Comtech EF Data SNM-1001L - Manual (Page 28)

SNM-1001L Satellite Modem Revision 1
Introduction MN/SNM1001L.IOM
1–4
1.4 FAST Accessible Options
Comtech EF Data FAST system allows immediate implementation of different options
through the user interface keypad. Some FAST options are available through the basic
platform unit, while others require that the unit be equipped with optional hardware or
that the hardware be installed in the field. Refer to Table 1-1 for a listing of possible
configurations.
The options available through the FAST architecture include:
• Single Data Rate • BUC FSK: DiSEQ
• Low Variable Data Rate
(up to 512 kbps) • OQPSK
• High Variable Data Rate
(up to 4.375 Mbps) • 8-PSK
• Sequential Decoder
• Viterbi Decoder
• Asymmetrical Loop Timing
• Offset QPSK
• Reed-Solomon COdec *
• AUPC
• Turbo Codec
* Optional hardware required.
Table 1-1. FAST Options and Required Configurations
Hardware
Single Data rate Low Variable Data Rate High Variable Data Rate Sequential Decoder Viterbi Decoder Asymmetrical Loop Timing BUC FSK: DiSEQ Offset QPSK 8-PSK Reed-Solomon Codec (See Note 2) AUPC Turbo Codec (See Note 2)
Basic Platform
SNM-1001L X X
(Note 1) X
(Note 1) X
FAST Option X X X X X X X
FAST Option with
Reed-Solomon X X
Option with Turbo
Hardware X
Notes:
1. The basic modem is shipped with either Sequential or Viterbi decoder.
2. Either Reed-Solomon or Turbo Codec is installed, not both.