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Randall V2/T2 MIDI Amplifer Receiver Functional Details On power-up only the Mute output will be on, the other five outputs will be off. The MCU will then quickly check the EEPROM flag bit to see if it’s the first time being powered, if so it will proceed with initializing the EEPROM, if not the MCU will then check to see if the Channel Select/Pgm.
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EEPROM Memory This MIDI receiver will have non-volatile EEPROM memory (130 bytes will be required - either onboard the MCU or a separate IC) so all user data will be saved when power is removed, without the use of a backup battery. The MIDI receiver will always perform a very quick check of an EEPROM flag bit, on power-up, to see if it’s the first time it is being powered up, such as during production testing…...
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Control Change #60 (w/Control Value 0 = off & 127 = on) allows for “Instant Access” of the Graphic EQ. Control Change #61 (w/Control Value 0 = off & 127 = on) allows for “Instant Access” of the Mute Output. Randall V2 MIDI Pedal Functional Details On power-up all five LED’s will turn on and remain on for 2 seconds (to allow the end user to verify they are functioning...
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Pressing the Channel 3 switch will cause the following to be transmitted via the MIDI output jack; MIDI Control Change #58 with a Control Value of #127 on MIDI Channel 1 (selects channel 3 on receiver) MIDI Control Change #59 with a Control Value of #000 on MIDI Channel 1 (turns FX Loop off on receiver) MIDI Control Change #60 with a Control Value of #000 on MIDI Channel 1 (turns Graphic EQ off on receiver) The above three messages will be re-transmitted on MIDI Channel 2, then 3…...
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