Lectrosonics AM16/12 Operating Instructions Manual page 13

16 Channel Automatic Matrix Mixer
Update AM16/12 Firmware from Disk File - Allows newer firmware revisions to be loaded into the AM16/12. From
time to time, new features or bug fixes will be added to the AM16/12's firmware. These changes will be distributed
with the LecNet installation disks and available on the Lectrosonics Web site (www.lectrosonics.com). The firmware
file will have a ".s19" extension. When installing from the installation disks, the firmware files will automatically be
placed in the LecNet directory (default: c:\lecnet). If new firmware is downloaded from the Web site, the file should
be placed in the LecNet directory.
Any time the AM16/12 Control Panel is run, it will check for .s19 firmware files which are more recent than the
firmware revision in the AM16/12. You will be alerted that the AM16/12's firmware can be updated, and you can
select whether or not to let the update proceed. If no firmware file is available in the LecNet directory, this option will
be disabled. The shortcut key for this option is Ctrl+U.
Exit - Ends the application. The shortcut key for this option is Ctrl+X.
Important note: If you will be using the Room Combiner functions of the AM16/12, proceed to the instructions for
the Room Combining Tab on page 23.
Input Gain Tab
The Input Gain tab allows the
input gain, Auto/Direct status, and
the NOM bus association to be
set for each of the 16 input
channels.
Gain - Allows the input gain level
to be trimmed between +15dB
and -63dB, or Off. The gain
shown in the associated box
should be added to the preamp
gain (set by rear panel dip
switches) to calculate the total
channel gain. For example, if the
rear panel dip switches for an
input are set such that the
preamp gain is +30dB, and the
input gain box shows +5dB, the
total gain applied to that input
channel (excluding matrix
crosspoint and output gain) would
be +35dB. The background color
of the input gain box will change
from white to red if the input is
muted by actuation of the Mute
Input function of a programmable
input. The input gain scroll bar will also be disabled while the channel is muted.
Short Cuts:
A left mouse click on the gain box will set the input gain to 0dB, while a right mouse click will set the input
gain to Off.
Auto/Direct Input Status - Each input may be in either Auto or Direct mode. An input in the Auto mode responds to
the NOM bus to which it is assigned to determine its instantaneous gain. An input in the Direct mode is always on
and never has any gain reduction applied to it from the automatic mixing action. An input in the Direct mode will,
however, contribute to the NOM bus to which it is assigned. In most cases, inputs connected to microphones should
be set to Auto mode. Direct mode is useful for line level sources.
NOM Bus - Sets the NOM bus association for each input. The AM16/12 has 8 NOM busses, and any input may be
assigned to any NOM bus, or to "None". All inputs assigned to the same NOM bus act like a single automatic mixer,
in that their instantaneous gains are determined by the relative signal levels on all other inputs assigned to that NOM
bus. By assigning inputs to different NOM busses, more than one "virtual mixer" may be constructed. As a simple
example, you might assign inputs 1-8 to NOM bus 1 and inputs 9-16 to NOM bus 2. If inputs 1-8 were then sent to
output 1 and inputs 9-16 were sent to output 2 (using the Matrix tab), you would have two separate 8 input automatic
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