3 utility:modulator:power up tx-if, 4 utility:modulator:modulator type – Comtech EF Data SDM-2020 User 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 <ENTER> 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 <ENTER> to turn OFF the TX-IF Output.
2
Press [ENTER] a second time to turn ON the TX-IF OUTPUT.