Cat output on v 1.5

my v1.5 does not have either side of the cat output jumpers shorted yes the previous owner used it. Am I missing something? Can tha CAT work this way? tnx Don

If you don’t see any solder on the surface then it’s likely that your unit is in the default (logic levels) configuration. There are connections from center pads to CMOS side using the existing PCB traces under the black solder mask.