Comtech EF Data CDM-740 - Manual (Page 104)

CDM-740 Advanced Satellite Modem Revision 0
Ethernet Management MN-CDM740
6–20
6.5.4.6 MOD (Modulator) Page
Figure 6-11. Modulator page
The ‘MOD’ page (Figure 6-11) permits the user to configure CDM-740 modulator operations.
Note that, for any configuration item requiring text entry, a reference to the operational ranges for
that field is provided to the right of that text box.
Modulator Section
Tx Freq (MHz)
Enter the modem’s Tx frequency, in MHz. The valid ranges are from 50 – 180 MHz (70/140 MHz)
and 950 – 2150 MHz (L-Band).
Tx Interface Type
Presently, IP is the sole available Tx Interface type.
Tx FEC Type
Presently, TPC (Turbo Product Codec) is the sole available FEC type.
Tx Modulation Type
Use the dropdown menu to select QPSK, 8-QAM, or 16-QAM.