Comtech EF Data SLM-5650A Installation And Operation Manual page 123

(CONFIG:) Rx  DataRate
Rx Data Rate:
Sym Rate:
Use Method 1 or Method 2 to enter the desired Rx Data Rate (in kilobits per second):
Method Procedure
Use the number keypad and enter the desired data rate (see Appendix B. OPERATIONAL
1
REFERENCES).
Use the  arrow keys to scroll through and select the desired data rate or symbol rate. When
2
scrolling through the data rates, the symbol rate is automatically recalculated and displayed.
When entering the data rate, the following interactions need to be taken into account:
•
•
•
(CONFIG:) Rx  Overhead
Rx: Overhead:None
RS-CW:N/A
Use the  arrow keys to select Overhead, Rate, RS-CW, and Depth. Press [ENT]. For each
option, use the  arrow keys to scroll through the available settings. Select your setting. Press
[ENT] to finish.
Option
Overhead (IESS-308, IESS-309 are standard; AUPC is optional).
96 kbps (IESS-308); 1/15 (IESS-309 or AUPC); N/A
Rate
RS-CW Reed-Solomon Code Rate, N/K: 126/112; 194/178; 208/192; 219/201; 220/200; 225/205.
Depth De-interleaving depth: 4; 8; 16
Some selections will only be visible if the modem is set to a compatible mode, or if an option
is installed or enabled.
Front Panel Operation
020000.000 kbps
0266666.666 ksps(E)
If the modulation type selected is 8PSK, 8QAM, or 16QAM the minimum data rate allowed
is 256 kbps.
When changing certain parameters like modem type, the data rate will default to 64 kbps
or 256 kbps.
The calculated symbol rate is displayed for the user. This is helpful for determining the
occupied bandwidth required for the selected modulation type, code rate and overhead
Rate: N/A
Depth:N/A (E)
See Appendix J. OVERHEAD AND SYMBOL RATE CALCULATIONS for Overhead
rate information.
Settings
(none).
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SLM-5650A Satellite Modem
Revision 10
MN-SLM-5650A