Comtech EF Data SDM-300A, Инструкция по установке и эксплуатации

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Options SDM-300A Satellite Modem
A–2 Rev. 4
A.1 FAST Accessible Options
Comtech EFData’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
H A R D W A R E
B a sic P la tfo rm X
X X X X X X
X
X X X X
X (N o te 2 )
X (N o te 2 )
X (N o te 2 )
X (N o te 2 )
X
(N o te 1 )
X
(N o te 1 )
X
(N o te 1 )
X
(N o te 1 )
X
(N o te 1 )
FA S T O p tio n s
F a s t O p tio n s w ith
R e e d -S o lo m o n H a rd w a re
M u x
F le x M u x
F a s t O p tio n s w ith
O v e rh e a d H a rd w a re
F a s t O p tio n s w ith
R e e d -S o lo m o n a n d
O v e rh e a d H a rd w a re
S
ingl
e D
a
ta
R
a
te
Low
V
a
ri
a
b
le
Da
ta
Ra
te
(up t
o
512
k
b
it
/s
)
H
igh V
a
ri
abl
e
Da
ta
Ra
te
(up t
o
4.
375 M
b
it
/s
)
S
equen
ti
al
D
e
code
r
Vi
te
rb
i
D
e
code
r
As
y
m
m
e
tr
ic
a
l
Loop
t
im
ing
8P
SK
R
eed-
Sol
o
m
o
n
C
odec
AS
Y
NC/
A
U
P
C
O
v
er
head
O
p
en N
e
tw
o
rk
(I
D
R
/I
B
S
)
D
ro
p
and
In
ser
t
4-
C
hannel
A
S
YN
C
SY
N
C
o
r
AS
Y
NC/
S
Y
NC
8-
C
hannel
A
S
YN
C
SY
N
C
o
r
AS
Y
NC/
S
Y
NC
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.