Table of Contents
Advertisement
User Interfaces
Data Invert:
IDR OH Type:
Symbol Pair:
ReedSolomon (menu):
ModRS Enable:
ModRS Codes:
ModRS Depth:
4.2.3 Demodulator Menu Options and Parameters
Demod Mode:
4-6
DMD2401/DMD2401L/DMD2401 IBS/IDR Satellite Modem
{Normal, Inverted}
Allows the user to invert the data.
{Voice, 64Kbit}
Available with 96 Kbps (IDR) Framing.
{Normal, Swapped}
Available in BPSK Modulation.
{Enable Disable}
Allows the user to enable or disable the Reed-Solomon
Encoder.
{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.
{4, 8}
Displays the currently used Reed-Solomon Interleaver
Depth. In Closed Net Mode, a depth of 4 or 8 may be
selected.
{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:
Framing Type:
Scrambler Type:
Spectrum Mask:
IBS Mode:
(IESS-308)
Data Rates:
Framing Type:
Scrambler Type:
Spectrum Mask:
1.544, 2.048 (Mbps)
96 Kbps (IDR)
V.35 - IESS
Intelsat
1.544, 2.048 (Mbps)
1/15 (IBS)
IBS
Intelsat
TM065 – Rev. 3.3
Advertisement
Table of Contents
