12
aci707 Audio Control Interface Rear Panel Controls & Functions (continued)
The rear-panel DIP switch provides a variety of setup options.
DIP Switches 1 & 2 – microphone/transmitter button function
A soft-touch mute button on the front of each SpectraPulse
™
mtu101 Boundary Microphone
Transmitter offers four choices of switching modes: toggle mode; push to talk; push to mute;
and button disable. DIP Switches 1 and 2, located on the rear panel of the Audio Control
Interface unit, are used to select the desired mode.
To achieve the desired switching mode, change the DIP switch configurations to match the
following diagrams:
Toggle Mode
(press on/press off). Switches 1 and 2 in “up” position. Touch the soft-touch
button on the front of the microphone/transmitter once to turn the microphone/transmitter
on; touch again to turn off. (This is the factory setting.)
Push to Talk
(momentary on). Switch 1 “up”; Switch 2 “down”. Microphone is on only while
the button is being pressed.
Push to Mute
(momentary off). Switch 1 “down”; Switch 2 “up”. Microphone is off only
while the button is being pressed.
Button Disable.
Switches 1 and 2 “down”. This position bypasses the mute function, so
that the soft-touch button on the front of the microphone/transmitter does not function. In
this mode, the audio channels are only muted from an external source via the control input. This
mode is necessary when using the system with an echo canceller that must see the audio
signals at all times. The echo canceller may use the contact closure connections (see below) to
mute the channels externally.
DIP Switch 3 – “Local/Remote” control function
For applications that require the microphone to remain active regardless of the soft-touch
button function setting, a “Local/Remote” control function is provided.
Local
function. Switch 3 “up”. The audio output is controlled internally by the soft-touch
button on the microphone. (This is the factory setting.)
Remote
function. Switch 3 “down”. The microphone/transmitter audio output will remain
active or “on” all the time unless muted by an external source. Control outputs are unaffected
by this position.
DIP Switch 4 – high or low channel addresses
Two aci707 Audio Control Interface units may be linked together to use a total of 14 channels
of audio output. When linking two units, set DIP Switch 4 on the first unit to channels 1-7, and
on the second unit to channels 8-14, as follows:
Channel 1-7, Switch 4 “down”. (This is the factory setting.)
Channel 8-14, Switch 4 “up”.
DIP Switch 5 – active or passive mode
Active mode.
Switch 5 “up”. Allows the Audio Control Interface unit to send data back to
the transmitter. (This is the factory setting.)
Passive mode.
Switch 5 “down”. In this position it will not send data back to the transmitter.
This mode is used when two Audio Control Interface units will be used to decode the same
transmitter signals for redundant purposes. In any typical installation each decoder will be set
to active mode.
DIP Switch 6 – Line or Mic level
Depending upon the audio electronics input for your system, you may select the output level of
the aci707 to be either “Line” or “Mic” level. A light illuminates on the front panel of the aci707
to indicate whether the unit is operating with Line or Mic level output.
Mic Level.
Switch 6 "up". (This is the factory setting.)
Line Level.
Switch 6 "down".
DIP Switch Configuration Settings
6
1 2
1 2
1 2
1 2
3
3
4
4
5
6
6
5
