Nautel NX15, Operation And Maintenance Manual

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NX15/NX25 Operations and Maintenance Manual Operating the transmitter
Issue 6.0 2019-01-31 Page 2-35
AM-AM and AM-PM correction screens.
The exciter linearizes the transmitter’s magnitude
(envelope) path and drive signal by using two correction parameters -
AM-AM Correction
(see
Figure 2.20 ) and
AM-PM Correction
(see Figure 2.21 on page 2-37 ), which can be viewed as tool
menu panels.
Figure 2.20: AM-AM Correction
AM-AM correction.
This panel displays the amplitude correction being applied to the
magnitude signal. The x-axis represents the signal amplitude and the y-axis represents the gain
correction applied for a given amplitude value.
Touch on the panel to display a cursor in the approximate area on the trace. The cursor
position (LUT index and gain) is noted in the upper, right-hand corner of the panel. Touch in
other areas of the tool menu panel to provide a coarse adjustment of the cursor position.
Use the left and right buttons to make fine adjustments.
Use the up or down button to maximize (if it was minimized) or minimize (if it was
maximized) the panel size.