GAI-Tronics ITR2000A Tone Remote Deskset User and Installation Manual - Manual (Page 25)

ITR2000A Tone Remote Desk Set Installation
21 02/12
F2 – Line-in Sensitivity (Receive)
After entering the main programming selection mode, press
F2
to adjust 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 ITA2000A is –10 dBm and the phone
system has 10 dB of line loss, the ITR2000A line-in sensitivity should be set to level 4 (−9 dBm) to
accommodate the 10 dB of incurred line loss.
After pressing
F2
, the
F1
through
F4
LEDs light to indicate the current line-in sensitivity level setting.
As the setting is changed, the
F1
through
F4
LEDs indicate the new value. The desk set buttons provide
the following functions when used in the Line-in Sensitivity mode:
Button Function
VOLUME
Up Increases the line-in sensitivity or reduces the pre-gain for the line input.
VOLUME D OWN
Decreases the line-in sensitivity or increases the pre-gain for the line input.
TRANSMIT Saves the current setting and exits back to the main selection mode.
MONITOR Restores the previously programmed setting.
IC Exits the Line-in Sensitivity Adjustment mode without saving the selection, but
maintains the current setting until power is cycled. This is useful for experimenting
with different settings.
Refer to the Line-in Compensation table below for an explanation of how the LED lighting pattern
indicates the levels.
Line-in (RX) Compensation
Level F1 LED
is:
F2 LED
is:
F3 LED
is:
F4 LED
is:
Line-in
Compensation
1 OFF OFF OFF OFF 0 dBm
2 OFF OFF OFF ON −3 dBm
3 OFF OFF ON OFF −6 dBm
4 OFF OFF ON ON −9 dBm
(factory default)
5 OFF ON OFF OFF −12 dBm
6 OFF ON OFF On −15 dBm