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Chapter 11—GPI Interface
DME32—Owner’s Manual
About the GPI Interface
The GPI (General Purpose Interface) allows remote interaction between DME32 func-
tions and custom-made controllers and other equipment. The DME32 features 16 GPI
inputs and 16 GPI outputs.
GPI inputs can be used to recall scenes and configurations or adjust component param-
eters. They can also be configured for use with Emergency mode, in which the DME32
mutes all outputs. The DME32 can be configured to switch a GPI output when a GPI
input is triggered, or to transmit a Program Change message when a scene or configu-
ration is recalled via a GPI input, or to transmit a Control Change message when a com-
ponent parameter is adjusted via a GPI input.
GPI outputs can be used to trigger other equipment when scenes are recalled or com-
ponent parameters are adjusted from DME Manager, front panel controls, GPI inputs,
or by using MIDI Program Changes and Control Changes. GPI outputs can be config-
ured so that they switch between high and low when a parameter is adjusted above or
below a specified threshold.
In a multiple-unit system, all GPI interfaces can be used, providing a maximum of 64
GPI inputs and 64 GPI outputs with four DME32s.
GPI Connectors
The GPI connectors are 16-pin
Euro-block sockets, which mate
with 16-pin Euro-block plugs.
The top connector contains the
IN terminals for GPI inputs 9
through 16 and +V terminals.
The second connector contains
the OUT terminals for GPI out-
puts 9 through 16 and GND
terminals.
The third connector contains
the IN terminals for GPI inputs
1 through 8 and +V terminals.
The bottom connector contains
the OUT terminals for GPI out-
puts 1 through 8 and GND ter-
minals.
The open terminal voltage of each +V terminal is 15 V and the maximum supply cur-
rent available from each terminal is 6 mA.
External controllers and other equipment can easily be attached to the GPI interface by
using Euro-block plugs. Simply insert the bare wire into the relevant hole and tighten
the adjacent screw. To prevent interference, use shielded cable and attach the shield to
a GND terminal.
9
10
11
12
13
14
15
16
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
IN
+V
OUT GND
GND
IN
+V
OUT
