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Terry Schwartz <tschw10117@aol.com>: Jan 24 02:54PM -0800 On Wednesday, January 23, 2019 at 8:14:43 PM UTC-6, Peter Jason wrote: > the bearings.   > Is this serious? > Peter   The bearings may not be hot but they can still get noisy.

Look165 <look165@numericable.fr>: Jan 25 09:57AM +0100 Maybe some WD40 would help.   Peter Jason a écrit le 24/01/2019 à 03:14 :

N_Cook <diverse@tcp.co.uk>: Jan 25 12:31PM On 24/01/2019 02:14, Peter Jason wrote: > the bearings.   > Is this serious? > Peter   Is it being powered by clean sine 50/60 Hz or some sort of dirty chopped/synthesised 3 phase via a converter?

ehsan.noroozinejad@gmail.com: Jan 25 02:50AM -0800 > List of Solutions Manuals and Test Banks > ________________________________________   > Dear Sir/Madam,   Please send me the solution manuals for :   Solution manual Unified Design of Steel Structures (2nd Ed., Louis Geschwindner) Solution manual Unified Design of Steel Structures (3rd Ed., Louis Geschwindner)   Warm Regards, Ehsan

tubeguy@myshop.com: Jan 24 06:36PM -0600 I cant find this state on the map.   I'm referring to the State called SOLID, or SOLID STATE! (And by the way, who is their governor)?   .... :)

Jeff Liebermann <jeffl@cruzio.com>: Jan 24 06:58PM -0800 >I cant find this state on the map. >I'm referring to the State called SOLID, or SOLID STATE!   You don't look on a map to find solid state. You use a phase diagram like these: <https://www.google.com/search?q=solid+liquid+gas+state+triple+point&tbm=isch> The solid state is usually located on the left. If none is found, it might be hiding in the gas or liquid states. Lower the temperature or increase the pressure, and the solid state should appear.   >(And by the way, who is their governor)?   There is no governor. The American Chemical Society is run by a board headed by a president: <https://www.acs.org/content/acs/en.html> Physics is also has a board and a president: <https://www.aps.org/> If you need help finding solid ground, I'm sure one of these organizations can find you a phase diagram.   -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558

tabbypurr@gmail.com: Jan 24 10:21PM -0800 > I'm referring to the State called SOLID, or SOLID STATE! > (And by the way, who is their governor)?   > .... :)   They took over Vacuum State - you know how nature abhors a vacuum.   Governor? Some trans sister.     NT

KenW <ken1943@invalid.net>: Jan 24 06:06PM -0700 >I'm referring to the State called SOLID, or SOLID STATE! >(And by the way, who is their governor)?   >.... :)   Did you try State of Confusion ?

etpm@whidbey.com: Jan 24 11:29AM -0800 I got my new to me BK precision 4001A function generator and I thought I would see what it does. Tried looking at square waves but they weren't square. The probe is a Probe Master 100 MHz. So, trying 3 other probes the display shows nice square waves. Using the output on the TEK 465B 'scope itself also shows nice square waves. The display should show horizontal lines 1 division long and separated by 1.5 divisions, according to the dial settings on the 'scope. But instead the lines sweep up and down from the center and the closest points of the lines are only about 1/5 of a division apart. I tried adjusting the probe by turning the adjusting screw with an insulated screwdriver, and although it does flatten the shape some it does not fix it. So the probe must be trash but what could cause this behavior? Thanks, Eric

4ctestsystems@gmail.com: Jan 24 01:27PM -0800 > So the probe must be trash but what could cause this behavior? > Thanks, > Eric   Do you mean you're seeing more of a triangle wave with 1/5 div peak to peak?

Paul Drahn <pdrahn@jodeco.com>: Jan 24 01:38PM -0800 >> Thanks, >> Eric   > Do you mean you're seeing more of a triangle wave with 1/5 div peak to peak?   Perhaps the prob has been repaired and the wrong coax used. Probably should be 95-100 ohm.   Paul

Mike <ham789@netscape.net>: Jan 24 02:11PM -0800 > So the probe must be trash but what could cause this behavior? > Thanks, > Eric   First thing to do is describe the experiment in enough detail to think about it. What model probe master? link to specs? 3 "other" probes? More description might be helpful.   Divisions??? Frequencies are important. Sweep rate? Not at all clear what you mean by separated by divisions and up and down from center. Are you saying that the DC levels using the good probe are not centered around ground but the bad probe is? AC coupled looking?   What do you measure OHMS from the tip of the probe to ground with the probe connected to the scope with the input set to DC? What OHMS do you measure across the BNC with the tip shorted? Tip Open?   Can you get the BNC end apart to measure the cable resistance?   TEK scope probes had a resistive center conductor, but it wasn't a huge number relative to the input impedance. probe master is unknown.   I'm betting that you have an open connection or a fried resistor somewhere in the tip or compensation box.   If you know anybody with a TDR, they could make short work of it.   Check the 9Meg resistor in the tip. Depending on what's in the compensation box or whether the probe has selectable 1X 10X, you might be able to measure it without disassembly.   If you can disconnect the center conductor of the cable at both ends, measure the capacitance at each end. If not the same, the ratio of capacitances give some idea where the break might be.

etpm@whidbey.com: Jan 24 02:32PM -0800 On Thu, 24 Jan 2019 13:27:38 -0800 (PST), 4ctestsystems@gmail.com wrote:   >> Thanks, >> Eric   >Do you mean you're seeing more of a triangle wave with 1/5 div peak to peak? What I mean is that if the wave was a proper shape there would be two horizontal lines 1.5 divisions apart. These lines have a shape that is a curve that starts fairly steep and then gets closer to flat. At the point where the curves are closest to flat I would expect to see 1.5 divisions separation. but it's more like 1/5 of a division. Eric

etpm@whidbey.com: Jan 24 02:34PM -0800 On Thu, 24 Jan 2019 13:38:54 -0800, Paul Drahn <pdrahn@jodeco.com> wrote:     >Perhaps the prob has been repaired and the wrong coax used. Probably >should be 95-100 ohm.   >Paul I bought the probe new many years ago and have never seen any reason to repair it. There is no obvious damage. Could dropping it have caused the problem? Eric

Terry Schwartz <tschw10117@aol.com>: Jan 24 02:53PM -0800 > So the probe must be trash but what could cause this behavior? > Thanks, > Eric   Sounds like it's AC coupled.

ggherold@gmail.com: Jan 24 02:54PM -0800 > So the probe must be trash but what could cause this behavior? > Thanks, > Eric   Hmm well I'm not much of a probe guy, but your probe has to be compensated for the input impedance (R and C) of the 'scope. It could be that the probe is not designed to work with the input of your scope. Is it a x10 probe?   George H.

ggherold@gmail.com: Jan 24 02:55PM -0800 > to repair it. There is no obvious damage. Could dropping it have > caused the problem? > Eric   Oh, it worked in the past? Or maybe you've never had a good square wave to check it with?   GH

tabbypurr@gmail.com: Jan 24 03:17PM -0800 > point where the curves are closest to flat I would expect to see 1.5 > divisions separation. but it's more like 1/5 of a division. > Eric   So if I guess correctly the probe is suffering poor hf response. Without any info from you on your test freq or the probe's specs what can one say? Some probes have very low f limits, and it varies greatly from x1 to x10.     NT

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