User`s guide

Rear Panel 21
Rear
Panel
The table below shows the binary combinations possible, and what file they
select:
8 4 2 1 File
Off Off Off Off None
Off Off Off On 1
Off Off On Off 2
Off Off On On 3
Off On Off Off 4
Off On Off On 5
Off On On Off 6
Off On On On 7
On Off Off Off 8
On Off Off On 9
On Off On Off 10
On Off On On 11
On On Off Off 12
On On Off On 13
On On On Off 14
On On On On 15
For example, connecting pins 8 and 27 together with the DIP switch set in the
contact closure position will cause file 8 to run.
The loop input is
read when playback
begins, not at the
end of the file.
The file will be looped if the loop command is asserted when the file is
triggered. If the file is a Playlist, all clips will be played and then the file will
loop.
The file select inputs may also be strapped to automatically play a file on
powerup. That file number takes precedence over any autoexec files that may be
on the removable hard drive (see Power Up Operation). If an autoexec file
exists and the loop input is strapped, it will play continuously until the unit loses
power.
The simplest possible configuration is therefore to connect four switches to the
unit’s four file select lines. These switches will play files 1, 2, 4 and 8. (The
missing file numbers need not exist.) Fifteen switches may be connected without
an external controller, by using a diode matrix. One side of each switch is
connected to a wire that goes to signal ground. The other sides of the switches
are connected through signal diodes, such as a 1N914 or 1N4148, to the file
select inputs.