As an aside, the Mem/Pulse switch on your probe represents "memory" and pulse. In Mem mode, a single pulse will cause the pulse LED to light and stay on. In Pulse mode, the pulse LED should flash for every logic transition leading edge.

As an example of use, if you wanted to know whether a switch activates intermittently while playing a game, you might use the "Mem" mode. If you're looking for a steady strobe or a clock, you would use the "Pulse" mode.

That makes me worry a little about your probe. In "Mem" mode, the pulse light should lock on almost every time you touch a circuit, regardless of the voltage.

Let's straighten out your logic here:

In
9 - 0,54
10 - 4,50
Out
8 - 0,71 Vdc

In
12 - 0,54
13 - 4,50
Out
11 - 0,32 Vdc

In
1 - 0,54 Vdc
2 - 4,50
Out
3 - 0,32

These are all AND gates, which means input one high AND input two high will create a high out. All other conditions will read low. All of these gates are reading as I would expect.

It seems as if the edge detection circuit in your logic probe is not working. I would suggest either have someone with more experience check it and see what they think, or replace it.

As for your problem, you may want to start a new thread with a "System 11 Lamp Matrix" title, and work through the problem that way.

That's a good starting point. The experienced System 11 guys will jump in and walk you through the steps for troubleshooting. In this thread you have a couple of guys who are comfortable with logic probes, but neither of us have a lot of System 11 experience.