Comtech EF Data SDM-2020 - Manual (Page 67)

SDM-2020 Satellite Modulator Revision 7
Front Panel Operation MN/SDM2020M.IOM
5-25
5.6.7 FUNCTION SELECT:UTILITY
CAUTION
The Utility Factory Setup menu is for Comtech EF Data service
personnel only. Unauthorized access may cause the modulator to
operate incorrectly.
Changes in the Utility menu may cause changes in other front panel
menus.
The Function Select Utility menu is divided into the following categories:
• Modulator
• Interface
• System
• Options
• Factory Setup - (Factory Use Only)
1 Press [ ←] or [→] to select the desired Utility menu.
2 Press [ENTER].
3 Press [ ←] or [→] to select the desired function.
5.6.7.1 UTILITY:MODULATOR:MOD POWER OFFSET
MOD POWER OFFSET
+ 0.0 dB
Use this menu to “offset” the modulator output power readout in the Configuration menu.
This feature does not actually change the modulator power level. The function is to
change the actual reading to display an offset value in the monitor.
The modulator Power Offset can be set from –40.0 to +40.0 dB, in 0.1 dB increments.
Any value except 0.0 dB causes (ADJ) to be displayed in the TX Power Level screen.
5.6.7.2 UTILITY:MODULATOR:MOD SPECTRUM
MOD SPECTRUM
NORMAL
Use this menu to select NORMAL or INVERT for spectrum reversal of the I and Q
baseband channels (programmable vector rotation).