Comtech EF Data RCF6001 - Manual (Page 31)

RCF6001 Satellite Terminal Maintenance
TM082 - Rev. 1.0 Page 4-11
The front panel has seven top level menus as follows: Modulator, Demodulator, Interface, Monitor,
Alarms, System, and Test. The menu items are shown in the tables below:
The following table is a listing of the Command and Status parameters available to the user from the
front panel of the DMD2401 LB/ST. A brief description of each of the items follows. By using the
following descriptions and the previous Figures, the user should become familiar rather quickly with the
hierarchical structure of the DMD2401 LB/ST command and status parameters available at the front
panel of the modem.
Modulator
Mod IF/RF
NOTE: The LO frequencies of the Block Upconverter (BUC) and LNB must be entered first under
the ‘System/General/BUC LO/LNB LO’ menus. The LB/ST will then calculate the Mod and Demod
IF/RF frequencies.
Tx RF
This Frequency is precalculated by the LB/ST after the operator has
entered the LO frequencies of the BUC and LNB under the
System/General menu.
Tx IF
Enter in 1 MHz steps from 950-1525 MHz.
Power
Tx Power level is entered in dBm from -5 to -30 dBm.
Carrier
Turns carrier On & Off
Spectrum Inv
Inverts the direction of rotation for PSK modulation.
Normal meets the IESS specification
Modulation
Sets modulation type QPSK, BPSK, OQPSK
Mod Data
Data Rate
Sets Data Rate in BPS Steps. Use arrows or Keypad.
Conv Enc
Selects Tx code rate and type
Diff Encode
Enables or disables differential encoder
Scrmbl Sel
Selects scrambler type (V.35-IESS)
Scrmbl Ctrl
Enables or disables scrambler operation
Data Invert
Sets data polarity to Normal, Inverted, or Auto.
Reed-Solomon
Enable/Disable the Reed-Solomon Encoder
ModRS Codes
Displays the currently used n, k Reed-Solomon Codes. Custom RS
codes may be selected.
ModRS Depth
Displays the currently used Reed-Solomon interleaver depth. In Closed
Net Mode, Depth = 8 or 4 may be selected.
Demodulator
Demod IF/RF