SmarTrunk Systems ST-9116C, Service Manual, Page: 28 / 67

ST-9116C SM R 1.1 SMARTRUNK SYSTEMS, INC. 28
Figure 31: FSK Modulation Level Alignment Screen for
Wide band Channels
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
wide 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 corresponds to 3.3
KHz 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.
5.6.19. RX CLOCK ALIGNMENT:
To align the RX clock for Repeater,
please select:
Adjust Clock RX
option Alignment screen.
Figure 32: RX clock Alignment
Actual alignment value will be
displayed on alignment slider.
Evenly when this is an RX
parameter, as it uses the same
equipment
configuration for
measurement. Then we have
included it into this section.
Disconnect the service monitor
from the TX jack and install a
dummy load to protect the
transmitter
from unexpected
transmissions.
Select the most sensitive input of
your service monitor and load an
antenna there.
The repeater will transmit a very
weak signal from RX stage to be
detected with your spectrum
analyzer or service monitor.
Press [Start] then move the slider to
reach the desired value at the time
you checks the Frequency Counter
to reach the desired frequency as
shown on Frequency field of the
alignment screen.
As soon the desired value is
reached, press [Finish] to store the
value on repeater memory.