Pot Connection for Analog Control of Gain
Contact Closure as Programmable Input
DC Voltage source as Programmable Input
I
NSTALLATION
Because it is so highly integrated, the AS16x12 is straightforward to install. The following sections explain the installation
and wiring, as well as the software setup of the AS16x12.
AS16
X
12 A
UDIO
I
NPUTS
Each of the 16 AS16x12 inputs is balanced, and provides 15V
phantom power (through 2K ohm feed resistors to the “+” and
“-” input connections). Phantom power is switchable on a per-
channel basis. The drawing to the right shows two examples
of line level interface with the AS16x12; one, an unbalanced
line level source and the other, a balanced line level source.
AS16
X
12 A
UDIO
O
UTPUTS
Each of the 12 AS16x12 outputs is balanced, and outputs 9 - 12 may be set for line or microphone level output. To use an
output in the unbalanced line level mode, take the signal from the “+” output connection and the output ground. Leave
the “-” output floating. To use outputs 9 - 12 in the unbalanced microphone level mode, take the signal from the “+” output
connection and the output ground. In this case, you should connect the “-” output to ground. Be sure that the MIC/LINE
switch is in the MIC (down) position for the desired output.
AS16
X
12 P
ROGRAMMABLE
I
NPUTS
The AS16x12 has 17 programmable inputs which can control a variety of AS16x12 parameters. Each input can respond to
either a contact closure or a continuous voltage. The diagram to the right shows common connections to the programmable
input pins.
Each programmable input is internally pulled up through a 100K resistor to +5V, so no external pull up resistors are
necessary. When using a continuous voltage with one of the programmable inputs, the Function of the programmable input
must be set to either Analog In Control or Analog Out Control. See the Programmable Input tab in the AS16x12 Control
Panel software for setting all programmable input parameters.
AS16
X
12 P
ROGRAMMABLE
O
UTPUTS
The AS16x12 has 19 programmable
outputs which can indicate either
channel activity or the current state
of a programmable input. Each
programmable output is the electrical
equivalent of a contact closure to
g round. When a pro g r a m m a b l e
output is “active”, it conducts
c u rrent to ground. When the
programmable output is “inactive”,
no current flows to ground. The
maximum usable voltage for the
program-mable outputs is 40V, and
they will safely conduct up to
100mADC continuous. The diagram
on the right shows some typical uses
for the programmable outputs.
Unbalanced Line Level Source
Balanced Line Level Source
4
LED is on when the programmable output is active
LED is off when the programmable output is active
