Roland SBX-1000 - Manual (Page 3)

■ GPI Command
This is a trigger pulse signal which controls such operations
as “off," “play” and “stop" of certain types of professional
equipment.
There are different types of GPI commands, such as open
collector (corrector), relay and TTL The SBX-1000 employs
an open corrector type GPI command.
I MIDI ■flilill
This is the abbreviation for “Musical Instrument Digital
Interface," a worldwide standard for the exchange of
musical performance data and other data among various
electronic instruments. MIDI conveys musical performance
“actions", such as the playing of keys and the pressing of
pedals, as MIDI data.
Musical performance data can be transmitted and received
among instruments of different manufacturers as long as
they are compatible with the MIDI standard.
The data which is sent and received according to the MIDI
standard is called MIDI data.
■ MIDI Terminals
MIDI data is sent and received over the following three
kinds of terminals. MIDI cables are connected to these
terminals depending on the application.
f ^ f
MIDI IN: For receiving data from other MIDI
instruments.
MIDI OUT: For sending internal data.
MIDI THRU: For retransmitting the data received by the
MIDI IN terminal.
The SBX-1000 has no separate MIDI THRU terminal;
instead, there is a “Soft THRU” function which uses the
MIDI OUT terminal for retransmitting the data received via
MIDI IN.
■ MIDI Channel PBiW
Different information can be sent to several MIDI
instruments over a single MIDI cable. This is possible
through the use of MIDI channels.
MIDI uses sixteen channels, numbered 1 to 16, and MIDI
data is sent to the connected device whose receiving
channel matches the transmit channel of the transmitting
device.
It is necessary to match the channel of the sound source
instrument with the channel of the event when registering
an event in the cue sheet.
■ MIDI Sync Data (MIDI Sync)
This data allows MIDI sequencers and rhythm machines to
be played in perfect synchronization. Nearly ail MIDI
sequencers and rhythm machines are capable of receiving
and transmitting this data.
• MIDI Song Select Data (F3H) ■MB!
This data is used to select song numbers. It is sent
before the song is started.
• MIDI Song Position Pointer Data (F2H) |2|511
This data is used to set the location from which the
song is started. The location is indicated in units of
16th notes (or 6 clocks). The data is sent before the
song is started.
• MIDI Start Data (FAH) HSU
This message sets the condition in which playback is
started from the beginning of the song. (Actual
playback starts with the timing clock data.)
• MIDI Continue Start Data (FBH) |QQ|
This message sets the condition in which playback is
started from the current location of the song. (Actual
playback starts with the timing clock data.)
• MIDI Timing Clock Data (F8H)
This data is sent every 1/24 of a quarter note and
controls the playback tempo.
• MIDI Stop Data (FCH)
This data stops playback.
IBIIÜ 1
O Cue Sheet Operation
When the cue sheet is played, the above messages
are sent to the selected MIDI output at the
corresponding SeqStart and SeqStop events, (cr p.30
“Manual I ”)
IMI midi liiJCue sheet I TEMPO Tempo controller terms ^Sequencer ternis