Yamaha 24N DME64N/24N V2 Owners Manual - Page 32

GPI Connection GPI (General Purpose Interface) device (GPI controller, etc.) can be connected to the rear-panel [GPI] connectors. Using GPI a variety of control signals can be transferred between the DME64N/24N and external controllers or other devices. The optional CP4SW, CP4SF, and CP1SF control panels are also connected via GPI. NOTE For more information on the CP4SW, CP4SF, and CP1SF control panels refer to "CP4SW, CP4SF, and CP1SF" in the Appendix of this manual (page 52). The DME64N provides 16 channels of GPI input and output, and the DME24N provides 8 channels. Each channel has an IN terminal, a +V terminal, an OUT terminal and a GND terminal. The +V terminals have an open-terminal voltage of 5 volts. The IN terminals can detect a full range of input voltages from 0V through 5V, while the OUT terminals output either signal "L" or "H" at a TTL level. The parameters for each GPI input and output are assigned via the DME Designer application. NOTE The DME Designer can be used to set up the system so that scene recall operations and user parameter control can be carried out from connected GPI control devices. Refer to the DME Designer manual for details. Euroblock connectors are used for all GPI input and output connections. Euroblock connection methods are described in "Euroblock Connection" on page 26 in this manual. Example: Controlling the DME64N/24N from a switch. GPI Connection IN +V Example: Controlling the DME64N/24N via a 10k ohm linear taper potentiometer. GPI Connection IN +V GND Example: Lighting external LED indicators from the DME64N/24N. GPI Connection OUT GND Continuous potentiometer Max. 16mA Make sure that the current between the OUT and GND [GPI] connectors CAUTION is less than 16mA. NOTE GPI connector calibration procedure is described on page 52 of this manual, in the Utility display GPI page. Connecting to an External Device 32 DME64N/DME24N Owner's Manual