Installation - Lectrosonics AM16/12 Operating Instructions Manual

Because it is so highly integrated, the AM16/12 is straightforward to install. The following sections explain the
installation and wiring, as well as the software setup of the AM16/12.
AM16/12 Audio Inputs
Each of the 16 AM16/12 inputs is balanced, and pro-
vides 15V phantom power (through 2K ohm feed resis­
tors to the "+" and "-" input connections). Phantom
power is switchable on a per-channel basis. The draw-
ing to the right shows two examples of line level interface
with the AM16/12; one, an unbalanced line level source
and the other, a balanced line level source.
AM16/12 Audio Outputs
Each of the 12 AM16/12 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.
AM16/12 Programmable Inputs
The AM16/12 has 17 pro­
grammable inputs which can
control a variety of AM16/12
parameters. Each input can
respond to either a contact
closure or a continuous
voltage. The diagram to the
right shows common connec-
tions 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 AM16/12 Control Panel software for setting all programmable input parameters.
AM16/12 Programmable Outputs
The AM16/12 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 ground. When a
programmable output is "active", it
conducts current to ground. When
the programmable output is "inactive",
no current flows to ground. The maxi-
mum 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.
4

INSTALLATION

Pot Connection for Analog Control of Gain
10K Linear Pot
CCW
CW
+5V
To Programmable Input Pin
Gnd
LED is on when the programmable output is active
+5VDC (from Programmable Input
Pins 14, 17, 20 or 23)
Programmable Output Pin
Relay is on when the programmable output is active
Programmable Output Pin
Gnd (from Programmable Output
Pins 15, 17, 19, 21, 23 or 25)
Unbalanced Line Level Source
Input +
Input ­
Input Gnd
Contact Closure as Programmable Input
DC Voltage Source as Programmable Input
LED is off when the programmable output is active
+5VDC (from Programmable Input
Pins 14, 17, 20 or 23)
380 Ohms
Relay Coil 1N4001
Coil current <100mA or equiv.
Balanced Line Level Source
To Programmable Input Pin
Gnd
To Programmable Input Pin
0VDC (Off) to +5VDC (On)
Gnd
380 Ohms
Programmable Output Pin
Gnd (from Programmable Output
Pins 15, 17, 19, 21, 23 or 25)
External
DC Voltage
Source
(<40VDC)
Input +
Input ­
Input Gnd