User manual

Easysound Audio Imagestore User Manual
Page 144 Miranda Technologies Ltd
Output from GPI
A GPI port may used as an output and its active status is defined by the
output being internally pulled to ground by a Darlington configured transistor
such that an active low will be represented by +0.7V.
Lamps or relays attached to an output GPI may use the GPI +12V supply (pin
8) but the maximum current drawn from this supply should not exceed
500mA.
Where a GPI output is used to drive a relay coil, reverse voltage protection
diodes should be incorporated in the circuit to protect the Imagestore from
voltage transients.
GPI Control of Audio Model Shuffle
Shuffle values allow mono input channels to be moved around within an
output group. In this way pair swaps, mono to stereo copies, and other audio
manipulations can be achieved.
Each output channel can take its input from one or many of the input
channels and each input can be copied to multiple output channels.
A familiar set-up is such: