SmartTrunk Systems ST-2112D, Service Manual, Page: 20 / 55

ST-2112D SM R 1.2 SMARTRUNK SYSTEMS, INC. 20
5.5.6. TDMA DATA MODULATION
alignment:
To align 4FSK signaling deviation
for TDMA mode, select TDMA
Deviation on Alignment screen.
Actual alignment value will be
displayed on alignment slider.
Press [Start] then move the slider to
reach the desired value at the time
you check the deviation meter to
reach the desired signaling level for
narrow band operation. Radio will
generate a 1000Hz reference tone
for alignment proposes.
As soon the desired value is
reached, press [Finish] to store the
value on radio memory.
If you want to retrieve factory
default, press [Factory] instead of
[Start]. You will be asked to confirm
the factory default alignment, and
then if you confirm it, original
values from factory will be loaded
into current alignment settings.
5.5.7.
EIA tones Level Alignment:
EIA signaling generated by ST-2112
must be aligned by selecting EIA
Tones Level alignment option from
the alignment menu.
Actual alignment value will be
displayed on alignment slider.
Press [Start] then move the slider to
reach the desired value at the time
you check the deviation meter to
reach the desired signaling level for
narrow band operation. Radio will
generate a 1000Hz reference tone
for alignment proposes.
As soon the desired value is
reached, press [Finish] to store the
value on radio memory.
If you want to retrieve factory
default, press [Factory] instead of
[Start]. You will be asked to confirm
the factory default alignment, and
then if you confirm it, original
values from factory will be loaded
into current alignment settings.
5.5.8. DTMF signaling level alignment:
DTMF signaling generated by ST-
2112 must be aligned by selecting
DTMF Level alignment option from
the alignment menu.