GAI-Tronics ACC2500 Audio Control Center User 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.