Aphex Systems 1788a Using Midi, Direct Midi Control, Procedure for Setting The Numbers

R/C Manual 2. USING MIDI

2. Using MIDI

2.1 DIRECT MIDI CONTROL

MIDI control can be piped directly to a 1788A’s MIDI Input port from any suitable controller. Suitable controllers are devices such as mixing or lighting consoles or stand- alone MIDI controllers that have programmable physical controls such as pushbuttons and sliders which can send SysEx strings to a MIDI port.

Fig. 2-1. Direct MIDI Control Hook-up

						Next
	MIDI Out
		In	Thru	In	Thru
MIDI Controller		1788A		1788A

2.1.1Determining Channel & Device Numbers Channel & Device

You will need to establish channel and device numbers on your 1788A’s. The objective is to choose channel and device numbers that are not used by any other MIDI devices connected to the controller’s MIDI output port. If your 1788A constellation is the only thing on the controller’s output port, then you can take channel 1 for all 1788A’s and give them each a unique device number. The device numbers don’t need to be sequential or contiguous, but they need to be unique. You will need to know these numbers in order to identify which preamp you want to access when programming the MIDI controller later on, so write down this information when you set up your 1788A’s.

2.1.2Procedure for Setting The Numbers

1.Place the 1788A in Local control.

2.Press Mode to select MIDI.

3.Press Set I.D. to select Ch. (Channel)

4.Press Adjust/Store. It will light up.

5.Set the displayed number using the Adjust dial.

6.Press Set I.D. to select Dev. (Device)

7.Repeat step 5.

8.Press the Adjust/Store button again. It will store the new numbers and the button light will go off.

Fig. 2-2. 1788A Control Panel

Ch_01

dn_03 Device

nn_03

Net (Irrelevant with direct MIDI Control)

NOTE: With direct MIDI control there will be no LAN connection. Therefore the NET number is irrelevant and can be set to anything.

Refer to section 4.2 of the 1788A Instruction Manual for more information about setting the Channel, Device, and Net numbers if you are experiencing difficulty.

2.1.3 1788A’s Direct MIDI SysEx Strings

Direct MIDI SysEx strings are exactly the same as the parametric strings used for indirect MIDI control (described later). When filling in the three bytes in the grayed area, refer to reference data at the end of this chapter. See figure 2-3.

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