TR808-M MIDI Interface for Roland TR-808
M odel 8-4 48 ver. 3 .3 0
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Copyright © 2015 CHD Elektroservis. All rights reserved.
No part of this publication may be reproduced in any form without the written permission of CHD Elektroservis.
1. MIDI INTERFACE DESCRIPTION
The TR-808 MIDI retrofit enables your Roland TR-808 to be connected to MIDI host system. TR-
808’s sequencer can be synchronized with other MIDI devices. Also TR-808’s sound generators can
be launched via MIDI notes include their dynamics. TR-808 then works like polyphonic velocity
sensitive MIDI drum expander.
2. CONNECTION OF TR-808 TO HOST SYSTEM
TR-808 with installed interface can be connected to DIN-SYNC bus exactly the same way as
before the interface installation. More over, the instrument can be controlled from any MIDI transmitter
via MIDI commands.
Seven-pins connector on rear panel of TR-808 is used for connection to both DIN-SYNC and
MIDI buses.
2.1. CONNECTION OF TR-808 TO DIN-SYNC BUS
Pins number 1 to 5 of SYNC connector on TR-808’s rear panel are used for DIN-SYNC bus. For
connection, standard four-core shielded cable with 5-pin DIN connector on both ends of cable is used
– the connection is the same as before the interface installation.
Also all functions of DIN-SYNC bus stay the same. The bus works in both directions – required
operating mode (input / output) is selected by slide switch near the SYNC connector on TR-808’s rear
panel (see pic. 1 and 2).
Front view:
1 - DIN-SYNC Start / Stop
2 - COMMON (Ground)
3 - DIN-SYNC Clock
4 - DIN-SYNC Fill In
5 - DIN-SYNC Reset / Start
Pic. 1 – Connection of TR-808 to DIN-SYNC bus – OUTPUT mode
Pic. 2 – Connection of TR-808 to DIN-SYNC bus – INPUT mode
DIN-SYNC IN
OUT
1 4 2 5 3
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