SmarTrunk Systems ST-9116C, Service Manual, Page: 20 / 67

ST-9116C SM R 1.1 SMARTRUNK SYSTEMS, INC. 20
5.6.4. ANALOG MAXIMUM DEVIATION
FOR WIDE BAND
Maximum deviation for analog
signals modulated from ST- 9116
can be aligned by
Max. Dev. (25.0 Khz)
alignment
option form the
alignment menu.
Figure 17: Analog Wide band Max Deviation Alignment
Actual alignment value will be
displayed on alignment slider.
Press [Start] then move the slider to
reach the desired value at the time
you checks the deviation meter to
reach the desired signaling level for
narrow band operation. Repeater
will generate a 1000Hz alignment
reference
tone for alignment
proposes.
As soon the desired value is
reached, press [Finish] to store the
value on repeater memory.
Default value has been set to a right
value, which correspond to 5 KHz
Max deviation for Wide band
channels
(25.0Khz channel
bandwidth).
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
5.6.5. FDMA DATA MODULATION
ALIGNMENT:
To align 4FSK signaling deviation
for FDMA mode (6.25Khz channel
bandwidth), select
FDMA Deviation
on Alignment screen.
Figure 18: FDMA Deviation 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 checks the deviation meter to
reach the desired signaling level for
narrow band operation. Repeater
will generate a 1000Hz alignment
reference
tone for alignment
proposes.
As soon the desired value is
reached, press [Finish] to store the
value on repeater memory.
Default value correspond to 1.1
KHz deviation for Ultra Narrowband
channels
(6.25Khz channel
bandwidth).