Table 3-9. Efd Closed Network Parameter Settings - Comtech EF Data SLM-3650 Installation And Operation Manual

SLM-3650 Satellite Modem
Operation

Table 3-9. EFD Closed Network Parameter Settings

Parameter
Modem Type
TX Data/Code Rate
TX IF Output
RX Data/Code Rate
TX Clock Source
Buffer Clock Source
Modulator Type
Encoder Type
Demodulator Type
Decoder Type
TX Overhead Type
RX Overhead Type
Interface Type
Buffer Program
RTS TX IF Cntrl
CTS Delay
Note: To use G.703, the modem must have the required G.703 Overhead board installed.
3.5.1.6 Custom Operation
Note: If the modem serves as the backup unit for a rack of modems having different
hardware and FAST options, then the backup modem shall have all of the features and
hardware found in the other modems.
Operating in Custom mode allows access to all front panel menus, including the Utility
menus. The Custom operation mode is mainly used when the modem must function with
no overhead in an open network application. For example, to use the modem in the IDR
mode of operation with overhead (308-2), the following steps are taken:
1. Select the IDR modem type, so that the modem loads the IDR default parameter.
2. Select the Custom modem type, which allows Access to the modulator and
demodulator overhead type.
3. Select NONE for the overhead types.
A protection switch can make use of the Custom operation mode when the modem is
configured as a backup modem. Because the backup modem is operating in Custom
Mode, the switch can program all the backup modems parameters. Thus, the one backup
modem can be made compatible with all of the various application types found in the
rack.
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Front Panel Setting
EFD
TX-V, QPSK 1/2
ON
RX-V, QPSK 1/2
TX Terrestrial
Satellite Clock
EFD Closed (All modulator types are
accessible)
Viterbi, Sequential or Turbo
EFD Closed (All modulator types are
accessible)
Viterbi, Sequential or Turbo
None
None
EIA-422, EIA-232, V.35, G.703 (see note)
Bits or Milliseconds
OFF or ON
0 Seconds
3–84
MN/SLM3650.IOM
Reference Menu
Utility: Modem Type
Configuration : Modulator
Configuration: Modulator
Configuration: Demodulator
Configuration: Interface
Configuration: Interface
Utility: Modulator
Utility: Modulator
Utility: Demodulator
Utility: Demodulator
Utility: Interface
Utility: Interface
Utility: Interface
Utility: Interface
Utility: Interface
Utility: Interface
Revision 3