Comtech EF Data DMD-2050E - Manual (Page 118)

DMD2050E Universal Satellite Modem User Interfaces
MN-DMD2050E Revision 2 4–6
4.4.1.2 STRAP CODE
The STRAP CODE is another means for quickly setting several parameters at one time. STRAP
CODE parameters include:
• Data Rate • Inner Code Rate
• Satellite Framing • Scrambler
• Drop and Insert • Outer Code Rate (Reed-Solomon)
• Modulation • Network Spec
See Appendix I, Strap Codes for more data.
4.4.1.3 IF (menu)
IF MENU
FREQUENCY (MHz) {50 – 90 MHz, 100 – 180 MHz, or 950
- 2050 MHz}
Enter the Modulator IF Output Frequency of the
modem in 1 Hz increments.
POWER (dBm) {0 to -45 dBm} Enter the Transmitter Power Level.
CARRIER {ON, OFF, AUTO, VSAT, RTS} Select the carrier type.
SPECTRUM {NORMAL, INVERTED} Invert the direction of rotation for PSK Modulation.
Normal meets the IESS Specification.
MODULATION {BPSK, QPSK, OQPSK, 8PSK,
8QAM, 16APSK, 16QAM} Select the modulation type.
SPECTRAL MASK {MIL-188-165A, INTELSAT 0.35, DVB
SAT 0.35, DVB SAT 0.25} Set the spectral shape of Tx Data Filter.
COMPENSATION {0 to 1 dB} Set the offset on the transmit output power (allows
for some specific cable loss up to 1dB).
4.4.1.4 DATA (menu)
DATA MENU
DATA RATE (bps)
See Chapter 7 Technical
Specifications Set the Data Rate in bps steps via the Front Panel
Arrows or Keypad.
SYMB RATE (sps) View the Symbol Rate.
Set the symbol rate (ITA Mode ONLY)
INNER FEC Viterbi {1/2, 3/4, 7/8, None}
Optional FEC Rates:
Sequential {1/2, 3/4, 7/8}
CSC {3/4}