5 reed-solomon (menu) – Comtech EF Data DMD-2050E User Manual
Page 129

DMD2050E Universal Satellite Modem
User Interfaces
MN-DMD2050E Revision 2
4–17
DATA MENU
SCRAMBLER SEL
{NONE, V.35-IESS, V.35 CITT, V.35 EF, IBS
w/Optional Framing and optional Reed-
Solomon, Reed-Solomon Scrambler
w/Optional Framing, CCITT, V.35FC, OM-73,
V.35EF_RS, TPC SCRAMBLER (Turbo
Codec), DVB, EDMAC, EBEM}
Select the descrambler type.
SCRAMBLER CTRL {ENABLED, DISABLE}
Enable or disable the descrambler
operation.
SAT FRAMING
{1/15 (IBS), 1/15 (Async), 96 Kbps (IDR),
EDMAC, EFAUPC, SCC, EBEM, None}
Select the Framing Type.
TERR FRAMING
{NONE, 188, 204}
DVB Only
DATA POLARITY
{INV. TERR & BASE, INV. BASEBAND,
INV.TERR DATA, NONE}
Invert the Rx Data polarity.
SYMBOL PAIR
{NONE, SWAPPED}
BPSK Mode Only
Swap the I & Q Channels.
ESC OVERHEAD
{VOICE X2, DATA 64KBPS}
IDR ESC Channel is used for Voice or 64
K data channel.
See also:
4.4.1.4.1 EBEM NETWORK SPEC Parameters
4.4.1.4.2 SCC FRAMING Parameters
4.4.2.5
REED-SOLOMON (menu)
IMPORTANT
When the Reed-Solomon option is installed, these parameters are available.
ENABLE/DISABLE
{ENABLED, DISABLE}
Enable or disable the Reed-Solomon decoder.
RS RATE
{Refer to Table 3-1 for valid
n/k values}
Displays the currently used n, k Reed-Solomon Codes. In
Closed Net Mode, you can select custom R-S Codes.
INTERLVR DEPTH
{4, 8, 12}
Select the Reed-Solomon interleaver depth. In Closed Net
Mode, you can select a depth of 4 or 8.