User Interfaces
DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem
4-6
TM065 – Rev. 3.3
Data Invert:
{Normal, Inverted}
Allows the user to invert the data.
IDR OH Type:
{Voice, 64Kbit}
Available with 96 Kbps (IDR) Framing.
Symbol Pair:
{Normal, Swapped}
Available in BPSK Modulation.
ReedSolomon (menu):
ModRS Enable:
{Enable Disable}
Allows the user to enable or disable the Reed-Solomon
Encoder.
ModRS Codes:
{Any valid n/k values can be entered (refer to
Appendix A)}
Displays the currently used n, and k Reed-Solomon
Codes. In Closed Net Mode, custom RS Codes may be
selected.
ModRS Depth:
{4, 8}
Displays the currently used Reed-Solomon Interleaver
Depth. In Closed Net Mode, a depth of 4 or 8 may be
selected.
4.2.3 Demodulator Menu Options and Parameters
Demod Mode:
{IDR, IBS, D&I, Closed Net}
Used with IDR, or IBS Interface Only.
Sets a number of parameters within the modem to meet
a set specification. The purpose is to eliminate
keystrokes and potential compatibility problems.
Additionally, data rates not covered by the given mode of
operation will not be allowed. If the mode of operation is
selected after the data rate has been entered, then the
data rate must be compatible with the desired mode of
operation or the mode will not be allowed. The following
parameters are set for the given mode of operation:
IDR Mode:
(IESS-309)
Data Rates:
1.544, 2.048 (Mbps)
Framing Type:
96 Kbps (IDR)
Scrambler Type:
V.35 - IESS
Spectrum Mask:
Intelsat
IBS Mode:
(IESS-308)
Data Rates:
1.544, 2.048 (Mbps)
Framing Type:
1/15 (IBS)
Scrambler Type:
IBS
Spectrum Mask:
Intelsat
Summary of Contents for DMD2401 IBS
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