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Hello-- My thanks go to everyone who inquired.

Just to clarify is that the entire Bee Documentation or everything except the Tek and HP stuff?

Is this in storage mode only? If so, then a fault in the display system could make almost any shape on screen through the vector generators. If the "X" seems too perfect, is it possible that it's

I've never seen anything resembling a cross on screen on any 223x scope, can you post a picture? ---In TekScopes@..., <stbarker123@...> wrote : Hi Does anyone have experience of this, and

I haven't come across any special precautions for removal but there are warnings (in common with your 2445) about not operating the scope with the case removed unless you use an external fan to cool

Yes, you'd have to cut the lines from the open-collector outputs to the LEDs, but I think the same logic principles will work. For example, if you place a PNP Q as a series switch between the 8T06

The 8T04/8T05/8T06 are Signetics equivalents of the 7447/7448/7449, with a different pinout. Hard to understand why they thought that was a good idea.

Iowa, huh? Didn't know there were any relatives living there either. ;-) Mark

TekScopes@...> wrote: If Artek Manuals don't have one for the 2220, there's a seller on ebay who does - #?331345358213. Not an outrageous price. They also do PDF versions. Malcolm

Actually, the JELD-WEN Wendts are from Iowa originally. They moved out to Oregon and started the business 50+ years ago. One of the sons, who is a contractor, is named Mark. You're in good company,

Regarding the U400, I've never pulled one of these. Are there any special precautions for pulling and/or reinserting these? I realize standard precautions for static, etc., but anything else? Thanks,

On 03/28/2016 09:06 PM, John Clark johnclark05@... [TekScopes] wrote: > Thanks for the link! I enjoyed watching that. I grew up on the Oregon coast, graduating HS in 1986, and lived there most

It's a Craigslist sale and I don't know the fellow; however, he does seem to know more than simply "it powers on but don't know much more about it than that". From the ad, I think he may have tried to

Hi Malcolm I couldn't find a manual, so have been using a 2230 manual which appears to have the same PSU and does not mention it. Stuart

I would not buy a replacement for U400 without making sure that yours is bad first. If you can wait while yours is tested, I'd send it to the Seller on eBay who sells them for $170. ?He will test

I have a 2465B in the process of being repaired. Mine displays all four channels, ch3 and ch4 display correctly but ch1 and ch2 distort as the vertical position is moved up and down. Square waves look

Hi, On the SG503, the 7 segment decoder output works by shorting the segment instead to switch them like the 7447. This is why it's more difficult. Look at the schematic, you can see that the segment

The photograph makes it look like the thickness is equal in the horizontal and vertical direction. http://40.media.tumblr.com/7d7cecc2c5fb418de6a1d0e21e997f4f/tumblr_o4b8x1NHM51rvbl5eo2_1280.jpg

Nixie and you are right and I am wrong; the 8T06 output is inverted. The idea is so weird that I though Signetics wrote the truth table strangely. It makes sense given that the IC is built on an all