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100nsec per div and faster sounds like the switch from real time sampling to equivalent time interpolation (300Msample/sec real time). You can turn off the equivalent time mode by going to the Acquire

Hi, I own the HC100 plotter with the RS232 option. I'd be happy to swap this for the GPIB option if anyone out there has one they don't want. Sorry I don't know the part # -- it doesn't seem to be in

Q141, sheet <11> coordinates E2. The other transistor in the clamp is Q41, coordinates E5. Dave Casey

Thank you for the suggestion Dave, I'll have a look at where the power supply points are located in the manual and see if anything seems out of spec when I'm next able. And in response to Albert, you

Szabolcs, from here (TekScopes) posted a method of accessing the internal battery of the Dallas NVRAM modules using a heat gun and a scraper. The difference in these modules was that there were two

Not your current problem but I replaced the NVRAM chips in my 2440 and the scope doesn't work.? I switched one of them back and still no joy.? I will try the other one. I probably got some

I picked up a 2440 on ebay that had the dead nvram battery problem. Got that fixed up with an external battery. Ran thru the self cal and ext cal and all seems fine, except when the sweep rate is

from Tim P (UK) Does anyone (Hakan?) have the documents detailing the conversion between rack / bench formats ? they are 040-0583-02 and 040-0584-03 I don't see how to do it without unsoldering the

Slight correction. From the manual, it appears TP60 (et. al.) has a 28uS period making that about 38kHz instead of 30kHz. Thanks, Barry - N4BUQ

you can just throw in a completely blank chip in there, no problem reading the old chip and writing in the new one doesn't do much and doesn't do any harm either as I have learned...specially now that

As far as I know, there is no menu accessible way to see the battery condition on the THS720. I think that got added to the THS730, but that may be wishful recollection on my part. One usability issue

Hello all, a TDS3054 (built in year 2001) shows the following symptoms when connected to power: - 'A system error has occured', Error Count =11, 'display error', goes away after short power off/on -

Harrison, If you suspect the multiplier is bad, you can disconnect its input by unsoldering the wire to the transformer. You can see that in the the picture of the HV board that I added just now here:

Hi Tim! Thanks for your response. I think my question wasn't straightforward - I'm looking for pictures from this special cart combinded with the DEC minicomputer. Holger

From Tim P (UK) I don't know if you have seen the P7001 section on TekWiki - it's under 7000 series, as it uses the 7704A. Lots of pictures of the 'guts' of the P7001 and some stuff on the

Hi Harrison, Yes, the 3x multiplier is U550. For mine, even after I replaced it, I did some testing on it and, at lower voltages, it would triple the input voltage; however, it appeared that at

Hi! I've added an old picture of a Tektronix DPO/DEC PDP 11/05 combination on a 202D cart to the photo section: /g/TekScopes/photo/252847/0 Has one of these machines survived? I'm

I have -151 ready, just waiting for "permission"(?) to upload. Good OCR and size reduced to 196MB with little quality degradation. Non-reduced is also available, almost same size as before. Raymond

In circuit tests of these components will be quite meaningless because of the low impedance components connected to them and the other semiconductors connected across them, such as CR556 across Q556

Barry; When you stated you replaced the multiplier, are you saying you replaced the U550 module? Harrison N1FAM