compilerbitch: That's me, that is! (Default)

I’ve written about the Keithley before, but the HP 6612B power supply has been sitting in a box for a few days waiting on me getting time to unpack it and check it out. I’m very pleased. Can we say dead nuts? It’s just as accurate in voltage mode. This will be a very useful addition to the lab because it’ll avoid my usual spaghetti wiring monitoring voltage and current with two separate bench multimeters. I also rather like the fact that it has GPIB, which given its built-in measurement capabilities has Possibilities. It’s not a SMU, but it’s a credible quarter-of-a-SMU, and seemingly accurate enough to do duty as a voltage/current standard if I only need 0.1%-ish precision.


Keithley 2015 THD & HP 6612B


If anyone gets the SMU joke, I’ll be impressed! 😉




Please note: this was cross-posted from my main blog at http://www.mageofmachines.com/main/2015/09/17/two-ebay-acqusitions-getting-nicely-acquainted/ -- If you want me to definitely see your replies, please reply there rather than here.

#Electronics, #MoMBlog, #TestGear
compilerbitch: That's me, that is! (Default)

I was asked elsewhere for high res photos of the knobs in situ for comparison with the originals.


Yep, not much comparison, but that wasn’t ever the point! I could probably have faked lookalikes, but this would have been a CNC machining job and a LOT of work. I could have done it using the 4th axis on the Sieg milling machine, but it would probably have taken me a couple of days at least. Sure, I could have made quite a few knobs once the CNC program was written, but for a one off, and particularly when I don’t really care much what the knobs look like, they just have to work, this was enough for me. :-)


High res closeup of replacement HP knob High res closeup of replacement HP knob


High res photo of replacement LeCroy knobs High res photo of replacement LeCroy knobs




Please note: this was cross-posted from my main blog at http://www.mageofmachines.com/main/2014/10/03/142/ -- If you want me to definitely see your replies, please reply there rather than here.

#3Dprinting, #Electronics, #MakerCulture, #TestGear, #Uncategorized

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