Gai-tronics IPE2500A, IPE2500A-MLS Paging Encoder / Desktop Co Bedienungsanleitung PDF herunterladen (Seite 55)

IPE2500A and IPE2500A-MLS Paging Encoder/Desktop Controller Installation

49 03/12

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 RX audio output of the radio tone panel or ITA2000 is 0 dBm, and the telephone

system has 10 dB of line loss, the desk set 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.

MONITOR

Restores the previously programmed setting.

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.

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Gai-tronics IPE2500A, IPE2500A-MLS Paging Encoder / Desktop Co Bedienungsanleitung Seite 55