Options; Reed-Solomon Codec; 8Psk/16Qam - Comtech EF Data SDM-9000 Installation And Operation Manual

Introduction

1.1.3 Options

1.1.3.1 Reed-Solomon Codec

The Reed-Solomon Codec works in conjunction with the Viterbi decoder, and includes
additional framing, interleaving, and Codec.
This option can be factory or user installed. Refer to the following table for modem
compatibility requirements.
Interface PCB
Display/M&C PCB
Modulator PCB
Demodulator PCB
Reed-Solomon Codec PCB
Reed-Solomon Daughter
Board (DVB Standard)
Refer to Appendix A for more information.

1.1.3.2 8PSK/16QAM

The 8PSK modulation type is a PSK encoding method for providing a modulated carrier
at 6.0 to 51.84 Mbit/s by pragmatic trellis encoding at 2/3 and 5/6 code rates. This option
is installed at the factory.
The 16QAM is an encoding method for providing a modulated carrier at 6.0 to
51.84 Mbit/s in 3/4 and 7/8 rates.
Interface PCB
Display/M&C PCB
Modulator PCB
Demodulator PCB
Reed-Solomon Codec PCB
Note: The Reed-Solomon option is required for 8PSK/16QAM operation.
1–6
Type 2 or 3 (or greater)
AS/3971-2
AS/3971-3
AS/2305 Rev. C4 (or greater)
AS/3969
AS/3970
AS/4080
AS/4524
Type 2 and 3 (or greater)
AS/3971-2
AS/3971-3
AS/2305 Rev. C4 (or greater)
AS/3969-1, -2, -5, and -6
AS/3970-1 and -2
AS/4080
SDM-9000 Satellite Modem
Rev. 4