Demodulator Menu Options And Parameters - Radyne DMD20 Installation And Operation Manual

DMD20 Universal Satellite Modem
REED-SOLOMON (menu)
RS ENABLE/DISABLE
RS RATE
RS INTERLVR DEPTH

4.3.3 Demodulator Menu Options and Parameters

MODE
TM103 – Rev. 1.1
These selections are visible only when the Reed-
Solomon Option is installed.
{ENABLED, DISABLED}
Allows the user to Enable/Disable the Reed-Solomon
Encoder.
{Refer to Table 3-1 for valid n/k values}
Displays the currently used n, k Reed-Solomon Codes.
In Closed Net Mode, the user may select custom R-S
Codes.
{4, 8}
Allows the user to select the Reed-Solomon interleaver
depth. In Closed Net Mode, a depth of 4 or 8 may be
selected.
{IDR, IBS, DROP & INSERT, CLOSED NET}
Used with IDR, or IBS Interface Only.
The Mode Command 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 and cannot be
changed while the unit is in the given mode of operation:
IDR Mode:
(IESS-308)
For Data rates 1.544, 2.048, 6.312, 8.448 Mbps
Framing Type:
Descrambler type:
Spectrum Mask:
For Data Rates < 1.544 Mbps
Framing Type:
Descrambler Type:
Spectrum Mask:
IBS Mode:
(IESS-309)
For Data Rates < 2.048 Mbps
Framing Type:
Descrambler Type:
Spectrum Mask:
User Interfaces
96 Kbps (IDR)
V.35
Intelsat
1/15 (IBS)
IESS-309
Intelsat
1/15 (IBS)
IESS-309
Intelsat
4-7