Comtech EF Data C5 - Manual (Page 195)

C5/K1/K3 Integrated Satellite Terminal System Operation
Rev. 0 4–69
Table 4-2. EFD Closed Network Parameter Settings
Parameter Front Panel Setting Reference Menu
Modem Type EFD Utility Modem Type
TX Data/Code Rate TX-V, QPSK 1/2 Configuration Modulator
TX-IF Output ON Configuration Modulator
RX Data/Code Rate RX-V, QPSK 1/2 Configuration Demodulator
TX Clock Source TX Terrestrial Configuration Interface
Buffer Clock Source Satellite Clock Configuration Interface
Modulator Type EFD Closed (All modulator types are accessible) Utility Modulator
Encoder Type Viterbi or Sequential Utility Modulator
Demodulator type EFD Closed (All modulator types are accessible) Utility Demodulator
Decoder Type Viterbi or Sequential Utility Demodulator
TX Overhead Type None Utility Interface
RX Overhead Type None Utility Interface
Interface Type EIA-422, EIA-232, or V.35 Utility Interface
Buffer Program Bits or Milliseconds Utility Interface
RTS TX-IF Cntrl OFF or ON Utility Interface
CTS Delay 0 Seconds Utility Interface
4.2.1.2 Custom Operation
Note: If the IDU serves as the backup unit for a rack of modems having different
hardware and FAST options, then the backup modem should have all of the features and
hardware found in the other modems.
Operating in Custom mode allows access to all front panels menus, including the Utility
menus. The Custom operation mode is manly used when the modem must function with
no overhead in an open network application.
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 modem parameters. Thus, the one backup
modem can be made compatible with all of the various application types found in the
rack.
Refer to Appendix A for more information on Custom theory of operation.