I am wondering if a single ss420x a/d converter can handle signals for more than one hplc. Our lab in Costa Rica (getting service engineers there is costly) has Class VP 7.4 software with a Shimadzu SCL-10Avp system controller and older detectors for which we must use the analog signals. We recently added another SCL-10Avp for another system and the software is communicating with it.
I have ss420x channels 1, 2, and 3 for the detectors of the first hplc system and channel 4 for the second. I have the start relay on the first hplc connected to Start 1 on the ss420x and I thought I could put the second hplc start relay on Start 4. I was able to do a Baseline Check in the Class VP software, but the start trigger for an injection did not work, so when I made an injection the system did not collect the signal.
Shimadzu tech support gave me conflicting answers whether or not this would work, so if anyone has experience setting up this type of system please reply.