is a multi-purpose stereo audio switcher and silence
sensor. It can be used to manually or automatically
select between two stereo audio sources.
can be used as a monitor-source switcher. When
interfaced to the console's mic-tally logic it
will sense when the control room mic is on, and
switch from "off-air" audio to a local audio source
to eliminate the "headphone echo" that is caused
by digital audio processing.
can also be used to automatically switch to a
"backup" audio source if the main source fails,
loses a channel, or if the audio level drops below
a preset threshold. Each of the two silence sensors
(L & R) has adjustments for setting the silence
threshold and delay time. If the main source level
drops below the threshold for the time set, the
silence sensor trips and the unit switches to
the backup source. When the main source returns,
the unit resets and switches back to the main
has an Alarm relay output to activate an external
alarm or other equipment. LEDs indicate which
audio source is active, when either channels audio
is below the silence threshold, and when the silence
sensor has tripped. The silence sensors can be
disabled (for manual control), as can the Alarm
relay (with automatic audio control still active).
Electronic audio switching creates a smooth transition
between sources. Gain trims are provided for precise
adjustment of audio levels.
uses plug-in euroblock connectors for audio and
control interface. The unit is 1/3 rack width
and can be rack-mounted with the optional rack
mount shelf, or cabinet or wall mounted using
optional cabinet/wall mounting brackets. AutoSwitch
is powered with a built-in AC power supply.