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doepfer

System A - 100

Bus Access A-185

1. Introduction

Module A-185 (Bus Access) enables the user to have

access

to the

internal system bus

of the System

A-100. This is an active connection, with booster

amplification (see fig. 1), to maintain correct levels for

CV and gate signals, and to avoid the signal losses

and consequent problems that a simple passive link-

up might cause.

The gate and CV inputs on the A-185 are used to

patch external gate and/or CV signals into the

A-100 system bus; while the internal system bus CV

and gate signals are available at the gate and CV

outputs of the A-185. Two LEDs provide a visual

indication of the signals.

fig. 1: patching an external CV into the system bus

A-185

Bus Access

Gate

Out

Gate

Out

Systembus

CV- Leitung

CV In

(Front-

platte)

CV Out

(Front-

platte)

Aufholverstärker

Summary of content (8 pages)

PAGE 1
System A - 100 doepfer Bus Access A-185 1. Introduction A-185 Bus Access Gate In Gate Out Module A-185 (Bus Access) enables the user to have access to the internal system bus of the System A-100. This is an active connection, with booster amplification (see fig. 1), to maintain correct levels for CV and gate signals, and to avoid the signal losses and consequent problems that a simple passive linkup might cause.
PAGE 2
A-185 Bus Access System A - 100 doepfer 2. Overview Controls: A-185 BUS ACCESS Gate In Contr. system bus gate indicator LED 2 Contr. : system bus CV indicator LED In / Outputs: Gate Out ! Gate In : Gate Out ", § Gate Out :outputs (internally linked) for whatever gate signal is present on the internal system bus CV In § CV In : Contr. CV Out CV Out 2 ➀ 1 Contr.
PAGE 3
doepfer System A - 100 Bus Access A-185 3. Controls 4. In / Outputs 1 Contr. ! Gate In LED indicator 1 shows the state of the gate signal on the system bus. Use gate input ! for patching in external gate signals. " Gate Out 2 Contr. LED indicator 2 gives a visual indication of the CV present on the system bus. • § Gate Out The two internally linked gate outputs " and § provide access to any gate signal present in the internal system bus.
PAGE 4
A-185 Bus Access System A - 100 5. User examples Creating a common system bus for an A-100 with more than one 6U rack system If your System A-100 fits into just one 6U rack, and you want to connect up the upper and lower system busses so that their CV and gate signals are linked, you can usually just connect them internally with the optional A-100BC cable (see the A-100 main system manual, chapter 3, page 10).
PAGE 5
System A - 100 doepfer A-190 MCVS MIDI-CV/SYNC INTERF. MIDI Thru Group A-185 Bus Access A-185 A-185 BUS ACCESS BUS ACCESS Gate In Gate In Menu Dec./Group Perform. × Ø CV 1 LFO Frq. Clock Glide Offset Assign Scale Arpeg. Retrig. Contr. Clock Gate Out Gate Out Reset Gate Out Gate Out CV In CV In Config. Channel Bend W. Contr. MIDI In Inc./+ Gate Contr. Contr. CV 1 CV Out CV Out CV 2 CV Out CV Out CV 2 A-185 BUS ACCESS Gate In Contr.
PAGE 6
A-185 Bus Access System A - 100 6. Appendix Module A-185 has two internal jumpers on its circuit board, which are factory-set to send external CV and gate signals to the system bus (see fig. 1). By re-aligning these jumpers, you can convert the A-185 so that it doesn’t take gate and CV signals from the input sockets, but simply ‘reads’ them from the system bus, and sends them out to the front panel CV and gate output sockets.
PAGE 7
doepfer System A - 100 Bus Access A-185 7. Patch-Sheet The following diagrams of the module can help you recall your own Patches. They’re designed so that a complete 19” rack of modules will fit onto an A4 sheet of paper. Photocopy this page, and cut out the pictures of this and your other modules. You can then stick them onto another piece of paper, and create a diagram of your own system. Make multiple copies of your composite diagram, and use them for remembering good patches and set-ups.
PAGE 8
A-185 Bus Access 8 System A - 100 doepfer