Fast system theory, Implementation, A.1.1 fast system theory – Comtech EF Data C5 User Manual
Page 246: A.1.2 implementation
Options
C5/K1/K3 Integrated Satellite Terminal System
A–2
Rev. 0
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
Data
Rate
Variable
Data Rate
(up to
512 kbit/s)
Variable
Data Rate
(up to
4.375 Mbit/s)
Sequential
Decoder
Viterbi
Decoder
Async
Loop
Timing
Reed-
Solomon
Codec
ASYNC/
AUPC
Overhead
Base SDT-5200
X
FAST Options to the Base
SDT-5200
N/A
X
X
X
X
X
N/A
N/A
FAST Options with
Reed-Solomon Hardware
N/A
N/A
N/A
N/A
N/A
N/A
X
N/A
FAST Options with Overhead
Hardware
N/A
N/A
N/A
N/A
N/A
N/A
N/A
X
Note: The basic SDT-5200 is shipped with either Sequential or Viterbi decoder.
A.1.1
FAST System Theory
FAST is an enhancement feature available only in EFData products, enabling on-location
upgrade of the operating feature set—in the rack—without removing a modem from the
setup. When service requirements change, the operator can upgrade the topology of the
modem to meet those requirements within minutes after confirmation by EFData. This
accelerated upgrade can be accomplished only because of FAST’s extensive use of
programmable devices incorporating EFData-proprietary signal processing techniques.
These techniques allow the use of a unique access code to enable configuration of the
available hardware. The access code can be purchased at any time from EFData. Once
obtained, the access code is loaded into the unit through the front panel keyboard or the
rear remote port.
With the exclusive FAST technology, operators have maximum flexibility for enabling
functions as they are required. FAST allows an operator to order a modem precisely
tailored for the initial application, reducing risk and cost overruns during the application
integration process.
A.1.2 Implementation
FAST is factory-implemented in the modem at the time of order. Hardware options for
basic modems can be ordered and installed either at the factory or in the field. The
operator can select options that can be activated easily in the field, depending on the
current hardware configuration of the modem.