I just picked up an HP 1631D logic analyzer on eBay. I don't have it yet, but it was 60 bucks (plus shipping), was advertised as working, and coming from a working environment. It's in many ways inferior to the cheap, 8 channel, Chinese knock-off Saleae clone I have, but it has way more channels, and it tickles my old gear soft spot. Current project is a 6502 single board computer build, and testing it with era appropriate great seems perfect.
In skimming the manual PDF, I see it differentiates between "timing" and "state" channels. Best I can tell is that the state channels require an exterior clock source, whereas the timing channels are asynchronous.
What are the limitations, advantages, purposes, ect, of the two types of channels?
It will come with two "pods" for timing channels, and , 3 for state channels. In the pics, it appears each pod has 8 channels, so any way you cut it, I have a lot more channels than the fake Saleae.