a faster source you will see even more ringing from the poor thing.
• #76 Reply
  Posted by sync on 25 Jan, 2015 14:44
• Quote from: blackdog on 25 Jan, 2015 13:28

  Anyone tried the Rigol RP2200 Probe? "Thats not so good Al..." (Weezer)
  The difference in time, is due to the length of the probe cable.
  I am not to happy about the RP2200 Probes...
  

  I had the same result in my test. The RP2200 overshoot.
  https://www.eevblog.com/forum/testgear/the-possible-hidden-cost-of-the-ds1054z-bandwidth-upgrade-hack/msg573856/#msg573856
• #77 Reply
  Posted by miguelvp on 25 Jan, 2015 20:25
• That picotech 60MHz probe beats them both, I know you don't have the model number posted, but if you find out what is it please share.
  
• #78 Reply
  Posted by dr.diesel on 25 Jan, 2015 20:51
• Has anybody mentioned the rubber/plastic on the ground alligator clip?  The dang thing is stiffer than a wedding dick, very difficult to squeeze and release.   
• #79 Reply
  Posted by electr_peter on 25 Jan, 2015 21:41
• Quote from: blackdog on 25 Jan, 2015 13:28

  First the pictures of the generator en the probe connectors
  
  

  Blackdog, what adapters did you use to connect scope probe tips to the BNC? Do you know a source in EU or eBay?
  I searched for such adapter pieces but could only find very expensive HP/Agilent/Tek adapters.
• #80 Reply
  Posted by Pjotr on 25 Jan, 2015 21:59
• Farnell has some sold separately from Tenma for about €6,-. But those adaptors are not universal because the size of probe tips differs. They fit or they are too big: Loose gnd contact, but still somewhat usable. Or they are too small and don't work at all.
• #81 Reply
  Posted by tautech on 26 Jan, 2015 00:13
• Quote from: electr_peter on 25 Jan, 2015 21:41

  Blackdog, what adapters did you use to connect scope probe tips to the BNC? Do you know a source in EU or eBay?
  I searched for such adapter pieces but could only find very expensive HP/Agilent/Tek adapters.
  

  All the probe tip to BNC adapters I have have come with the better quality probes I have.
  They are not normally included with probes that come with entry level DSO's.
  
  And yes they can be different sizes for some probe tips where the GND sleeve connects to the adapter.
• #82 Reply
  Posted by aargee on 26 Jan, 2015 06:57
• Quote from: dr.diesel on 25 Jan, 2015 20:51

  Has anybody mentioned the rubber/plastic on the ground alligator clip?  The dang thing is stiffer than a wedding dick, very difficult to squeeze and release.   
  

  
  I agree, the alligator clip is as stiff as dead dingos donger.
• #83 Reply
  Posted by EEVblog on 26 Jan, 2015 10:36
• Quote from: tautech on 26 Jan, 2015 00:13

  All the probe tip to BNC adapters I have have come with the better quality probes I have.
  

  
  Mine have all come bundled with expensive probes, designed to fit those probes, they are quite loose on the Rigol probes, often having to hold them in place by hand.
• #84 Reply
  Posted by Pjotr on 26 Jan, 2015 11:29
• The Farnell order code for the Tenma adaptor is 2414908. Given the price you can give it a try.
  
  
• #85 Reply
  Posted by tautech on 26 Jan, 2015 18:51
• Quote from: EEVblog on 26 Jan, 2015 10:36

  Quote from: tautech on 26 Jan, 2015 00:13

  All the probe tip to BNC adapters I have have come with the better quality probes I have.
  

  
  Mine have all come bundled with expensive probes, designed to fit those probes, they are quite loose on the Rigol probes, often having to hold them in place by hand.
  

  Exactly.
  
  

  Quote from: Pjotr on 26 Jan, 2015 11:29

  The Farnell order code for the Tenma adaptor is 2414908. Given the price you can give it a try.
  
  
  

  Do they give an probe tip diameter that it fits?
  Anybody mic'ed up the Rigol probes?
  
  
• #86 Reply
  Posted by Pjotr on 26 Jan, 2015 19:35
• The data sheet states 5mm: http://www.farnell.com/datasheets/1801350.pdf The ground sleeve of the Rigol probes is about 4.6 mm. But since it looks it has "springy" ground contacts it can be adjusted somewhat I guess.
• #87 Reply
  Posted by soren on 26 Jan, 2015 20:50
• Testec probes also come with a BNC to probe tip adapter.
  
  Their probes start at EUR 15.70, so that's another possible source for an adapter:
  
  http://www.reichelt.de/Probes-and-Accessories/2/index.html?&ACTION=2&LA=3&GROUPID=4043&LANGUAGE=EN
  
• #88 Reply
  Posted by Pjotr on 26 Jan, 2015 21:02
• I have a few of them and those look exactly the same as the Tenma. The Testec adaptor is also a few tenths of a mm too wide  for the Rigol probes and doesn't make a good contact. Better invest into the Testec HF series  or similar then directly
• #89 Reply
  Posted by Lightages on 26 Jan, 2015 21:24
• Those Testec probes look like good value, IF they live up to their specs and are good quality.