Specifications

DMD20/20LBST Universal Satellite Modem User Interfaces
MN-DMD20-20LBST Revision 14 4–9
IN-BAND RATE {150, 300, 600, 1200, 2400, 4800, 9600, 19200}
Allows the user to select the rate of in-band data for the ES to
ES, Async overhead channel.
Only displayed when Efficient D&I with Enhanced Async are
selected.
SCC CTL RATIO {1/1, 1/2, 1/3, 1/4, 1/5, 1/6, 1/7},
Allows the user to simulate the framing used by the Satellite
Control Channel Option (Pass Thru Mode only). The SCC CTL
RATIO is the ratio of overhead in-band data to synchronizing
words.
Only displayed when SCC Framing is selected
SCC INBAND RATE {300 to 115200}, when using SCC Framing
Allows the user to request the rate of in-band data for the
overhead channel.
Only displayed when SCC Framing is selected
TERR FRAMING {NONE, 188, 204}, when using DVB Network Specifications
DATA POLARITY {INV. TERR & BASE, INV. BASEBAND, INV.TERR DATA,
NONE}
Use DATA POLARITY to invert the Tx Data polarity if necessary.
If other brands of equipment are used with this unit, data polarity
inversion may be required.
BPSK SYMB PAIR {NORMAL, SWAPPED}
Allows the user to swap the I & Q Channels, when using BPSK
modulation.
ESC OVERHEAD {VOICE X2, DATA 64KBPS}
IDR ESC Channel used for Voice or 64 K data channel. Only
available when IDR Network is selected.
REED-SOLOMON (menu) These selections are visible only when the Reed-Solomon
Option is installed.
ENABLE/DISABLE {ENABLED, DISABLE}
Allows the user to Enable/Disable the Reed-Solomon Encoder.
RS RATE {Refer to Table 3-1 for standard n/k values}
Displays the currently used n, k Reed-Solomon Codes. In
Closed Net Mode and using the appropriate hardware, the user
may select custom R-S Codes.
INTERLVR DEPTH {4, 8, 12}
Allows the user to select the Reed-Solomon interleaver depth. In
Closed Net Mode, a depth of 4 or 8 may be selected.
ODU-BUC (menu)
FSK COMMS {OFF-NONE/CODAN/TERRASAT/AMPLUS}
(Only available when the FSK Comm is Enabled)
OFF/NONE:
Will disable the FSK Communication link. User must select this