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6
Broadcast Tools
®
ACS 8.2 Plus Eight Input, Dual Output StereoMatrix Audio Control Switcher
DESCRIPTION
Controls:
• Headphone and VU meter monitor switch to select which output channel is
monitored.
• Headphone jack
• Headphone level control
• Input, Output, Fade, Dim, Mute and Program push buttons
Audio Inputs:
Each of the 8 stereo inputs are balanced bridging (20K
Ω
) at a nominal line level of
+4dBu. Multi-turn level controls are provided for each channel.
Audio Outputs:
The ACS 8.2 Plus provides two selectable balanced stereo outputs. Two balanced
monaural outputs are also provided which follow their respective stereo outputs.
The stereo outputs are adjustable.
Stereo 10 – LED VU Meters:
The ACS 8.2 Plus contains LED VU meters selectable between the two output
channels.
Silence Sensors:
Each output channel has a detector that monitors the sum of each stereo channel.
The factory default delay is set at 10 seconds, with a threshold of -37 dB, while the
restore time is set at 10 seconds. Upon silence delay detection, the “SS-1 or SS-2”
SPDT relays close for the duration of the silence and the corresponding (SS-1 or SS-
2) LED is lit for duration of silence. Serial data is sent on either the loss or restora-
tion of audio. The sensor may be programmed for:
• Number of seconds of silence that must be present before an alarm state is
reached.
• Number of seconds that valid audio must be present before an alarm state is
cleared (Restore).
Remote Control (GPI) Inputs:
Most front panel functions may be controlled with the 5-volt TTL/CMOS logic com-
patible, contact closure inputs.
PIP (GPI) Inputs:
The Parallel Input Port provides 16 parallel 5-volt TTL/CMOS logic compatible GPI
inputs. The inputs are pulled high to 5 volts through a 20K
Ω
resistor and are acti-
vated by pulling the input to ground. These inputs supply status to any serial polling
device (when the unit ID is set to 0, no polling of inputs is required).
