u/Chemical-Captain4240

I've got some equipment and folks want me to look into new control options. It's got to keep running, so I live splice into the control cable and find 6 conductors. Some are clearly power. I was expecting to find 1 pair in full duplex, but could not find anything that looks like a digital signal. Since the gear was working the whole time, it's me that is the problem.

My question is, do I need a proper differential probe to make sense of a duplex signal? I have a 2 channel scope, but only have ground referenced probes.

DC power and logic are my usual thing. So this sawtooth swinging positive and negative has me a little puzzled.

I am ordering spare lamps for a small space with s4s.

B&H has USHIO HPL575 at an attractive price. Thing is, the photos show a lamp with a cream colored base between the globe and the pins. I have never used this lamp with a cream colored base- only the plain old aluminum. Does anyone have experience or insight here?

EDIT: Thanks to everyone who posted. I ordered a 6pack of full ceramic base ushio hpl575 from B&H which is nuts because they are usually high-dollar, but not this time. When they come in, I will check them out and will update as we use them!

We have a small pond! For those of you that run uv filters, it's there a brand you can recommend?

What makes for your favorite mutton stew?