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When troubleshooting analog sampling systems, I've found that it is most efficient to start with the timing circuitry. I don't worry about sampling gate until after I confirm that the timing circuitry

I meant for connecting to the 340 volt peak supply which is typical on capacitor input switching power supplies. 120 volt AC input power supplies use a voltage doubler to get to 340 volts DC. As

I have a red 250 MHz x10 Chinese probe rated to 1.2 kVolts and they are not kidding about the voltage rating; 2 kVolts will cause it to break down. It does deliver a 1.4 nanosecond rise and fall time

I find that setting the display mode to "man" (manual) mode simplifies things. TekScopes@...> wrote: [Non-text portions of this message have been removed]

Sampling scopes have DC offset, which may be a multi-turn or a coarse/fine control.This could drive the trace way off screen.Does it behave the same in both plugin slots ? Since you said you were not

I have one, I use it with a 485. Pretty satisfied with it. I consider it "basic equipment". I have taken it up to 2.6KV working on Z axis circuits with no ill effects. I see them with higher voltage

wrote:

On a flyback supply that is the truth, yes. Up to 800V Mosfets, are not uncommon. Apart from the voltage rating, x10 may mean no more than 50V/DIV on some scopes, making it completely impractical to

"... adequate for 240 VAC work which is unlikely to produce higher than +/- 340 volts DC...." Erm, guys, if these are switched mode supplies on a 240V system, when the switching transistor switches

from Tim P (UK) re the difficulty triggering these beasts, I have four - one works perfectly, one 'sort-a-works' with a fast trigger, one is very iffy and the other one has never worked, and is

Hmm, Windows Update is temporarily (?) broken, at least for some people: http://www.msfn.org/board/topic/173049-windowsmicrosoft-update-not-working-on-windows-2000xp2003/ Automatic updates seem to be

On 11/19/2014 12:07 PM, David DiGiacomo telists@... [TekScopes] wrote: . . . \POSReady So, is that a Microsoft update for the point of sale crowd that is still supported? If so, neato!

Type this in a command window: reg add HKLM\SYSTEM\WPA\POSReady /v Installed /t REG_DWORD /d 1 /f Then run Windows Update/Microsoft Update as normal.

Someone mentioned still using WinXP and updates to it that are available, even though Microsoft has abandoned it. Where to look?

Thanks Kurt, interesting data! Albert

yes, I too thank you for the heads up, and have ordered the kit. Can you tell me how it does as a ESR meter? "Having sex is like playing bridge. If you don't have a good partner, you'd better have a

Free Tek 585A (s/n 009721) on cart. It was working last time I checked but needs some TLC. It is complete, free to anyone who can pick it up. You must take cart also. I have no time to devote to this

It's important to point out that sampling plug-ins drive the horizontal display of the scope. Make sure it's connected to the scope the right way. There's a free run setting for the trigger. I haven't

Congrats on finding your issue. I guess if panos' 2445 has the same issue, a quick way to diagnose it would be to measure the DLY_REF line resistance ground and the -1.25V "rail". The easiest way to

I see a cable with a toroid on it and the connector is hanging loose. It is near the high voltage lead. I will find out where it goes. Could it be THIS simple?