Aphex Systems 1788a Expanding the SysEx String, 4 1788A-R’s Odd Midi I.D, Daisy-Chained 1788A-R’s

R/C Manual 2. USING MIDI

2.2.3 Expanding the SysEx String

Just like direct MIDI control, you can repeat 3-byte commands within the parametric SysEx string to send multiple commands to a single 1788A as shown by figure 2-7.

Fig. 2-7. Expanding the SysEx String

SysEx Start	Aphex MIDI I.D.	1788A-R MIDI Channel	Placeholder1	1788A NET Number
		xx	xx	xx
F0	00 00 38

Put Up To 64 3-byte Commands Here

Command	Mic Channel	Value	Command	Mic Channel	Value	Command	Mic Channel	Value	SysEx End
xx	xx	xx	xx	xx	xx	xx	xx	xx	F7

NOTE: You cannot expand the 2-byte MIDI Preset string.

2.2.4 1788A-R’s Odd MIDI I.D.

All 1788A-R units are I.D.’d a little differently than normal MIDI devices or the 1788A’s direct MIDI port. There is no recognition of the MIDI Device byte, although it must be present as a placeholder in the SysEx string. Any value may be used. The MIDI Channel is responded to normally.

Refer to Section 3 to learn how to set up the MIDI Channel on the 1788A-R.

2.2.5 Daisy-Chained 1788A-R’s

When you daisy-chain units by using the MIDI THRU ports, every unit will recognize the SysEx strings addressed to its MIDI channel. Each unit will analyze the NET Number contained in parametric strings and redirect any commands falling within its own bank, ignoring all others. If a 2-byte MIDI Preset command is received, the targeted 1788A-R will propagate its prescribed preset to its own Bank of 1788A’s.

2.2.6 Preset Recall Strategy

Each 1788A-R is given a different MIDI channel number. MIDI controllers can then command a preset from any one or combination of 1788A-R’s. Combinations can have different preset numbers assigned to create complex constellation presets. The MIDI controller will transmit a series of 2-byte MIDI Preset commands, one to address each 1788A-R.

Refer to Section 3 learn about the 1788A-R’s stored presets and how they are

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