GAI-Tronics ACC2500 Audio Control Center - Manual (Page 31)

ACC2500 Audio Control Center Installation
27 09/08
Program the desk set’s line level to achieve adequate deflection of the VU meter of the AMI. Refer to the
following table for these settings:
Line Output Adjustment Table
Setting Line Level (600-ohm)
03 -10 dBm
07 -5 dBm
0C 0 dBm
18 +5 dBm
2D +10 dBm
PB2 - Line-In Sensitivity
After entering the main programming selection mode, press the PB2 button to allow adjustment of the line-
in sensitivity. This adjustment allows the desk set to compensate for a range of 0 to 15 dB of line loss in 3
dB increments. The compensation is considered a pre-gain to the line-in circuitry of the desk set.
For example, if the audio from the AMI is 0 dBm, and the audio line has 10 dB of line loss, the line input
sensitivity should be set to level 4 (-9 dBm) to accommodate the 10 dB of incurred line loss.
After pressing the PB2 , the display indicates the current line-in setting. The buttons function as follows:
Button Line-in Sensitivity Mode Function:
VOLUME Up Decreases the line-in sensitivity or reduces the pre-gain for the line input.
VOLUME Down Increases the line-in sensitivity or increases the pre-gain for the line input line.
TRANSMIT Saves the current setting and exits back to the main selection mode.
DEACT Restores the previously programmed setting.
TIME Exits the line-in sensitivity mode without saving the selection, but maintains the current
setting until the power to the unit is cycled. This is useful for experimenting with
different settings.