So I brought a AB168 second hand to use as a stage box for my QuSB, and it refuses to connect
The Unit lights up as expected
The AB168 connection LED shows that it is linked
The QUsb connection LED flashes at a DIFFERENT RATE!
The channel and top right shows its connected
But the PATCH shows N/C – BUT Snake show connected
A very good presentation of your problem!
Are you sure it worked for the previous owner?
When you look in the dSnake sockets, does everything look OK?
Have you already tried another cable, maybe also a short one?
A&H write: “Use STP (shielded twisted pair) Cat5e or higher cables.”
Is your cable like this?
Can you send a picture from the patch window showing the entire screen?
On the patch screen with an ab168 connected it will only show main 1 to 16.
You need to place a connection point blue dot on row 17 on the left hand side with the ab168 channel intersection point then hit apply.
Coincidentally I’ve used my Qu-SB with my AR2412 this evening and I had the different frequency of yellow lights blinking also. Worked fine 
Giga
Wow, that’s good to know, you would not think that would be the case ~ Thank you
AB168… 16 inputs, channel 17 has no input because the first 16 are patched and than there is no input left to patch it.
To use all 32 channels on the QU SB you would need to start patching Main 1 to Ch 17, Main 2 to Ch 18 following that all the way to Main 16 to Ch 32.
Attached is your picture with darker blue dots showing how it would look.
I don’t understand; is this different from using and patching the AR2412 then ? I go inputs 1 to 16 on my Qu-SB as always and then add inputs 17 to 32 into the AR2412. If needed I can “double patch” f.i. input 10 Qu-SB to also be available on AR2412 input 30.
Giga
Using just the 2412 gives you a total of 24 remote inputs, the QUSB will process a total of 32 channels, so you would need to use 8 local mic inputs to have a total of 32 mic inputs.
With a 2412 connected the pact screen would show Main 1 to 24 available.
From a stage box input you can patch that to any or all of the 32 channels on the QUSB.
You can also patch a stage input to the stereo input and have another mic channel.
The surface inputs on the QU series are fixed and can not be patched, only selected between the local input or from the stage box.
Patching in the patch menu picture above does not automatically patch the stage box input to a mixer channel, you do that in the source select menu from the channel pre amp control menu.
I’ve got it working now, The bit that I did not get was that the extra inputs from the AB168 are patched in first when using the QUsb
