Comtech EF Data SDM-100A - Manual (Page 192)

Options SDM-100A Satellite Modem
B–10 Rev. 0
B.1.3.2 Modulation Configuration
TX Rate and Type This option allows the user to chose from a 9.6 to 224 kHz mode of
operation with the ASYNC overhead enabled. BPSK 1/2, QPSK 1/2,
3/4, and 7/8 are also supported. With the ASYNC set to OFF, this
option works in the standard SDM-100A mode.
B.1.3.3 Demodulation
RX Rate and Type This option allows the user to chose from a 9.6 to 224 kHz mode of
operation with the ASYNC overhead enabled. BPSK 1/2, QPSK 1/2,
3/4, and 7/8 are also supported. With the ASYNC set to OFF, this
option works in the standard SDM-100A mode.
B.1.3.4 Utility/Interface
Remote AUPC This option turns the AUPC mode on the remote modem on or off.
Remote Baseband
Loopback This option sets the remote modem into the baseband loopback
mode.
Terrestrial This option selects the interface type for the terrestrial data.
ASYNC This option selects the interface type for the ASYNC data.
2-Wire/4-Wire This option programs the ASYNC interface for either a 2- or 4-wire
interface.
SD Invert/Normal This option inverts the polarity of the SD signal.
RD Invert/Normal This option inverts the polarity of the RD signal.
RR Invert/Normal This option inverts the polarity of the RR signal.
DM Invert/Normal This option inverts the polarity of the DM signal.
RS Invert/Normal This option inverts the polarity of the RS signal.
CS Invert/Normal This option inverts the polarity of the CS signal.
MC Invert/Normal This option inverts the polarity of the MC signal.
RT Invert/Normal This option inverts the polarity of the RT signal.
ST Invert/Normal This option inverts the polarity of the ST signal.