Specifications

DMD20/20LBST Universal Satellite Modem User Interfaces
MN-DMD20-20LBST Revision 14 4–46
IF: IF loopback loops the IF output of the Modulator to the IF
input of the Demodulator. If using 8PSK or 16QAM Modulation,
the output power must be above -15 dB.
TERR TX/RX: Enables both. Baseband loopback is performed
at interface between the Baseband Processor Card and the
Modem Card. This ensures Framer/Deframer integrity.
BASEBAND TX/RX: Enables both Baseband Tx and Baseband
Rx.
NONE: No loopback performed.
TERR RX: (Distant Loop) Sends received satellite data to the
Modulator for transmission to the distant end.
BASEBAND RX: Sends Rx data from the Modem Card to the
Tx data input to the Modem Card.
TERR TX: Sends Tx Terrestrial Data to Rx data out.
BASEBAND TX: Sends Tx data to the receive input to the BB
Card.
CARRIER TYPE {NORMAL, CW, DUAL, OFFSET, POS FIR, NEG FIR}
Allows the user to set the type of carrier.
NORMAL: Causes the Modulator to output normal modulation.
CW: Causes the Modulator to output a pure carrier.
DUAL: Causes a double sideband output.
OFFSET: Causes a single sideband output.
POS FIR: For manufacturer’s use only.
NEG FIR: For manufacturer’s use only.
IQ SAMPLING {ENABLE/DISABLE}
Allows the user to enable the I & Q pattern on the Web Browser
Interface.
IQ SPCTRM SMPLING {ENABLE, DISABLE}
Allows the user to enable the Frequency Spectrum pattern on
the Web Browser.
ICMP PING Used to ping the Router