Comtech EF Data SDM-9000 - Manual (Page 80)

Operation SDM-9000 Satellite Modem
4–6 Rev. 4
SDM-9000 "TYPE"
VER: 6.1.1
FUNCTION SELECT
CONFIGURATION
CONFIGURATION
MODULATOR
TX-X CODE_RATE TX-IF FREQUENCY TX-IF OUTPUT TX POWER LEVEL
DIFF. ENCODER
CARRIER MODE
(TEST MODE
CONFIGURATION)
x = FILTER A, B, C, or D
See table below for code rate
and data rate range.
70.000 MHz
50 to 180 MHz
in 2.5 kHz steps.
ON
OFF
+5 to -20 dBm (no offset)
or
-5.0 to -30.0 dBm
(offset,
fixed user, total range)
ON
OFF
NORMAL (OFF)
CENTER
OFFSET
DUAL
MODULATOR REF
INTERNAL
EXT 5 MHz
EXT 10 MHz
EXT 20 MHz
Modulator high stability
reference option only.
RS ENCODER
ON
OFF
Reed-Solomon option only.
ACCESS TO
SUBMENU
CONDITIONAL OR
OPTION-DEPENDENT
Parameter Information
Key:
Code Rate G.703 ECL/PECL MIL-STD-188
(Mbit/s) (Mbit/s) (Mbit/s)
QPSK 1/2 8.448, 32.064, 34.368 6.000 to 37.000 All code rates:
QPSK 3/4 All other All other 6.000 to 13.000
QPSK 7/8 code rates: code rates:
8PSK 2/3 32.064, 34.368 6.000 to 51.840
8PSK 5/6 44.736, 51.840
16QAM 3/4
16QAM 7/8
Figure 4-3. Configuration Modulator Menu