2
INTRODUCTION
Welcome to the
GPIM-16
- GPI to MIDI unit. The
GPIM-16
is very easy to use, but please take a few
moments to read through the manual to avoid any operational difficulties.
CONNECTIONS
MIDI In
This is provided in order that you can ‘daisy chain’ several boxes together. Any data received at the
MIDI In socket is merged with any new data generated from the GPI inputs and everything is then sent
to the MIDI outs 1 & 2. There is no limit to the number of GPIM-16 units that can be daisy chined
together as the data is re-generated rather than being merely copied.
DC IN 9V
Plug the power adapter into here. The unit will take an adapter with an output of 9V either regulated or
unregulated. The socket is a 2.1mm type with centre positive and is compatible with with locking type
plugs. Do not use an adaptor with an output voltage higher than 9V, and the
GPIM-16
must not share
an adaptor with any other device. Failure to observe this will invalidate your warranty, and will probably
damage the other device, the
GPIM-16
and/or the power supp
ly.
MIDI out 1 & MIDI out 2
MIDI out 1 and MIDI out 2 carry identical MIDI information. The second output is provided so that data
can be set to a backup computer system at the same time as supplying the primary computer.
DISPLAY
The display has several functions; In normal operating mode, the display will show three horizontal
bars until a GPI input is received, it will then show a number between 1 and 16 to indicate the GPI input
which was activated. Note that if two inputs are received in quick succession, it will show the later one.
After a couple of seconds, the display will revert to the three dashes display. In this mode, the dots
above the display will indicate MIDI In and MIDI out activity.
The display is also used for editing, which will be dealt with later.
USING THE GPIM-16
Connect your GPI inputs to pins 1 to 8 of the 9 pin D connectors – pin 9 is the ommon ground
connection. Connect any other MIDI source to the MIDI input and connect the power supply.
When power is applied to the
GPIM-16
, the words
KENTON GPIM
will scroll across the display, then
three horizontal bars will show, indicating that no GPI input has recently been received.
The factory default settings are listed on the last page.
Various parameters can be edited and stored – see the section on editing for more information.
The GPIM-16 also contains a MIDI analyser – see the MIDI analyser section for more information.
Connections for the GPI inputs are on 9 pin D connectors. Below is the view looking at the back of the
unit and is the same view as looking at the solder connections of the corresponding plug.
Pins 1 – 8 are the input pins and pin 9 is the common ground connection. The input pins are internally
pulled up by 4K7 ohm pullups to +5 volts. Shorting an input to ground (pin 9) activates that input.
5
2
4
3
9
1
8
7
6
