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A16: MEMORY PROTECT
This function turns the DX21 MEMORY PROTECT function ON or OFF. When
ON, the internal RAM voice memory cannot be altered using the STORE, INTERNAL
MEMORY LOAD, or CASSETTE LOAD functions. The MEMORY PROTECT
function does not affect the voice edit buffer, so the INIT VOICE, EDIT RECALL,
INTERNAL MEMORY LOAD SINGLE, and CASSETTE LOAD SINGLE functions
will operate whether MEMORY protect is ON or OFF.
When this function is called the LCD will read either "Mem Protect:ON" or "Mem
Protect:OFF", according to the current state of the MEMORY PROTECT function
(MEMORY PROTECT is automatically turned ON each time mains power to the
DX21 is turned ON). The DATA ENTRY ON and OFF buttons are used to turn
MEMORY PROTECT ON or OFF.
6. MIDI Functions
This group of functions deals with parameters which control the transmission and
reception of MIDI data via the DX21 MIDI OUT and MIDI IN terminals. This section
will describe how each parameter is programmed, while actual operational details
will depend entirely on the type of MIDI equipment with which the DX21 will be
used.
A3: MIDI ON-OFF
This function turns transmission and reception via the DX21’s MIDI terminals ON
or OFF. When ON the DX21 can transmit or receive MIDI data to or from external
MIDI equipment. When OFF, no MIDI data interchange is possible.
This function is turned ON or OFF using the DATA ENTRY buttons.
A4: RECEIVE CHANNEL
The DX21 is capable of receiving data on any of the 16 available MIDI channels,
or in the OMNI mode which enables reception on all channels simultaneously.
This function is used to set the desired MIDI receive channel or activate the OMNI
mode. The receive channel is normally set to match the transmission channel of
the MIDI equipment from which the DX21 will be receiving MIDI data.
Data is entered using the DATA ENTRY control or buttons, and the data range is
from "Midi Omni: ON” (in this state the OMNI mode is ON) to "Midi Recv Ch =
1" through "Midi Recv Ch = 16".
A5: TRANSMIT CHANNEL
The DX21 can transmit MIDI data on any of the 16 available MIDI channels. This
function is used to set the desired transmission channel. The transmission channels
will normally be set to match the receive channel of the MIDI equipment to which
the DX21 will be transmitting data.
Data is entered using the DATA ENTRY control or buttons, and the data range is
from 1 to 16.
A6: CHANNEL INFORMATION
This is the MIDI channel information “switch”. It turns transmission and reception
of all MIDI BASIC EVENT DATA and OTHER EVENT DATA (except for key event
data, which is always transmitted when the MIDI ON-OFF function is ON) ON
or OFF. This function is turned ON or OFF using the DATA ENTRY ON and OFF
buttons.
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