GPMXGPMX-16 16 MIDI to GPOs and 16 GPIs to MIDI Operating manual
INTRODUCTION Welcome to the GPMX-16 - GPI to MIDI unit. The GPMX-16 is very easy to use, but please take a few moments to read through the manual to avoid any operational difficulties. CONNECTIONS DC IN 9V Plug the power adapter into here. The unit will take an adapter with an output of 9V either regulated or unregulated. The socket is a 2.1mm type with centre positive and is compatible with locking type plugs.
When the required value has been set, either press the mode button again to select another parameter, or press the edit button again. This will return you to normal operating mode again. Whenever you return to Parameter mode the settings you have changed will be saved. Settings are stored in non-volatile EEPROM memory. Note also that the GPMX-16 will continue to function normally during the edit process, except that the display will not indicate an activated input.
PULSE LENGTHS When the pulse length parameters show a data value from 1 to 250 then only a MIDI ON message is required as the output will turn itself off again after the specified time. If they show ‘oFF’ then the outputs will remain on until an OFF message is received. The time shown is approximate in milliseconds. INPUT & OUTPUT CONNECTIONS Connections for the GP Inputs are on the lower pair of 9 pin D connectors.
Although pitchbend and after-touch are not strictly controllers, when Controller number [Cn] mode is selected, ‘pb’ will be displayed if a pitchbend message is received, and ‘af’ will be displayed if an aftertouch message is received. If Controller value [Cv] mode is selected, and pitchbend or after-touch messages are received, their values will be displayed.
FACTORY DEFAULTS If you wish to reset your GPMX-16 to factory defaults, you can do so by turning the power on whilst holding down all three push buttons (mode, dec & inc). This will return the GPMX-16 to it’s default settings. ‘Fd’ (factory defaults) will momentarily be displayed when this has been done. DISPLAYING THE FIRMWARE VERSION NUMBER Power the unit on while holding the ‘INC’ button pressed.
