Comtech EF Data SDM-2020 - Manual (Page 68)

SDM-2020 Satellite Modulator Revision 7
Front Panel Operation MN/SDM2020M.IOM
5-26
5.6.7.3 UTILITY:MODULATOR:POWER UP TX-IF
POWER UP TX-IF
LAST KNOWN
Use this menu to select the state of the TX-IF Output at power up. Selections include
OFF and LAST KNOWN (last known state). Upon entry, the current status of the TX-IF
Output power up state is displayed.
1 Press [ ↑] or [↓] to make the selection.
2 Press to execute the change.
5.6.7.4 UTILITY:MODULATOR:MODULATOR TYPE
MODULATOR TYPE
DVB-1
Use this menu to select a spectral mask type of DVB-1 or DVB-2:
DVB-1 This is the default mask and is the “best fit” to the ETS 300 421 mask.
DVB-2 This mask has a sharper cutoff in the transition region from 3 to 40 dB
resulting in a narrower spectrum, than DVB-1, at the 35 dB down region.
1 While in this menu, press to turn OFF the TX-IF Output.
2 Press [ENTER] a second time to turn ON the TX-IF OUTPUT.