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Set the signal generator carrier frequency for the pulsed RF using the
NNNNNNNNNNNNNN
menu and
NNNNNNNNNNNNNNNNNNNNNNN
.
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Set the power level required at the peak of the main lobe of the scan using the
NNNNNNNNNNNNNNNNN
menu and
.
Select the
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softkey to enable internal leveling.
If the RF output is currently turned o , press the
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softkey to turn it on.
Choose external pulse modulation (or a type of internal pulse modulation if your
instrument has Option 1E2), and set the pulse characteristics as required for your
particular application.
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NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNN
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
Select
NNNNNNNNNNNNNNNNNNNNNNN
and then
NNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNNN
to turn logarithmic amplitude modulation on.
If FM is turned on, select the
NNNNNNNNNNNNNNNNNNNNNNNNNNNNN
softkey to turn it o .
Set the arbitrary waveform generator or variable voltage source to produce a waveform
with amplitude characteristics that achieve an antenna scan with the desired dynamic
range.
EXT AM
EXT AM
RF OUTPUT
Figure 3-15. Example Antenna Scan Input
Generating Signals
3-33
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