Comtech EF Data Vipersat SLM-5650A, Installation And Operation Manual

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SLM-5650A Satellite Modem
Revision 10
Front Panel Operation 7–15 MN-SLM-5650A
7.2.3.2 (CONFIG:) Rx
Rx: Demod DataRate Overhead Frequency
Acq Buffer Misc CnC Spreading (

E)
Use the

arrow keys to select an Rx configuration submenu. Press [ENT] :
Submenu Option
Demod Select FEC, Type, Rate, RS, Diff, or Descrambler.
DataRate Enter a selected data rate (see Appendix B. OPERATIONAL REFERENCES).
Overhead
Select the Overhead Type; view the Overhead Rate; select the Reed-Solomon Code Word;
set the Depth.
See Appendix J. OVERHEAD AND SYMBOL RATE CALCULATIONS for
information about Overhead bandwidth.
Frequency Select desired frequency and spectral inversion.
Acquisition Select acquisition range and reacquisition time period.
Buffer
Select buffer reference clock source, recenter, the buffer size, Bit mode or millisecond mode
and external Framing for Plesiochronous operation.
Misc Select Clk and Data Phase, BPSK Bit Ordering, and Eb/No Threshold.
CnC Select Mode, Acquisition, or SearchDelay.
Spreading
Select the Rx spreading factor and equation; view the Rx Chip Rate. This menu is selectable
only if the modem type has been set to LDPC.
Framing is applicable only when using externally framed data with the following formats: T1 or E1 G.704;
T2 G.743, G.704, G.707; and E2 G.742, G.704, G.745.