Routine Operation
3-77
SCM4000
Operator’s Guide/Tech Ref Manual
A maximum of four Demodulator Data Channel interface options
can be configured by the factory. The Data Channel interface
options can consist of any combination of the factory setting
options. The configured system will depend upon the actual
radio system and the Data Channel interfaces desired.
Note
ASI 2, DS3 2, and E3 2 Data Channel interfaces
are not available in the SCM4000 Demodulator/
Decoder configuration.
Data Channel interface options can consist of, but are not limited
to, some of the following examples, based on your particular
system requirements.
•
Three ASI channels and one T1/E1 channel
•
One ASI Channel, one DS3/E3 channel, and two T1/E1
channels.
•
Two ASI channels, one T1/E1 channel, and one Eth
channel
•
Two ASI channels, one SMPTE channel, and one T1/E1
channel.
Note
Main Screen menus for SCM4000 configurations
containing the Demodulator option vary according
to hardware options installed in the unit.
to view the Main Screens
for all configurations of the SCM4000.
Demodulator options for each SCM4000
configuration are identical, therefore the Main
Screens shown in the following procedures is
typical.
Monitor/Change Symbol Rate Settings
The procedure required to monitor and/or change the symbol
rate settings from 0.0 to 20.2 MS/s is contained in the following
steps. Refer to the
“Symbol Rate Calculations” Appendix on
to determine bit rate vs. symbol rate vs. QPSK,
16QAM, 32QAM, and 64QAM modulation rates and bandwidth.
1.
Verify the SCM4000 is powered up.
2.
Verify the Main Screen is displayed.
. If the Main Screen is not displayed, press the
ESC
key repeatedly until the Main Screen is
displayed.
Figure 3-200: Main Screen Menu - Typical
3.
Press the Down arrow key, as required, to move the
>>
cursor to the
System Menu
option.
4.
Press the
SEL
key or Right arrow key and observe the
System Menu
.
Figure 3-201: System Menu - Typical
5.
Press the Up or Down arrow key, as required, to move
the
>>
cursor to the
Preset Menu
option.
SCM4000
>> Demodulator
System Menu
System Menu
>> Preset Menu
Active Errors
Error Log
Содержание SCM4000
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