TECHNICAL NOTE – OPERATION OF MT4000 TWTA
10/24/03
TN4000-3
MCL, INC.
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3.2.10 Coupling Factor Screen
On this screen the operator can edit or view the frequency and coupling factor for up to eight
frequencies for the TWTA output sample port. These coupling factors are a convenience for the
operator and are not used in any calculations within the TWTA logic. This screen is accessed
from the menu screen. When the screen shown at the top of the figure below is displayed the
operator can select which line to modify from those listed on this menu. Though there are eight
menu lines to select, the screen can only display four at a time. By rotating the knob CW these
selections will scroll up one at a time, and CCW down one at a time. Once the cursor is pointing
at the desired selection the operator will press the Accept button. This will cause the edit screen
for the selected line to be displayed (see the next paragraph). If the operator were to press the
menu select button from this screen the menu screen would be displayed again.
3.2.11 Coupling Factor Edit Line Screen
This screen is accessed from the coupling factor screen. When the screen shown in the middle of
the figure above is displayed the operator can select the frequency or the coupling factor to edit.
By rotating the knob the cursor will alternate between the two parameters. Once the cursor is
pointing at the desired selection the operator will press the Accept button, this will cause the Edit
Parameter screen to be displayed (see the next paragraph). If the operator were to press the menu
select button from this screen the coupling factor screen would be displayed again.
