Bedienungsanleitung Yamaha CBX-K1 (Seite 28 von 31) (Englisch)

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MIDI Data Format

■ MIDI Reception

● Merge-related Notes

MIDI messages received from an external device at MIDI

IN can be merged with the data generated by the CBX-K1,

and are transmitted as is from MIDI OUT. However, there

are some exceptions, as listed below:

* <<F4>>, <<F5>> and any subsequent data bytes will

not be merged.

* All Note Off message (<<Bn 7B 00>>) will not be

merged.

* When the CBX-K1 is set to send <<F8>> messages,

<<F8>> messages from an external device will not be

merged.

* When the CBX-K1 is not set to send <<F8>> messages,

<<F8>> messages from an external device can be

merged.

* <<FE>> will not be merged.

* When Merge is set to ON, and an <<FE>> message has

not been received for over approximately 600 ms, an

Active Sensing error occurs.

* With the exception of System Exclusive data, messages

not conforming to the legal byte format will not be

merged. System Exclusive data that doesn’t conform to

the legal byte format can be merged.

* If during transmission of System Exclusive messages,

the messages are cut off or interrupted (for over ap-

proximately 400 ms), a MIDI error occurs.

* When Merge is set to on, and RPN/NRPN messages are

sent from both the CBX-K1 and an external device

connected to MIDI IN, the resulting messages will be

mixed and corrupted.

* When Merge is turned off while a key is held, a stuck

note results. This is because the CBX-K1 simply turns

Merge off, without changing the Note On status.

During merging of System Exclusive data, all operations

from the CBX-K1 are ignored, and <<FE>> and <<F8>>

messages from the CBX-K1 will be stopped. This may

cause some problems, as listed below:

* Any operations executed from the CBX-K1, in the

middle of a System Exclusive message (<<F0-F7>>)

sent from an external device, are ignored. CBX-K1

operations that start before or end after the System

Exclusive message will be incomplete. To avoid this

problem, be careful not to execute operations from both

the CBX-K1 and the external device at the same time.

Also:

* If the Merge function is not needed, turn Merge off or

disconnect the MIDI cable.

* Do not operate the CBX-K1 during reception of large

System Exclusive messages, such as bulk dumps.

● Response of the CBX-K1 During MIDI Errors

When a MIDI reception error occurs (such as buffer full,

Active Sensing, interruption of System Exclusive, etc.), the

CBX-K1 responds as follows:

1. Merge is set to OFF.

2. The MIDI transmit/receive buffer is cleared.

3. Damper Off, All Note Off, All Sound Off messages are

transmitted over all channels.

4. Transmission of messages (including <<FE>> and

<<F8>>) are interrupted for approximately 0.8 seconds.

During this time, operations from the CBX-K1 are

ignored.

5. The B lamp flashes, indicating a MIDI error.

■ MIDI Transmission

1. Transmit Condition

MIDI IN <SW1> <SW2> <Filter>

Note on/off <<9n>> MIDI

Polyphonic key pressure *

<<An>> OUT

Control change <<Bn>>

All sound off <<Bn 78 00>>

Reset all controller <<Bn 79 00>>

All note off *

<<Bn 7B 00>>

Program change <<Cn>>

Channel pressure <<Dn>>

Pitch change <<En>>

System exclusive <<F0....F7>>

Timing clock <<F8>> <SW1>

Start <<FA>>

Continue <<FB>>

Stop <<FC>>

Active sensing <<FE>>

Arbitrary 1byte data <<xx>>

*1 This applies only to the highest note played.

*2 This is output only when a MIDI error (such as Active

Sensing or buffer full) occurs.

<SW1> When the CBX-K1 is set to send <<F8>> mes-

sages, <<F8>> messages from the CBX-K1 will be

output. When the CBX-K1 is not set to send <<F8>>

messages, <<F8>> messages from the CBX-K1 will not

be output, but <<F8>> messages from a connected

external device will be merged.

<SW2> When Merge is set to ON, the incoming data is

merged.

<Filter> This is Merge On/Off for each channel.

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