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You mentioned you had it open and looked at the power supplies. What did you see? It looks like something has about a one Hz period. Probe through the trigger board, the vertical amp board, etc.

I have been searching posts,and with google and I can't seem tofind the answer,My 465 scope seems to be working properly except for some sparkles,artifactsn,and reflections on the screen,intensity and

Came through 4 times Sent on the TELUS Mobility network with BlackBerry

Here's a new video that could help. http://youtu.be/5W90wzlM7yc or http://www.youtube.com/watch?v=5W90wzlM7yc&feature=youtu.be

Here's a new video that could help. http://youtu.be/5W90wzlM7yc or http://www.youtube.com/watch?v=5W90wzlM7yc&feature=youtu.be

Here's a new video that could help. http://youtu.be/5W90wzlM7yc or http://www.youtube.com/watch?v=5W90wzlM7yc&feature=youtu.be

Here's a new video that could help. http://youtu.be/5W90wzlM7yc or http://www.youtube.com/watch?v=5W90wzlM7yc&feature=youtu.be

2 allows more OT. Go ahead and post there also since the two are relatively separate. Don't have a SC504. Is your manual same as this one? http://bama.edebris.com/manuals/tek/sc504/ Else ask Dave,

Sorry, David, I was looking at the A Sweep Generator when I wrote that. I was referring to R371 and D372, collectively across the C-B junction of Q373. Dave Wise

I'm amazed at the life of these Dallas parts (16 years or more?). I designed in a number of Dallas parts in the 1990 timeframe. They started to lose data retention about 7 to 8 years later. The

Not in a real company, Craig.That is why there are company part numbers. When a new number is established, approved vendors are listed and if that list needs to be updated, that is done through

I have a very nice SC-504 80 MHz scope mounted in the right hand 2 slots of a TM-504 . It has worked well for me for years. However, I recently turned it on and the scope trace will not resolve to a

I thought that resistor was for snubbing any oscillation when a low impedance is present at both the base and emitter since the 2N2207 is not slow. 47 ohms in series with a base is not usually

I agree. Looks like the 2SA1145 is the best fit so far. Good find! - George ________________________________ To: "TekScopes@..." <TekScopes@...> Sent: Wednesday, October 10,

Do the following: use the 1KHz square wave signal from the calibrator in either channels. If the trigger starts decently but with the sinusoidal wave at the same frequency not, one of tunnel diodes in

Looks like it could be a great deal if you can comply with the amazingly strict pickup rules... http://www.ebay.com/itm/271074610383

It gives same readings at 120Hz for capacitance if it can measure it (>100uF). For 10-100uF range the most accurate results are at 400 Hz. 1KHz is a convenient test frequency giving wide range with

I have no affiliation with the seller. http://sfbay.craigslist.org/nby/ele/3329948072.html -Kurt

Hi René, Your findings confuse me a little. If you say the cycle time is 20% too much, I suppose one cycle occupies about 1.2 div. But then 12.5 div would contain just over 10 cycles, while you say

You have more data than I. But consider the application. It has to generate a 70V step, as fast as possible, but the most important part is the last little bit, otherwise the trace will be dim at the