DEVICE PARAMETERS
(labelled NOM) enabled will reduce the gain of the output signal by 3dB for each doubling of the number of open microphones. NOM attenuation is computed sepa- rately for each output, depending on the inputs that are used to build each output. The output levels will be displayed in
LOGIC INPUT
The LOGIC INPUTS page allows the user to assign individual logic input pins to trigger specific functions, macros, or complete presets. The types of functions that can be executed include any function that can be controlled with an RS232 command such as changing or ramping gains, muting, enable/disable the AEC, set AEC Mode, choose AEC Reference, enable/disable AGC, set AGC Max, set AGC Rate, enable/disable Noise Cancellation, set Noise Cancellation Level, set Mic or Line Level, or turn Phantom Power On or Off. Within Conference Composer, the Logic pins also have an LED associated with them to indicate the status of the contact closure.
A logic pin can have one of the following states: unassigned, assigned to a particular function, macro, or preset, or assigned to one of four groups. To assign a function to a pin, single click and hold on the pin of the connector and select a colored assignment of the pin from the colored boxes that appear. Figure 15 shows the selection process – match the colors with the legend to create an assignment entry for either the single pin or the logic group.
Figure 15. Selecting a type of assignment for a logic pin
Once a pin has been assigned, there are three states associated with the pin: activated, deactivated, and held. To assign a function to one of these three states, right click in the cell, and then pick the function off the list. Alternatively you can type the associ- ated RS232 command in directly. Clicking the SHOW ACTUAL COMMAND button translates the command to the actual RS232 command.
You can also change the polarity of the pin by right clicking on the pin number. This will cause an underline to appear under the pin number. When the polarity is changed, what normally happened when the command was activated (i.e., contact was
Conference Composer User Guide | 18 | Technical Support: 800.932.2774 |