SP Studio Systems SP-12 - Manual (Page 73)

MIDI, SYNC & SMPTE
© E-mu Systems, Inc. 1985 Page 73
Enhanced by The Emulator Archive 2002 www.emulatorarchive.com
6B BACKGROUND: SYNCHRONIZATION
The SP-12 can synchronize to one of several different tempo references: Internal
clock, external click track, MIDI timing messages, or SMPTE time code. It can also
generate (write) a click track or SMPTE time code signal on tape. Once recorded,
these signals can feed the SP-12 during overdubs to maintain synchronization with
the original tempo.
The SP-12 can also serve as a master timing reference (MIDI, Click, or SMPTE) to
which other instruments may synchronize. The different sync protocols are selected
when the SYNC module is activated.
6C INTERNAL SYNC (SYNC 1)
1. To select internal sync, activate the SYNC module and key in 1. In this
mode, the SP-12 serves as the system master timing reference, at a
rate set by the Tempo function (see Sections 10 and 3H).
A continuous click signal is always present at the SMPTE OUT jack; it
is used mainly for recording a click track on tape (Section 6H). To
send a click output from the SP-12 while it is in segment mode to
another device, program the metronome for a click output (see Section
1P). This click output signal appears at the MET OUT jack, and starts
and stops as a segment is started and stopped using RUN/STOP.
2. To send a click output from the SP-12 while it is in song mode,
program the Click output as described in Section 3K. Note that MIDI
timing signals are generated at the MIDI out jack in song or segment
mode, so the SP-12 can serve as a MIDI system master and generate
a Click output when internal sync is selected.
6D MIDI SYNC (SYNC 2)
1. To select MIDI sync, activate the SYNC module and key in 2. In this mode,
the SP-12 can serve as a system master timing reference, at a rate set by the
Tempo function (see Sections 10 and 3H); MIDI timing information is sent out
the MIDI OUT jack.
2. The SP-12 can also slave to MIDI timing information coming in the MIDI IN
jack. It is not necessary to press RUN/STOP when running from MIDI, as
MIDI systems should include start and stop commands as part of the MIDI
data stream. When slaved to a MIDI device, the MIDI OUT jack echoes
whatever is coming in the MIDI IN jack.