XTA DC1048 - Manual (Page 41)

Operator’s Manual DC1048 Integrated Audio Management Page 41
Non-Isolated Connection
If galvanic isolation is not required, then the GPI port can be used to provide its
own supply for the opto-isolators. In this mode, the common cathodes connected
on pin 11 must be connected to the chassis ground on pin 10. The +5V supply on
pin 9 is then used to trigger memory recalls by switching it to pins 5-8 as
required.
Simple Mode
The diagram above shows four switches connected individually to the four input
lines on the GPI. Simple Mode allows for the recall of four contiguous memories
triggered by pressing one of the four switches. These can be momentary as
shown, or may be latching if some form of feedback is required locally. By
default, the memories recalled will be numbers 01-04, but this can be changed by
adding an offset through GPI > Mem. Offset
Mem. Offset Mem. Offset Mem. Offset which will move the starting
number, so an offset of 2 will recall locations 03 – 06 and so on.
Non-isloated connection.
Connect pin 10 to pin 11 to
join grounds.
Momentary Action
Switch (Mem #01)