The termination is not required for the low and medium frequency compensation which is just as well if a x10 probe is used because then adjusting the x100 attenuator in a 465B requires a high level si

This is important. You can ignore the attenuator compensation to start off with by working only with the 5mV/div range where all of the attenuators are switched out. If you cannot get the transient re

For what it is worth, the woman was based on Marilyn "Fuzzy Pink" Niven from the time that I assume he was dating her. https://tvtropes.org/pmwiki/pmwiki.php/Main/WriteWhoYouKnow There was a close lin

I remember them but thought they were more than a diode.

Were those failures of actual Cree manufactured bulbs or just bulbs which use Cree LEDs? My latest test is with Cree manufacture red bulbs.

The part I find annoying is now I have to qualify new parts from someone else which means going through a lot of datasheets. I wish someone had at least picked up the HP/Avago parts. One advantage of

I got all of my Scope-Mobiles from the vacuum tube era and a 203 with the TM500 shelves this way. Given how heavy the 500 series oscilloscopes are, having a Scope-Mobile for each one is well worth it.

At least where I am now near St. Louis, voltage spikes kill incandescent, LED, and CFL bulbs about equally with a half life of about half a year so less expensive incandescent bulbs (or passive ballas

Using a diode in series works well for porch lights which do not need to be as bright anyway. The effect on operating life is much greater than the effect on efficiency and brightness: https://en.wiki

The recent series Chance with Hugh Laurie had a Tektronix 465M or 465 variant in the back room of the antique furniture shop for some reason. They were using stories from actual science fiction writer

And we have modern replacements for sampler diodes in the form of low voltage low capacitance microwave mixing diodes. Although Avago (old HP and now Broadcom) has discontinued theirs, they are still

Tektronix never did this but I think someone on the list may have done it so a search through the archives may reveal something. I know we discussed various options for the ADC and display because I w

Not necessarily at the same time. A hot air gun works well for initially trying to peel the label up and also works with new tape to try and pull up any adhesive residue. And I don't now that naphtha

A hot air gun and naphtha (lighter fluid) are my first choices. Lighter fluid and hardware store naphtha may have contaminates so purer options are heptane or Bestine Solvent and Thinner which is used

Didn't the 1GHz 7A29 vertical amplifier also take advantage of the 50 ohm BNC connector?

The only common issue is age. The capacitors wear out, zener diodes become leaky, etc. If there was just a short in the oscilloscope mainframe, then the power supply would operate in "tick" mode so th

Displaying only on the middle 1/3rd of the screen is normal when the beam finder function is used. It is designed to do that in case the trace would normally be off of the screen. The beam finder also

Oh, that is the holdoff circuit. I thought I was looking at part of the horizontal timing circuit. Accuracy of the holdoff circuit is not critical so an aluminum electrolytic capacitor will be fine. N

Displaying only on the middle 1/3rd of the screen is normal when the beam finder function is used. It is designed to do that in case the trace would normally be off of the screen. The beam finder also

Start by measuring the level and ripple on the low voltage power supply outputs.