SLM-3650 Satellite Modem
Revision 3
Options
MN/SLM3650.IOM
A–2
A.1 FAST
Accessible
Options
Comtech EF Data’s 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 A-1 for a listing of possible
configurations.
The options available through the FAST architecture include:
•
Drop and Insert (D&I)
•
IBS
•
ASYNC/AUPC
•
Asymmetrical loop timing
•
Decoder
•
G.703 operation
•
IDR
•
Variable data rates
Other options are available through conventional changes such as installing daughter card
PCBs. Refer to Section A.2, Conventional Options, for additional information.
Table A-1. FAST Options and Required Configurations
Hardware
Single
Da
ta
Ra
te
Low Variable
Da
ta
Ra
te
(up t
o 512 kbps)
High Variable
Da
ta
Ra
te
(up t
o 4.
375
Mbps)
Sequent
ial
Decoder
Vit
erbi Decoder
Asymmetrical
Loop Timing
8PSK
Reed–Solomon
Codec
Turbo Codec
ASYNC/AUPC
Overhead
Open Net
w
ork
(IDR/IBS
)
Drop & I
nsert
Eurocomm
In
te
rfa
ce
G.
703 I
nt
erf
ace
4-Channel
ASYNC
SYNC
8-Channel
ASYNC
SYNC
Basic Platform
z
z
1
z
1
FAST Options
z
z
z
z
z
z
FAST Options with
Reed-Solomon
Hardware
z
5
FAST Options with
Turbo Hardware
z
5
FAST Options with
Overhead Hardware
z
2
z
2
z
2
z
2, 3
z
2, 4
FAST Options with
Reed-Solomon And
Overhead Hardware
z
z
z
z
Mux
z
2
z
2
Flex Mux
z
2
z
2
Notes:
1. The basic modem is shipped with either Sequential or Viterbi decoder.
2. The overhead interface card and a compatible relay adapter card (connector personality card) are required
for this option. Refer to Chapter 1 for the applicable part numbers.
3. Requires Eurocom Interface module.
4. Requires G.703 Interface module and OH card.
5. Select either Reed-Solomon or Turbo.
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