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The relay doesn't change state until you hit 200ns. It could still be bad but I don't see how it could create the behavior you are seeing. The good news is it is on a socket, you can easily pull it

K1242: They are well-known points of failure, which has been described several times, can't point you somewhere though. Have a look at TekWiki. Raymond

Sorry: 50 ns - 580 ns Raymond

I must have a failed relay in the B board. Any idea what these are? They are labeled tektronix but are they replaceable with something commonly obtainable?

A time/div, pulse length B gate (A and B interlocked): 1 ns - 75ns 2 ns - 80 ns 5 ns - 120 ns 10 ns - 120 ns 20 ns - 230 ns 50 ns - 58 ns 100 ns - 1.1 us 200 ns - 2.2 us 500 ns - 5.5 us 1 us - 11 us 2

What mine does is following 1 2 5 they get shorter 10 is reset to the length of 1 20 is reset to the length of 2 50 is reset to the length of 5 100 is again rest to the length of 1 200 is reset to the

From what I can see in your video, all B-gate times are ok from 1 ns/div down to 100ns/div. At longer times, B-gate is too long (belonging to 10x faster B-times). Raymond

Yeah, you used the 2467B (top one) for the latest video. I find the 2467B far less convenient for general use, especially re. brightness settings. Raymond

Hi Keith, Don't conflate my being didactic with being angry. Email is a lousy medium because the reader will attach an emotion track based on scant clues. That is a noisy, error-prone process. That

I have 2445B and 2467B I used 2445B thus far, less messing with intensity to take pictures

Just realised that's a 2467B..... Raymond

Gentlemen, First of all, in order to make life as easy as possible, it would help me/us if we would "standardise" our settings: - A-ramp at top - A-gate below that - B-gate below that again - Variable

Take a look at the posted pictures: /g/TekScopes/album?id=262059 Latest 5 pictures for B sweep in 1ns/div to 20ns/div. As expected no change in B-gate from 1ns/div to 2ns/div, then B

As far as I remember B-gate time stays the same from 1ns to 2ns (because of the reason I mentioned before) then increases at 5ns. I will look at what happens on my scope but I expect it should

https://youtu.be/pZ3s524OqTo Here is a odd thing I observing with B gate. Is this normal? Basically I expect the pulse to be shortest at 1nS and gradually widen. What happens here it basically goes in

Here is my attempt to explain in a real-world example the concepts of negative feedback and whether or not it lowers noise. The is for my buddy Keith. I came up with a simple real-world example of

B cannot rotate any further, it's rock solid against lock.

https://photos.app.goo.gl/rb7PqN5fkT6wTV9y5 I can replicate your picture at free running BNC cables 50Ohm termination

If the B-switch setting is faster than the B-knob indicates and the switch is mechanically blocked beyond the 1ns/div setting, it wouldn't be possible to set the B-speed switch to indicate 1ns/div. In

Hi Ondrej, Videos are very useful. I was surprised sweep and gate signals are not aligned but I think you are using different probes for each. Using a BNC cable for all of them will eliminate any