Contemporary
Research
5
232-AMP+
Field Setup
All the parameters can be programmed via RS-232, but many can be set using the DIP switch on the bottom
of the case and the Gain potentiometer on the front panel
Select Input and Gain
1.
Stereo input = Switches 1 and 2 OFF
2.
Mono 1 = Switch 1 ON to
In 1
3.
Mono 2 = Switch 1 off
, switch 2 ON to
In 2
4.
Use GAIN pot to set gain for selected input
RS-232 Baud Rate
Set switch OFF for 9600 baud or ON for 1200 baud.
Status LED
The green LED will stay lit when the unit is powered and the output is active. A slow flash on the LED
indicates the amplifier is in standby mode (no audio input level, timed out to standby).
Mix/Ducking Operation
Inputs 1 and 2 can serve as mix or ducking inputs. Ducking means that, when audio on one input rises about a
trigger level, it will mute the other inputs. The 232-Amp+ allows you to set several parameters for automatic
ducking operation for both inputs.
Volume – This sets the gain level for the input.
Gate Threshold – Set the input audio level that triggers ducking .
Gate Hold Time – Sets how long the gate will be held open before checking the Gate level.
Ducking Level – Sets the volume level for the stereo input during ducking – the other mono input will
be muted.
Input 1 always has priority – use this input for audio from a paging system.